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searching for Geologic record 173 found (295 total)

Tephra (1,932 words) [view diff] exact match in snippet view article find links to article

time, sedimentation occurs incorporating these tephra layers into the geologic record. Tephrochronology is a geochronological technique that uses discrete

First appearance datum (402 words) [view diff] exact match in snippet view article find links to article

paleontologists to designate the first appearance of a species in the geologic record. FADs are determined by identifying the geologically oldest fossil

Gravel (2,103 words) [view diff] exact match in snippet view article find links to article

Alluvial fans likely contain the largest accumulations of gravel in the geologic record. These include conglomerates of the Triassic basins of eastern North

Aeolian processes (6,008 words) [view diff] exact match in snippet view article find links to article

areas of limited sand availability, they are poorly preserved in the geologic record. Where sand is more abundant, transverse dunes take the form of aklé

Conglomerate (geology) (1,817 words) [view diff] exact match in snippet view article

fans and likely contain the largest accumulations of gravel in the geologic record. Conglomerates may be named and classified by the: Amount and type

Neoproterozoic (1,127 words) [view diff] exact match in snippet view article find links to article

Era of the Phanerozoic Eon. The most severe glaciation known in the geologic record occurred during the Cryogenian, when ice sheets may have reached the

Volcaniclastics (904 words) [view diff] exact match in snippet view article find links to article

may have contributed as much as a third of all sedimentation in the geologic record. Volcaniclastics are composed of a range of pyroclastic detritus mixed

Fulgurite (2,112 words) [view diff] no match in snippet view article find links to article

Fulgurites (from Latin fulgur 'lightning', and -ite), commonly called "fossilized lightning", are natural tubes, clumps, or masses of sintered, vitrified

Principles of Geology (1,546 words) [view diff] exact match in snippet view article find links to article

disappearance in the geologic record for the area, which is now known as mass extinction. Cuvier explained these sudden changes in the geologic record with catastrophic

Volcanic dam (1,359 words) [view diff] exact match in snippet view article find links to article

and active volcanic provinces, and are known to have existed in the geologic record, in historic times and occur in the present day. Their removal or failure

Dolomite (rock) (3,404 words) [view diff] exact match in snippet view article

problem" refers to the vast worldwide depositions of dolomite in the past geologic record in contrast to the limited amounts of dolomite formed in modern times

Mudrock (3,243 words) [view diff] exact match in snippet view article find links to article

classification scheme. Mudrocks make up 50% of the sedimentary rocks in the geologic record and are easily the most widespread deposits on Earth. Fine sediment

Carbonatite (2,085 words) [view diff] exact match in snippet view article find links to article

easily weathered and are therefore unlikely to be preserved in the geologic record. Carbonatite eruptions as lava may therefore not be as uncommon as

Siberian Traps (2,618 words) [view diff] exact match in snippet view article find links to article

Permian–Triassic extinction event, the most severe extinction event in the geologic record. Subsequent periods of Siberian Traps activity have been linked to

Calabozos (3,133 words) [view diff] no match in snippet view article find links to article

Calabozos is a Holocene caldera in central Chile's Maule Region (7th Region). Part of the Chilean Andes' volcanic segment, it is considered a member of

Paleontology in Illinois (2,199 words) [view diff] exact match in snippet view article find links to article

often of very high preservational quality. There is a gap in Illinois' geologic record from the Mesozoic to the Pleistocene. During the Ice Age, Illinois

Aragonite sea (1,066 words) [view diff] exact match in snippet view article find links to article

derivatives of ancient seawater trapped in halite crystals in the geologic record (fluid inclusions). Wilkinson, Owen & Carroll 1985 Wilkinson & Given

Paleontology in Kentucky (3,420 words) [view diff] exact match in snippet view article find links to article

start of the Permian to the Pleistocene, there is a large gap in the geologic record, although the gap is interrupted by minor deposits of Cretaceous and

Geology of Antigua and Barbuda (429 words) [view diff] exact match in snippet view article find links to article

from the Pleistocene and include reef and lagoon related rocks. The geologic record of Antigua indicates a transition from island arc volcanism to limestone

Relict (geology) (464 words) [view diff] exact match in snippet view article

study of soil formation and classification, ancient soil found in the geologic record is called a paleosol, material formed in the distant past on what was

Geology of the Grand Canyon area (6,766 words) [view diff] exact match in snippet view article find links to article

extinct desert. There are at least 14 known unconformities in the geologic record found in the Grand Canyon. Uplift of the region started about 75 million

Earliest known life forms (6,978 words) [view diff] exact match in snippet view article find links to article

vent precipitates from Barberton, South Africa. Much later in the geologic record, likely starting in 1.73 Ga, preserved molecular compounds of biologic

Sand geyser (425 words) [view diff] exact match in snippet view article find links to article

occurs in association with earthquakes and other seismic events. In the geologic record, these are seen as clastic dikes. It is described as "a geyser of sand

Rhizolith (1,411 words) [view diff] exact match in snippet view article find links to article

roots, are important for identifying paleosols in the post-Silurian geologic record. Rock units whose structure and fabric were established largely by

Magnetofossil (1,564 words) [view diff] exact match in snippet view article find links to article

produced by magnetotactic bacteria (magnetobacteria) and preserved in the geologic record. The oldest definitive magnetofossils formed of the mineral magnetite

Shocked quartz (664 words) [view diff] exact match in snippet view article find links to article

significantly contribute to the accumulation of shocked quartz in the geologic record. Mantle xenoliths and sediments derived from them may contain coesite

Sequence stratigraphy (2,614 words) [view diff] exact match in snippet view article find links to article

there is a clear gap in the record. Conversely within a sequence the geologic record should be relatively continuous and complete record that is genetically

Paleolightning (3,263 words) [view diff] exact match in snippet view article find links to article

and global average temperatures. Detecting lightning activity in the geologic record can be difficult, given the instantaneous nature of lightning strikes

Sedimentary basin (4,615 words) [view diff] exact match in snippet view article find links to article

basin development as a result of isostasy. The long-term preserved geologic record of a sedimentary basin is a large scale contiguous three-dimensional

Heinz A. Lowenstam (1,442 words) [view diff] exact match in snippet view article find links to article

research on coral reefs and their influence on biologic processes in the geologic record. Heinz Adolf Lowenstam was born in 1912 in Upper Silesia, which was

Lastarria (6,151 words) [view diff] no match in snippet view article find links to article

Lastarria is a 5,697 metres (18,691 ft) high stratovolcano that lies on the border between Chile and Argentina. It is remote, and the surroundings are

Limestone (8,494 words) [view diff] exact match in snippet view article find links to article

compositions of carbonate rocks show an uneven distribution in time in the geologic record. About 95% of modern carbonates are composed of high-magnesium calcite

Stratigraphy (1,215 words) [view diff] exact match in snippet view article find links to article

region, and then to every region, and by extension to provide an entire geologic record of the Earth. A gap or missing strata in the geological record of an

Pangaea (4,688 words) [view diff] exact match in snippet view article find links to article

Pangaea is the most recent supercontinent reconstructed from the geologic record and therefore is by far the best understood. The formation of supercontinents

Novopangaea (396 words) [view diff] exact match in snippet view article find links to article

supercontinent will form in that time frame. Beyond that, he cautions that the geologic record is full of unexpected shifts in tectonic activity that make further

Flood basalt (4,888 words) [view diff] exact match in snippet view article find links to article

rocks, forming enormous deposits of basaltic rock found throughout the geologic record. They are a highly distinctive form of intraplate volcanism, set apart

Rhythmite (705 words) [view diff] exact match in snippet view article find links to article

Rhythmites may be deposited with periodicities other than annual. The geologic record captures both more frequent events (e.g., tides) and less frequent

Pangean megamonsoon (3,325 words) [view diff] exact match in snippet view article find links to article

monsoon circulation was first proposed in 1973. The evaporites in the geologic record suggest vast and extensive regions of persistent dry conditions near

Aurica (supercontinent) (402 words) [view diff] exact match in snippet view article

without supercontinent formation. Beyond that, he cautions that the geologic record is full of unexpected shifts in tectonic activity that make further

Crater chain (441 words) [view diff] case mismatch in snippet view article find links to article

Weissman P. R. (June 1996). "Cometary Nuclei and Tidal Disruption: The Geologic Record of Crater Chains on Callisto and Ganymede" (PDF). Icarus. 21 (2): 249–274

Paleontology in Oklahoma (5,821 words) [view diff] exact match in snippet view article find links to article

fossils in the United States due to having an exceptionally complete geologic record of the epoch. From the Cambrian to the Devonian, all of Oklahoma was

Mastcam-Z (831 words) [view diff] exact match in snippet view article find links to article

overall landscape geomorphology, processes, and the nature of the geologic record (mineralogy, texture, structure, and stratigraphy) at the rover field

Contact (geology) (966 words) [view diff] exact match in snippet view article

in the rock beds. Conformable contacts represent no time gap in the geologic record. They are usually planar, though they may have slightly irregular topography

Antofalla (4,650 words) [view diff] no match in snippet view article find links to article

Antofalla is a Miocene-Pliocene volcano in Argentina's Catamarca Province. It is part of the volcanic segment of the Andes in Argentina, and it is considered

Amasia (supercontinent) (332 words) [view diff] exact match in snippet view article

supercontinent will form in that time frame. Beyond that, he cautions that the geologic record is full of unexpected shifts in the tectonic activity that make further

Aguas Calientes caldera (2,060 words) [view diff] no match in snippet view article find links to article

Aguas Calientes is a major Miocene caldera in Salta Province, Argentina. It is in the Central Volcanic Zone of the Andes, a zone of volcanism covering

True polar wander on Mars (428 words) [view diff] exact match in snippet view article find links to article

91–141 Tanaka, K.L., 2000. "Dust and ice deposition in the Martian geologic record". Icarus 144, 254–266. Fishbaugh, K., Head, J. 2000. "North polar region

Pali-Aike volcanic field (6,099 words) [view diff] no match in snippet view article find links to article

The Pali-Aike volcanic field is a volcanic field along the Argentina–Chile border. It is part of a family of back-arc volcanoes in Patagonia, which formed

Geology of the Death Valley area (5,531 words) [view diff] exact match in snippet view article find links to article

at least 23 formations of sedimentary units, two major gaps in the geologic record called unconformities, and at least one distinct set of related formations

Afro-Eurasia (1,124 words) [view diff] exact match in snippet view article find links to article

supercontinent will form within the settled time frame, however, and the geologic record is full of unexpected shifts in tectonic activity that make further

Bandelier Tuff (2,672 words) [view diff] exact match in snippet view article find links to article

Bandelier Tuff was one of the first ignimbrites recognized in the geologic record, and has been extensively studied by geologists seeking to understand

Paleoflooding (3,549 words) [view diff] exact match in snippet view article find links to article

The phenomenon of paleoflooding is apparent in the geologic record over various spatial and temporal scales. It often occurred on a large scale, and was

Avulsion (river) (1,342 words) [view diff] exact match in snippet view article

deposition in the delta. This deposition fills the channels and leaves a geologic record of channel avulsion in sedimentary basins. On average, an avulsion

Phoenix Mountains (656 words) [view diff] exact match in snippet view article find links to article

quartzite and volcaniclastic rocks that extend toward Quartzite Ridge. No geologic record is retained in the Phoenix area regarding what happened between the

Cerro Guacha (3,121 words) [view diff] no match in snippet view article find links to article

Cerro Guacha is a Miocene caldera in southwestern Bolivia's Sur Lípez Province. Part of the volcanic system of the Andes, it is considered to be part of

Chronology of continents (757 words) [view diff] case mismatch in snippet view article find links to article

Rodinia and Pannotia, p. 68 Bradley, D.C. (2011). "Secular Trends in the Geologic Record and the Supercontinent Cycle". Earth-Science Reviews. 108 (1–2): 16–33

Lava (6,577 words) [view diff] exact match in snippet view article find links to article

sole example of an active carbonatite volcano. Carbonatites in the geologic record are typically 75% carbonate minerals, with lesser amounts of silica-undersaturated

Samuel Bowring (404 words) [view diff] exact match in snippet view article find links to article

of geologic processes and the timing of significant events in the geologic record. He investigated the explosion of multi-cellular life in the Early

Danian (1,387 words) [view diff] exact match in snippet view article find links to article

which took place over a 170-230 kyr time interval, is evidenced in the geologic record by two negative carbon isotope excursions and is believed to have led

System (disambiguation) (510 words) [view diff] exact match in snippet view article

nature, society, and science System (stratigraphy), a unit of the geologic record of a rock column Systems engineering, a field about design, integration

Japan Trench (2,411 words) [view diff] exact match in snippet view article find links to article

turbidity currents. These turbidites preserve the sediment deposits as a geologic record of past large earthquakes by indicating the change in sediment deposition

Volcano (9,873 words) [view diff] exact match in snippet view article find links to article

glacial deposits, supervolcanoes can be difficult to identify in the geologic record without careful geologic mapping. Submarine volcanoes are common features

Geology of the Capitol Reef area (5,471 words) [view diff] exact match in snippet view article find links to article

millions of years. The various kinds of unconformities are gaps in the geologic record. Such gaps can be due to a prolonged absence of deposition or due to

Yoldia Sea (911 words) [view diff] exact match in snippet view article find links to article

lasted ~300 years (292–309 annual deposition varves are seen in the geologic record, depending on where measured). The Yoldia Sea – a short lived connection

Uranium–lead dating (1,273 words) [view diff] exact match in snippet view article find links to article

traditionally used for age dating, but are more commonly available in the geologic record. During the alpha decay steps, the zircon crystal experiences radiation

Proterozoic (2,091 words) [view diff] exact match in snippet view article find links to article

and provides the first obvious fossil evidence of life on Earth. The geologic record of the Proterozoic Eon is more complete than that for the preceding

Hadean (3,043 words) [view diff] exact match in snippet view article find links to article

Science. p. 30. ISBN 9780081029091. Lowe, DR; Byerly, GR (2015). "Geologic record of partial ocean evaporation triggered by giant asteroid impacts, 3

Geological history of Mars (1,796 words) [view diff] exact match in snippet view article find links to article

formation of the Hellas impact basin, between 4.1 and 3.8 Gya. Most of the geologic record of this interval has been erased by subsequent erosion and high impact

Caliche (2,123 words) [view diff] exact match in snippet view article find links to article

characteristic landforms in arid environments. Calcrete is found throughout the geologic record, forming a record of past climate. Examples include Mississippian calcretes

Paleontology in Georgia (U.S. state) (1,184 words) [view diff] exact match in snippet view article

included blastoids, bryozoans, cephalopods, crinoids, and gastropods. The geologic record of the Triassic is sparse in Georgia and the Jurassic is absent altogether

Ojo Alamo Formation (976 words) [view diff] exact match in snippet view article find links to article

divided into two subunits separated by a large unconformity—a gap in the geologic record. The lower Naashoibito member (sometimes considered part of the Kirtland

Callaghan Valley (438 words) [view diff] exact match in snippet view article find links to article

between 25,000 and 11,000 years ago whose age is extremely young in the geologic record. The Callaghan Valley is a unique microclimate surrounded by a circular

Deicke and Millbrig bentonite layers (1,668 words) [view diff] exact match in snippet view article find links to article

bentonite layers. Due to the large expanse of these layers in the geologic record outcrops can be found all over the country. Some researchers have worked

Geomicrobiology (2,435 words) [view diff] exact match in snippet view article find links to article

Microbially induced sedimentary structures (MISS) are found throughout the geologic record up to 3.2 billion years old. They are formed by the interaction of

Stromatolite (3,942 words) [view diff] exact match in snippet view article find links to article

(that is, green algae). One genus of stromatolite very common in the geologic record is Collenia. The connection between grazer and stromatolite abundance

Supercontinent (3,806 words) [view diff] case mismatch in snippet view article find links to article

1016/S0899-5362(99)00018-4. Bradley, D.C. (2011). "Secular Trends in the Geologic Record and the Supercontinent Cycle". Earth-Science Reviews. 108 (1–2): 16–33

Carotane (532 words) [view diff] exact match in snippet view article find links to article

takes to degrade carotane, the species allows for a more extensive geologic record. Carotane was first measures in the Green River Formation. It was discovered

Glossary of archaeology (2,598 words) [view diff] exact match in snippet view article find links to article

first appearance datum (FAD) The first appearance of a species in the geologic record; the age of the oldest known fossil of a particular species flotation

Coal combustion products (9,165 words) [view diff] exact match in snippet view article find links to article

modern fly ash were released into the oceans, which is preserved in the geologic record in marine deposits located in the Canadian High Arctic. It has been

Oceans of Kansas (book) (445 words) [view diff] exact match in snippet view article

in central Northwestern Kansas (e.g., Trego and Gove Counties). The geologic record shows that ancient lifeforms such as marine reptiles, pteranodons,

Phosphatization (962 words) [view diff] exact match in snippet view article find links to article

of the most spectacular cellular-level preservation known from the geologic record. The fossils include what may be metazoan blastulas, possibly animal

Death Valley National Park (7,056 words) [view diff] exact match in snippet view article find links to article

the Ibex Formation. An angular unconformity (an uneven gap in the geologic record) followed. A true ocean basin developed to the west, breaking all the

Yellowstone Caldera (3,886 words) [view diff] exact match in snippet view article find links to article

controversy is the relatively sudden appearance of the hotspot in the geologic record. Additionally, the Columbia Basalt flows appeared at the same approximate

Farallon Negro (volcano) (3,731 words) [view diff] no match in snippet view article

27°15′S 66°33′W / 27.250°S 66.550°W / -27.250; -66.550 Farallon Negro is a volcano in the Catamarca province of Argentina. Active between about 9-8

Pangaea Proxima (1,855 words) [view diff] exact match in snippet view article find links to article

without supercontinent formation. Beyond that, he cautions that the geologic record is full of unexpected shifts in tectonic activity driven by currents

Central Oregon Coast Range (1,500 words) [view diff] exact match in snippet view article find links to article

Eocene to Paleocene age. Portions of this include marine fossils in the geologic record. Sandstone and shale are also present in the sections of the mountains

Mars Astrobiology Explorer-Cacher (2,513 words) [view diff] exact match in snippet view article find links to article

support and sustain life on Mars are currently present, and the Martian geologic record offers tantalizing clue of many ancient habitable environments. If

Central Oregon Coast Range (1,500 words) [view diff] exact match in snippet view article find links to article

Eocene to Paleocene age. Portions of this include marine fossils in the geologic record. Sandstone and shale are also present in the sections of the mountains

Yellowstone Caldera (3,886 words) [view diff] exact match in snippet view article find links to article

controversy is the relatively sudden appearance of the hotspot in the geologic record. Additionally, the Columbia Basalt flows appeared at the same approximate

Hirnantian (2,065 words) [view diff] exact match in snippet view article find links to article

of the Hirnantian Stage is defined by the first appearance in the geologic record of the graptolite Normalograptus extraordinarius, and thus, the Normalograptus

Raindrop impressions (528 words) [view diff] exact match in snippet view article find links to article

should occur equally on sand-sized material as well as mud, yet in the geologic record these impressions are largely confined to fine-grained rock. Even when

Sulfur cycle (5,855 words) [view diff] exact match in snippet view article find links to article

precipitate out of solution. 3.8–3.6 Ga marks the beginning of the exposed geologic record because this is the age of the oldest rocks on Earth. Metasedimentary

Petrified wood (3,172 words) [view diff] exact match in snippet view article find links to article

While wood petrified in this setting is only a minor part of the geologic record, hot spring deposits are important to paleontologists because such

Agroecomyrmecinae (1,424 words) [view diff] exact match in snippet view article find links to article

clade. Given the early appearance of the Agroecomyrmecinae in the geologic record, the similarities of armadillo ants to Myrmicinae were hypothesized

Osmundastrum (1,119 words) [view diff] exact match in snippet view article find links to article

is considered a living fossil because it has been identified in the geologic record as far back as 75 million years ago. The oldest member of the genus

Volcanic gas (2,767 words) [view diff] exact match in snippet view article find links to article

(September 2019). "Mercury as a proxy for volcanic emissions in the geologic record". Earth-Science Reviews. 196: 102880. doi:10.1016/j.earscirev.2019

Quaternary glaciation (4,463 words) [view diff] exact match in snippet view article find links to article

several major periods of ancient glaciation in various parts of the geologic record. Such evidence suggests major periods of glaciation prior to the current

Colorado National Monument (1,677 words) [view diff] exact match in snippet view article find links to article

also included as an example of the Mission 66 program. The park's geologic record preserves three different groups of rock and sediment. The oldest rocks

Paleontology in Pennsylvania (2,387 words) [view diff] exact match in snippet view article find links to article

the ensuing Tertiary period of the Cenozoic era in Pennsylvania's geologic record. However, during the Pleistocene, glaciers covered much of the state

Triassic (7,413 words) [view diff] exact match in snippet view article find links to article

trend is superimposed by 22 sea level drop events widespread in the geologic record, mostly of minor (less than 25-metre (82 ft)) and medium (25–75-metre

Mount Pinatubo (4,362 words) [view diff] exact match in snippet view article find links to article

largest. The 1991 eruption was among the smallest documented in its geologic record. The volcano has never grown very large between eruptions, because

Silurian (Doctor Who) (3,303 words) [view diff] exact match in snippet view article

detecting evidence of ancient industrial civilizations in Earth's geologic record, makes reference to the "Silurian hypothesis" in its title. This list

Gondwana (7,706 words) [view diff] case mismatch in snippet view article find links to article

Cocks 2013, Abstract Bradley, D.C. (2011). "Secular Trends in the Geologic Record and the Supercontinent Cycle". Earth-Science Reviews. 108 (1–2): 16–33

Micrometeorite (4,553 words) [view diff] exact match in snippet view article find links to article

Taylor, S.; Brownlee, D. E. (1991), "Cosmic spherules in the geologic record", Meteoritics, 26 (3): 203–211, Bibcode:1991Metic..26..203T, doi:10

Ordovician (7,298 words) [view diff] exact match in snippet view article find links to article

Robert J. (1989). "Temporal variations in tempestite thickness may be a geologic record of atmospheric CO2". Geology. 17 (10): 951. doi:10

Miracinonyx (2,688 words) [view diff] case mismatch in snippet view article find links to article

Wyoming, U.S.A. Records a Detailed Faunal, Floral, aDNA, Isotopic, and Geologic Record of the Late Quaternary. 647–648: 81–87. Bibcode:2023QuInt.647...81H

Peter Ward (paleontologist) (1,503 words) [view diff] exact match in snippet view article

Evolution series (2001) to discuss the evidence for evolution in the geologic record and has appeared on NOVA scienceNOW. He was also one of the scientists

Paleoliquefaction (607 words) [view diff] exact match in snippet view article find links to article

flows like water, leaving several kinds of evidence behind in the geologic record. Dikes are intrusions of a lower liquefied sand that penetrate strata

Plastiglomerate (788 words) [view diff] exact match in snippet view article find links to article

could potentially form a marker horizon of human pollution on the geologic record. and may survive as future fossils. Plastiglomerate may also conceivably

Great Valley Sequence (2,191 words) [view diff] exact match in snippet view article find links to article

Batholiths and metamorphosed volcanic rocks in the Sierra Nevada are the geologic record of this volcanic arc. As these ancient Sierran volcanoes were rapidly

Amazonis quadrangle (4,252 words) [view diff] exact match in snippet view article find links to article

1038/s41467-018-05291-5 Tanaka, K. L. Dust and ice deposition in the Martian geologic record. Icarus 144, 254–266 (2000). Wilson, J. et al. 2018. Equatorial locations

Lubbock Lake Landmark (1,427 words) [view diff] exact match in snippet view article find links to article

drying trend occurring at Lubbock Lake over the last 11,000 years. The geologic record begins with stream deposits, followed by lake sedimentation, and finishes

Sierra de las Quijadas National Park (1,531 words) [view diff] exact match in snippet view article find links to article

completely filled 100 mya. The following 75 Ma are missing from the geologic record and are assumed to be a period of calm. During the Tertiary, the layers

Volcanic winter (5,037 words) [view diff] exact match in snippet view article find links to article

triggering the most extraordinary episode of climate change in the geologic record. The causes of the population bottleneck – a sharp decrease in a species'

Magma (7,662 words) [view diff] exact match in snippet view article find links to article

sole example of an active carbonatite volcano. Carbonatites in the geologic record are typically 75% carbonate minerals, with lesser amounts of silica-undersaturated

Armored mud ball (1,360 words) [view diff] exact match in snippet view article find links to article

disintegrate after drying out, making them a rare occurrence in the geologic record. However, if armored mud balls are buried quickly, there is a chance

Pediment (geology) (1,207 words) [view diff] exact match in snippet view article

their formation. Ancient pediments surfaces have been found in the geologic record as far back as the Proterozoic. The processes responsible for creating

Comet Shoemaker–Levy 9 (5,508 words) [view diff] case mismatch in snippet view article find links to article

Weissman, Paul R. (June 1996). "Cometary Nuclei and Tidal Disruption: The Geologic Record of Crater Chains on Callisto and Ganymede". Icarus. 121 (2): 249–24

Bruce Jakosky (2,514 words) [view diff] exact match in snippet view article find links to article

and B.M. Jakosky, Atmospheric loss since the onset of the martian geologic record: The combined role of impact erosion and sputtering, J. Geophys. Res

Volcanic winter (5,037 words) [view diff] exact match in snippet view article find links to article

triggering the most extraordinary episode of climate change in the geologic record. The causes of the population bottleneck – a sharp decrease in a species'

American lion (3,783 words) [view diff] case mismatch in snippet view article find links to article

Wyoming, U.S.A. Records a Detailed Faunal, Floral, aDNA, Isotopic, and Geologic Record of the Late Quaternary. 647–648: 81–87. Bibcode:2023QuInt.647...81H

Propædia (680 words) [view diff] no match in snippet view article find links to article

ent of the Earth and Its Envelopes 2.4.2 The Interpretation of the Geologic Record 2.4.3 Eras and Periods of Geologic Time 3. Life 3.1 The Nature and

Anza-Borrego Desert State Park (3,474 words) [view diff] exact match in snippet view article find links to article

Coachella Valley. Over the past seven million years, a relatively complete geologic record of over 20,000 ft (6,100 m) of fossil-bearing sediment has been deposited

Geology of the Dallas–Fort Worth Metroplex (3,263 words) [view diff] exact match in snippet view article find links to article

sediments of mostly Cretaceous age, which also obscures a much older geologic record. Sediments older than Cretaceous can only be found at the surface in

Geology of the Bryce Canyon area (3,332 words) [view diff] exact match in snippet view article find links to article

Bridge, were carved from sandstone beds in the Claron. A gap in the geologic record following deposition of the Claron Formation was interrupted 34 to

Mount Baker (4,988 words) [view diff] exact match in snippet view article find links to article

is the last episode of undoubted magmatic activity preserved in the geologic record. First, the largest collapse in the history of the volcano occurred

Canyonlands National Park (4,680 words) [view diff] exact match in snippet view article find links to article

resulted. A period of erosion then ensued, creating a break in the geologic record called an unconformity. Early in the Permian an advancing sea laid

Lawsonite (1,436 words) [view diff] exact match in snippet view article find links to article

Lawsonite also occurs in eclogite, although it is rarely preserved in the geologic record. A common assemblage in lawsonite eclogite is garnet + omphacite +

Orogenic collapse (1,491 words) [view diff] exact match in snippet view article find links to article

construction, growth and collapse of the Variscan orogenic belt: the geologic record of the French Massif Central". Bulletin de la Société Géologique de

Paleontology in South Dakota (2,218 words) [view diff] exact match in snippet view article find links to article

deposited. During the Triassic period, sedimentation resumed. The geologic record reveals that South Dakota was a moist coastal plain at that time. Seawater

Berkeley, California (13,019 words) [view diff] exact match in snippet view article find links to article

times (except possibly in 1836), but seismologists warn about the geologic record of large temblors several times in the deeper past. The current assessment

2011 Virginia earthquake (7,289 words) [view diff] exact match in snippet view article find links to article

distance over which landslides occur may also help us reach back into the geologic record to look for evidence of past major earthquakes from the Virginia seismic

Lightning (13,442 words) [view diff] exact match in snippet view article find links to article

and global average temperatures. Detecting lightning activity in the geologic record can be difficult, given the instantaneous nature of lightning strikes

James Hutton (5,515 words) [view diff] exact match in snippet view article find links to article

time for the changes. Contemporary investigations had shown that the geologic record required vast time, but no good way of assigning actual years was found

Impact events on Jupiter (7,100 words) [view diff] case mismatch in snippet view article find links to article

; Asphaug, Erik (1996). "Cometary Nuclei and Tidal Disruption: The Geologic Record of Crater Chains on Callisto and Ganymede". Icarus. 121 (2): 249–24

Oak Ridges Moraine (4,257 words) [view diff] exact match in snippet view article find links to article

overlying stratigraphic successions is an unconformity (a gap in the geologic record) where many millions of years of depositional or crystalline record

List of largest volcanic eruptions (3,688 words) [view diff] exact match in snippet view article find links to article

often associated with breakup of supercontinents such as Pangea in the geologic record, and may have contributed to a number of mass extinctions. Most large

Picea critchfieldii (2,747 words) [view diff] exact match in snippet view article find links to article

degrees of magnitude. The Late Quaternary is well-represented in the geologic record at globally-distributed sites. Sites representative of the Late Quaternary

Gaia hypothesis (9,369 words) [view diff] exact match in snippet view article find links to article

still undergo vectorial change at longer time scales? How can the geologic record be used to examine these questions?" "What is the structure of Gaia

Lilliput effect (795 words) [view diff] exact match in snippet view article find links to article

terrestrial, is notably smaller than those preceding and following in the geologic record. The extinction event may have been more severe for the larger-bodied

Geology of the Canyonlands area (1,502 words) [view diff] exact match in snippet view article find links to article

Colorado River. A period of erosion then ensued, creating a break in the geologic record called an unconformity. Early in the Permian a transgressing (advancing)

Banded iron formation (7,104 words) [view diff] exact match in snippet view article find links to article

Abundance of banded iron formation in the geologic record. Color indicates dominant type. Red = older Archean formations; green = Greater Gondwana formations;

Isotopic signature (4,619 words) [view diff] exact match in snippet view article find links to article

Mass-independent sulfur isotope fractionations are found to be widespread in the geologic record before about 2.45 billion years ago, and these isotopic signatures

Dianne Newman (663 words) [view diff] exact match in snippet view article find links to article

pathways, interpret the chemical signatures of early life found in the geologic record, and understand how multicellular bacterial communities survive in

Mount Jefferson (Oregon) (6,630 words) [view diff] exact match in snippet view article

Jefferson does not exceed 1 in 100,000. However, given the incomplete geologic record, imprecise dating of its known deposits, and its lack of relatively

South Pass greenstone belt (1,851 words) [view diff] exact match in snippet view article find links to article

breccias and intensely folded schists, representing a major break in the geologic record, is found at the top of the formation. The Goldman Meadows Formation

Kapthurin Formation (2,044 words) [view diff] exact match in snippet view article find links to article

Chemeron and Kapthurin likely represents a significant gap in the geologic record, then. The majority of radiometric dates in the Kapthurin are Argon-Argon

Cold seep (10,585 words) [view diff] exact match in snippet view article find links to article

techniques. Cold seep deposits are found throughout the Phanerozoic geologic record, especially in the Late Mesozoic and Cenozoic. Notable examples can

Tatuidris (2,631 words) [view diff] exact match in snippet view article find links to article

clade. Given the early appearance of the Agroecomyrmecinae in the geologic record, the similarities of armadillo ants to Myrmicinae were hypothesized

Park City Formation (1,071 words) [view diff] exact match in snippet view article find links to article

Dinwoody Formation. The last epoch of the Permian is missing from the geologic record in this area, meaning there is a time gap of around 8 million years

Worlds in Collision (4,713 words) [view diff] exact match in snippet view article find links to article

is a brief in favour of global, cosmic catastrophes to explain the geologic record; but it does not make its case to the exclusion of alternate explanations

Bioturbation (7,508 words) [view diff] exact match in snippet view article find links to article

at shallower depths. Arthropods, in particular are important to the geologic record of bioturbation of Eolian sediments. Dune records show traces of burrowing

Halomonas meridiana (860 words) [view diff] exact match in snippet view article find links to article

"Aerobic microbial dolomite at the nanometer scale: Implications for the geologic record". Geology. 36 (11): 879. Bibcode:2008Geo....36..879S. doi:10.1130/g25013a

Mary C. Hill (667 words) [view diff] case mismatch in snippet view article find links to article

accessed 2019-09-02 "Distinguished Hydrologist Comes to KU" (PDF), The KU Geologic Record, 10: 2, September 2014[permanent dead link] Professor establishes research

Siberian natural resources (2,068 words) [view diff] exact match in snippet view article find links to article

of much fly ash in sediments across the world. See Fly ash#In the geologic record. The Siberian petroleum sources follow (in tonnes - 1 tonne of petroleum

Biological pump (16,299 words) [view diff] exact match in snippet view article find links to article

carbon that is permanently buried at the sea floor becomes part of the geologic record. Calcium carbonate often forms remarkable deposits that can then be

Geology of the Grand Teton area (4,882 words) [view diff] exact match in snippet view article find links to article

rocks. The Precambrian rocks were uplifted during this gap in the geologic record known as an unconformity; exposed to erosion they were gradually worn

List of lay Catholic scientists (4,551 words) [view diff] exact match in snippet view article find links to article

paleontologist who provided the first example of evolution described from the geologic record, after studying Jurassic ammonites James Joseph Walsh (1865–1942) –

Particulate inorganic carbon (6,029 words) [view diff] exact match in snippet view article find links to article

carbon that is permanently buried at the sea floor becomes part of the geologic record. Calcium carbonate often forms remarkable deposits that can then be

Clastic dike (3,084 words) [view diff] exact match in snippet view article find links to article

associated with earthquakes – A large variety of dikes are found in the geologic record. However, clastic dikes are typically produced by seismic disturbance

Boring Billion (7,845 words) [view diff] exact match in snippet view article find links to article

to be a black- and milky-turquoise color instead of blue. Earth's geologic record indicates two events associated with significant increases in oxygen

Carbonate-associated sulfate (5,657 words) [view diff] exact match in snippet view article find links to article

sulfate minerals within evaporites, which are somewhat sparse in the geologic record, often poorly preserved, and necessarily associated with complicated

Isoarborinol (1,195 words) [view diff] exact match in snippet view article find links to article

isoarborinol loses its hydroxyl group and becomes saturated. Arborane is the diagenetic end product of isoarborinol that gets preserved in the geologic record.

North African climate cycles (3,782 words) [view diff] exact match in snippet view article find links to article

of large lakes in the Sahara can be found and interpreted from the geologic record. These lakes fill as the precession cycle approaches the insolation

Climate and vegetation interactions in the Arctic (2,675 words) [view diff] case mismatch in snippet view article find links to article

environmental change. National Research Council (U.S.). Committee on the Geologic Record of Biosphere Dynamics. Washington, D.C.: National Academies Press.

Wendell P. Woodring (1,673 words) [view diff] case mismatch in snippet view article find links to article

organized the Woodring Conference on Major Biologic Innovations and the Geologic Record. The Woodring Conference, attended by twenty-three scientists from

Dinosterol (3,478 words) [view diff] exact match in snippet view article find links to article

be related back to their parent sterols and are more stable in the geologic record. The preservation of sterols is often limited, but is enhanced by anaerobic

2018 in paleontology (39,725 words) [view diff] exact match in snippet view article find links to article

000 years, is presented by Yokoyama et al. (2018). A study on the geologic record of Milankovitch climate cycles, extending their analysis into the Proterozoic

Marc Lafia (2,933 words) [view diff] case mismatch in snippet view article find links to article

prominence in recent years. Extinction, Extension: A New Slice of the Geologic Record (2023), exhibited at the Guangzhou Triennial in 2023, deployed large

Michael R. Rampino (3,861 words) [view diff] exact match in snippet view article find links to article

Rampino proposed the radical idea that some “glacial” deposits in the geologic record are actually impact-related debris flows. Rampino has investigated

Paquier Event (2,224 words) [view diff] exact match in snippet view article find links to article

carbonate production. As with other OAEs, OAE1b left its mark on the geologic record in the form of widespread and abundant deposition of black shales.

Jay Quade (1,421 words) [view diff] exact match in snippet view article find links to article

Jason A.; Quade, Jay; Bright, Jordon (2014). "Desert wetlands in the geologic record". Earth-Science Reviews. 132: 67–81. Bibcode:2014ESRv..132...67P. doi:10

Sulfur isotope biogeochemistry (8,512 words) [view diff] exact match in snippet view article find links to article

processes and the environments where they occurred. δ34S values in the geologic record have been inferred to reveal the history of microbial sulfate reduction