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searching for Volcanic glass 130 found (217 total)

Jaguar warrior (954 words) [view diff] exact match in snippet view article find links to article

have survived. They fought with a wooden club, studded with obsidian volcanic glass blades, called a macuahuitl. They also used spears and atlatls. To become

List of countries by bentonite production (223 words) [view diff] exact match in snippet view article find links to article

stratigraphy and tephrochronology, completely devitrified (weathered volcanic glass) ash-fall beds are commonly referred to as K-bentonites when the dominant

Incremental dating (447 words) [view diff] exact match in snippet view article find links to article

inspect the depth of penetration of water vapor into chipped obsidian (volcanic glass) artifacts. The water vapor creates a "hydration rind" in the obsidian

Glass Mountain (California) (217 words) [view diff] exact match in snippet view article

between 2.1 and 0.8 million years ago.Obsidian, a naturally occurring volcanic glass, can be found on the mountain. "Glass Mountain". NGS Data Sheet. National

Mineraloid (416 words) [view diff] exact match in snippet view article find links to article

of iron Mercury, (as liquid) Moldavite Mookaite/Radiolarite Obsidian—volcanic glass; non-crystalline structure, a silica rich glass Opal, non-crystalline

Obsidian Cliff (480 words) [view diff] exact match in snippet view article find links to article

200 feet above Obsidian Creek. The flow consists of obsidian, a dark volcanic glass. The obsidian is most abundant at the base of the cliff and slowly tapers

Maskelynite (323 words) [view diff] exact match in snippet view article find links to article

British geologist M.H.N. Story-Maskelyne. Since maskelynite (like the volcanic glass obsidian) lacks an orderly arrangement of atoms, it is not considered

Obsidian use in Mesoamerica (2,872 words) [view diff] exact match in snippet view article find links to article

Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre-Columbian Mesoamerica. Obsidian was a highly integrated

List of rock types (2,218 words) [view diff] exact match in snippet view article find links to article

fallback – A hypersthene-bearing gabbro Obsidian – Naturally occurring volcanic glass Pegmatite – Igneous rock with very large interlocked crystals Peridotite –

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

gravity of 2.1 to 2.2. It commonly occurs as a devitrification product of volcanic glass shards in tuff and as vesicle fillings in basalts, andesites and rhyolites

Laze (geology) (336 words) [view diff] exact match in snippet view article

rapidly rising plume of gas also carries with it fine particles of volcanic glass. The hydrochloric acid and other contaminants can precipitate out rapidly

Opsidia gens (586 words) [view diff] exact match in snippet view article find links to article

several are found in inscriptions. One Obsidius gave his name to the volcanic glass obsidian. The nomen Opsidius belongs to a class of gentilicia formed

Keahole Point (449 words) [view diff] exact match in snippet view article find links to article

site includes a house platform, a walled enclosure, a debris pile with volcanic glass and marine shells, and a larger wall. Probably the home of a common

Lou Island (171 words) [view diff] exact match in snippet view article find links to article

147°20'31.4" The. island is one of the few sites in the South Pacific where volcanic glass or obsidian was mined to be fashioned into weapons or tools; obsidian

Australite (707 words) [view diff] exact match in snippet view article find links to article

australites were of volcanic origin due to their similarity to obsidian, volcanic glass. Later, australites were called blackfellows' buttons and obsidian bombs

Tomatlán, Veracruz (565 words) [view diff] case mismatch in snippet view article find links to article

Cobean, Robert H. (2002). A World of Obsidian: The Mining and Trade of a Volcanic Glass in Ancient Mexico. INAH. p. 163. ISBN 9789701825082. Estado de Veracruz-Llave

Menan Buttes (614 words) [view diff] exact match in snippet view article find links to article

aquifer or with the precursor of the modern Snake River. Particles of volcanic glass called tachylite were created as the water turned to steam and explosively

Isotropy (1,245 words) [view diff] exact match in snippet view article find links to article

This sand grain made of volcanic glass is isotropic, and thus, stays extinct when rotated between polarization filters on a petrographic microscope

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

areas of volcanic activity, and show evidence of ash or volcanic glass deposition. Volcanic glass weathers rapidly, providing an ample supply of soluble

Palike (450 words) [view diff] case mismatch in snippet view article find links to article

Pappalardo, L.; Puglisi, D.; Rizzo, F.; Romano, F. P. "Archeological Volcanic Glass from the Site of Rocchicella (Sicily, Italy)". Archaeometry. 50 (3):

Glass knife (869 words) [view diff] exact match in snippet view article find links to article

was used to make tools, including knives, out of obsidian, natural volcanic glass. From the 1920s until the 1940s, Dur-X glass fruit and cake knives were

Panum Crater (792 words) [view diff] exact match in snippet view article find links to article

glassy. Products of this rhyolitic eruption are pumice and obsidian, the volcanic glass that Native Americans used to make arrow points and scrapers. Panum

Knife making (925 words) [view diff] exact match in snippet view article find links to article

manufacturing techniques are quite different from metal: The natural volcanic glass obsidian can achieve a nearly molecular edge (high achievable sharpness)

Pyroxferroite (775 words) [view diff] exact match in snippet view article find links to article

volcanic lavas, where they are sometimes seen as crystals embedded in volcanic glass; it was assumed they were impurities in the glass, hence the name "fire

MoonRise (572 words) [view diff] exact match in snippet view article find links to article

for the Moon's thermal evolution Sample and analyze basaltic rock and volcanic glass, which record the composition and chemical evolution of the Moon's far-side

French polish (878 words) [view diff] exact match in snippet view article find links to article

thicker coats follow with small amounts of superfine pumice, a crushed volcanic glass. The pumice acts both as a fine abrasive and to fill the pores of open-grain

Kikai Caldera (2,056 words) [view diff] exact match in snippet view article find links to article

Danhara, Tohru (2019-08-11). "Major and trace element abundances in volcanic glass shards in visible tephras in SG93 and SG06 drillcore samples from Lake

QAPF diagram (856 words) [view diff] exact match in snippet view article find links to article

(Total-Alkali-Silica) is used. TAS is also used if volcanic rock contains volcanic glass (such as obsidian). QAPF diagrams are not used if mafic minerals make

Cristobalite (1,335 words) [view diff] exact match in snippet view article find links to article

Cristobalite is visible as the white inclusions in snowflake obsidian, a volcanic glass. Warr, L. N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical

List of National Historic Landmarks in Wyoming (304 words) [view diff] exact match in snippet view article find links to article

44.8189; -110.7278 (Obsidian Cliff) Park An exposure of obsidian (volcanic glass). It was a notable source of lithic materials for prehistoric peoples

Geography of Tonga (941 words) [view diff] exact match in snippet view article find links to article

pebbles for grave decoration." Tafahi island in the far north provided volcanic glass to initial human settlers. In December 2014 and January 2015, a volcanic

Nakbe (1,471 words) [view diff] exact match in snippet view article find links to article

believes they and similar exotic imports, such as jade and obsidian (a volcanic glass from which sharp tools could be fashioned), played an important role

Discovery of Fiji (859 words) [view diff] exact match in snippet view article find links to article

sent to Japan for assembling and further research. Obsidian, a rare volcanic glass found only in Papua New Guinea had been discovered there, according

Noctis Labyrinthus (2,389 words) [view diff] exact match in snippet view article find links to article

opal-CT), found to be comparable in spectral signature to some Icelandic volcanic glass lapilli Of the hydrated iron sulfate minerals observed in the basin

Preclassic Maya (1,407 words) [view diff] exact match in snippet view article find links to article

Kaminaljuyu's main export was the essential resource obsidian, a beautiful volcanic glass that easily fractured into sharp edges, providing arrowheads, knives

Glossary of geology (10,308 words) [view diff] exact match in snippet view article find links to article

less than 2 mm (0.079 in) in diameter of pulverized rock, minerals and volcanic glass, created during volcanic eruptions. asphalt A sticky, black and highly

Flint (2,617 words) [view diff] exact match in snippet view article find links to article

rock not to be confused with concretion Obsidian – Naturally occurring volcanic glass Onyx – Banded variety Opal – Hydrated amorphous form of silica Whinstone –

Waitematā Harbour (1,740 words) [view diff] exact match in snippet view article find links to article

Sparkling Waters", as the harbour waters were said to glint like the volcanic glass obsidian. However, this is incorrect, as grammatically Waitematā could

Lipari (1,888 words) [view diff] exact match in snippet view article find links to article

Sardinia, one of the few centres of trading in obsidian, a hard black volcanic glass prized by Neolithic peoples for the extremely sharp cutting edges that

Mayor Island / Tūhua (1,260 words) [view diff] exact match in snippet view article find links to article

of New Zealand) partly because of the presence of black obsidian, a volcanic glass created by the rapid cooling of silica-rich lava, prized as a cutting

Blade (archaeology) (1,567 words) [view diff] exact match in snippet view article

heat treatment or pressure flaking for lithics blades and identify volcanic glass textures, such as microlite and flow banding in obsidian blades. Experimental

List of English words of Hawaiian origin (302 words) [view diff] exact match in snippet view article find links to article

smooth-surface volcanic rock. [paːˈhoweˈhowe] Link Pele's hair A type of volcanic glass fibers named after Pele, the Hawaiian fire goddess of volcanoes (see

List of minerals (2,719 words) [view diff] exact match in snippet view article find links to article

Pericline (variety of albite) Peridot (gem-quality olivine) Perlite (volcanic glass) Phengite (variety of muscovite) Phosphorite (name given to impure,

Kuwae (1,684 words) [view diff] exact match in snippet view article find links to article

Erich C.; Hargreaves, Geoffrey M.; Yates, Martin G. (8 October 2019). "Volcanic glass properties from 1459 C.E. volcanic event in South Pole ice core dismiss

Extinction (optical mineralogy) (242 words) [view diff] exact match in snippet view article

A sand grain of volcanic glass under the petrographic microscope. Its amorphous nature makes it go extinct in cross-polarized light (bottom frame), and

Calcium silicate (1,077 words) [view diff] exact match in snippet view article find links to article

Broad range of building and sculpture materials Perlite – Amorphous volcanic glass Vermiculite – Hydrous phyllosilicate mineral which expands significantly

Vermiculite (2,764 words) [view diff] exact match in snippet view article find links to article

system to passively prevent the spread of fire Perlite – Amorphous volcanic glass Plaster – Broad range of building and sculpture materials Sodium silicate –

Chert (4,233 words) [view diff] exact match in snippet view article find links to article

rock not to be confused with Concretion Obsidian – Naturally occurring volcanic glass Opal – Hydrated amorphous form of silica Whinstone – Quarrying term

1458 mystery eruption (1,986 words) [view diff] exact match in snippet view article find links to article

Erich C.; Hargreaves, Geoffrey M.; Yates, Martin G. (8 October 2019). "Volcanic glass properties from 1459 C.E. volcanic event in South Pole ice core dismiss

Lithic analysis (2,560 words) [view diff] exact match in snippet view article find links to article

places around the world, such as Turkey and New Zealand, obsidian, or volcanic glass, was also a highly sought-after material for knapping and was widely

Endolith (3,517 words) [view diff] exact match in snippet view article find links to article

Thorsteinsson, T.; Tindle, A. G. (2009). "A cryptoendolithic community in volcanic glass". Astrobiology. 9 (4): 369–381. Bibcode:2009AsBio...9..369H. doi:10

Pozzolanic activity (1,524 words) [view diff] exact match in snippet view article find links to article

phase assemblages. Volcanic ash deposits containing large amounts of volcanic glass or zeolites are more reactive than quartz sands or detrital clay minerals

Coso Range (443 words) [view diff] exact match in snippet view article find links to article

the ancient Coso people. The prehistoric Coso inhabitants exported volcanic glass (Coso obsidian) and this highly valued toolstone has been found as far

Fission track dating (1,474 words) [view diff] exact match in snippet view article find links to article

range (typically 0.1 Ma to 2000 Ma). Apatite, sphene, zircon, micas and volcanic glass typically contain enough uranium to be useful in dating samples of relatively

Bronze mirror (1,814 words) [view diff] exact match in snippet view article find links to article

Bronze mirrors were themselves preceded by mirrors made of obsidian (volcanic glass), found across the Middle East. These remained the standard in the Americas

Macuahuitl (2,495 words) [view diff] exact match in snippet view article find links to article

are embedded with prismatic blades traditionally made from obsidian (volcanic glass); obsidian is capable of producing an edge sharper than high-quality

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

weather and disintegrate easily. Feldspar, amphiboles, pyroxenes, and volcanic glass are the principle donors of clay minerals. A mudstone is a siliciclastic

Diatomaceous earth (4,267 words) [view diff] exact match in snippet view article find links to article

material that can decolorise oil or other liquids Perlite – Amorphous volcanic glass Rock flour – Glacier-generated sediment Siliceous ooze – Biogenic pelagic

Volcano House (1,657 words) [view diff] exact match in snippet view article find links to article

evidence shows activity for hundreds of years, including gathering of volcanic glass to use as cutting tools. Only a few rare eruptions such as the one in

Aztec medicine (2,009 words) [view diff] exact match in snippet view article find links to article

performing surgical procedures by using knives which were made from volcanic glass (obsidian), the Ticitl would use these knives for procedures that involved

Pā (2,923 words) [view diff] exact match in snippet view article find links to article

and weapon manufacturing, including the manufacturing of obsidian (volcanic glass), chert and argillite basalt, flakes, pounamu chisels, adzes, bone and

Tektite (3,636 words) [view diff] exact match in snippet view article find links to article

because of their content of water and other volatiles. Unlike terrestrial volcanic glass, a tektite produces only a few bubbles at most when heated to its melting

Paleosol (3,205 words) [view diff] exact match in snippet view article find links to article

volcanic ash of siliceous nature, consisting of bubbles or shards of volcanic glass with a high internal surface area. This soil weathers rapidly to imogolite

Pele (deity) (3,224 words) [view diff] exact match in snippet view article

Pele's hair, a volcanic glass in strands

Isengard (2,651 words) [view diff] exact match in snippet view article find links to article

micro-crystalline wax by Wētā Workshop to resemble obsidian, black volcanic glass; it was made at 1/35 scale, standing some 15 feet (4.6 m) high. The

Texture (geology) (2,304 words) [view diff] exact match in snippet view article

Axiolitic texture results from spherulitic growth along fractures in volcanic glass, often from invasion of water. Intergrowths of two or more minerals

Tycho (lunar crater) (1,737 words) [view diff] exact match in snippet view article

crater. He also postulated that the crater's rays were composed of volcanic glass (tektites) akin to a theory postulated by NASA researchers Dean Chapman

Taurus–Littrow (2,167 words) [view diff] exact match in snippet view article find links to article

A close-up of the orange soil discovered on Apollo 17, the result of volcanic glass beads.

Shatsky Rise (1,688 words) [view diff] exact match in snippet view article find links to article

"Paleo-elevation and subsidence of Shatsky Rise inferred from CO2 and H2O in fresh volcanic glass". Earth and Planetary Science Letters. 383: 37–44. doi:10.1016/j.epsl

Hongcheon County (1,937 words) [view diff] exact match in snippet view article find links to article

archaeological excavations for establishing obsidian (a naturally occurring volcanic glass formed as an extrusive igneous rock) at many Paleolithic sites. One

Lunar soil (3,433 words) [view diff] exact match in snippet view article find links to article

Orange dirt found on Apollo 17, the result of volcanic glass beads

Land of the Lost (film) (3,025 words) [view diff] no match in snippet view article

amplifier into its caldera incubator. Treading lightly on the thin volcanic-glass floor of the glowing caldera, Marshall gives himself over to the music

Weathering (5,325 words) [view diff] exact match in snippet view article find links to article

temperatures and drier conditions. The fine grain size and presence of volcanic glass also hasten weathering. In tropical settings, it rapidly weathers to

Melilite (783 words) [view diff] exact match in snippet view article find links to article

Honolulu, O‘ahu, Hawai‘i surrounded by matrix of granular nepheline and volcanic glass. This rock (nepheline-melilite basalt) was erupted during rejuvenated

History of the Pitcairn Islands (4,270 words) [view diff] exact match in snippet view article find links to article

trading relationship with Mangareva, in which they exchanged basalt, volcanic glass (obsidian) and oven stones for goods, including coral and pearl shells

AL 333 (1,289 words) [view diff] exact match in snippet view article find links to article

fossils from the environment. Furthermore, the area had feldspars and volcanic glass that would be valuable for chronometric dating.: 467 From 1973 to 1977

Sensor (manga) (1,029 words) [view diff] exact match in snippet view article

a nearby village. Surprisingly, the village is covered in hair-like volcanic glass fibers, and all of it shines a bright gold. At night, when the villagers

Hatepe eruption (1,986 words) [view diff] exact match in snippet view article find links to article

Carter, Lionel; Charlier, Bruce L. A.; Newnham, Rewi M. (2023-10-09). "Volcanic glass from the 1.8 ka Taupō eruption (New Zealand) detected in Antarctic ice

Ancient Hawaii (4,183 words) [view diff] exact match in snippet view article find links to article

faunal remains, fishhooks, and lithic materials made of basalt and volcanic glass. The distribution of artifacts in site H8 indicated that it was continuously

Tel Motza (1,357 words) [view diff] exact match in snippet view article find links to article

made of an unknown type of stone, as well as items made of obsidian (volcanic glass) from Anatolia, and sea-shells, some of which were brought from the

Tushar Mountains (1,160 words) [view diff] exact match in snippet view article find links to article

in the Colorado Plateau. Also found are outcrops of strongly jointed volcanic glass in Clear Creek Canyon along the I-70 corridor called the Skinner Canyon

Sedimentary rock (7,683 words) [view diff] exact match in snippet view article find links to article

coral sand from Molokai, Hawaii 6. Coral pink sand dunes from Utah 7. Volcanic glass sand from California 8. Garnet sand from Emerald Creek, Idaho 9. Olivine

Komagata ruins (278 words) [view diff] exact match in snippet view article find links to article

production and trade of ornaments, arrowheads, and tools made from this volcanic glass. The site has been excavated 15 times from 1961 to 2015. The site is

Rangitoto Island (3,711 words) [view diff] exact match in snippet view article find links to article

ago. This was based on recognition of a number of horizons of tiny volcanic glass shards, seemingly erupted from Rangitoto, in sediment cores from Lake

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

does not crystallize at all, becoming glass. Rocks largely composed of volcanic glass include obsidian, scoria and pumice. Before and during volcanic eruptions

Hoshigatō obsidian mine site (258 words) [view diff] exact match in snippet view article find links to article

National Forest in the northeastern part of Shimosuwa. Obsidian, or "volcanic glass" was frequently used for stone tools and weapons in the Japanese Paleolithic

Reclus (volcano) (3,737 words) [view diff] exact match in snippet view article

Erich C.; Hargreaves, Geoffrey M.; Yates, Martin G. (8 October 2019). "Volcanic glass properties from 1459 C.E. volcanic event in South Pole ice core dismiss

Milos (4,328 words) [view diff] exact match in snippet view article find links to article

arrived by boat, beaching it in a suitable cove and cutting pieces of the volcanic glass from the quarries. The position of Milos, between mainland Greece and

Institute for Creation Research (3,901 words) [view diff] exact match in snippet view article find links to article

improperly conducted and "was unsuccessful in adequately separating the volcanic glass from the much older minerals". Another creationist opponent of ICR and

Māori culture (16,713 words) [view diff] exact match in snippet view article find links to article

stone-source areas included Mayor Island, Taupo and Kerikeri for obsidian (volcanic glass); prospectors soon found pounamu (greenstone or jade) and pakohe (argillite)

Mount Waesche (2,414 words) [view diff] exact match in snippet view article find links to article

AR; Froggatt, Paul C. (1 September 1992). "Composition of widespread volcanic glass in deep-sea sediments of the Southern Pacific Ocean: an Antarctic source

Richard L. Burger (921 words) [view diff] exact match in snippet view article find links to article

and used this analysis to describe the changing patterns of trade in volcanic glass in the pre-Hispanic Andes. This work on obsidian sourcing was based

Junji Ito (4,442 words) [view diff] exact match in snippet view article find links to article

a nearby village. Surprisingly, the village is covered in hair-like volcanic glass fibers, and all of it shines a bright gold. At night, when the villagers

Isle of Arran (6,901 words) [view diff] exact match in snippet view article find links to article

July 2009. Ballin, Torben Bjarke (2015). "Arran pitchstone (Scottish volcanic glass): New dating evidence". Journal of Lithic Studies. 2 (1): 5–16. doi:10

Jack Souther (2,783 words) [view diff] case mismatch in snippet view article find links to article

J. G. (1973). "Fission-track Dating of Late Tertiary and Quaternary Volcanic Glass from the Mount Edziza Volcano, British Columbia". Canadian Journal of

Easter Island (16,396 words) [view diff] exact match in snippet view article find links to article

dense stone used for toki and at least one of the moai. Obsidian, a volcanic glass with sharp edges used for sharp-edged implements such as Mataa and for

Lunar resources (8,731 words) [view diff] exact match in snippet view article find links to article

minerals and glass include ilmenite, olivine, pyroxene, impact glass, and volcanic glass. Various isotopes of oxygen are present on the Moon in the form of 16O

Chivay obsidian source (458 words) [view diff] exact match in snippet view article find links to article

Sarah O.; Glascock, Michael D.; Giesso, Martin (1997), "Source of volcanic glass for ancient Andean tools", Nature, vol. 376, no. 6624, pp. 449–450,

Apollo 17 (12,984 words) [view diff] exact match in snippet view article find links to article

astronauts discovered orange soil, which proved to be very small beads of volcanic glass formed over 3.5 billion years ago. This discovery caused great excitement

Lunar water (6,621 words) [view diff] exact match in snippet view article find links to article

lunar rock samples revealed evidence of water molecules trapped in volcanic glass beads. The first direct evidence of water vapor near the Moon was obtained

Foraminifera test (3,215 words) [view diff] exact match in snippet view article find links to article

agglutinated, as particle type preferentially includes sulfides, oxides, volcanic glass, and especially tests of smaller foraminifera. Xenophyophores 1.5 cm

Prehistory of Manila (5,078 words) [view diff] exact match in snippet view article find links to article

polished adze were found with worn-out flake tools mode of obsidian, or volcanic glass and tektites. In the San Juan River area, Dr. Beyer recognized what

Salton Buttes (3,690 words) [view diff] exact match in snippet view article find links to article

Obsidian, or volcanic glass, on Obsidian Butte. Obsidian quarried here was widely traded and used to make stone tools.

Hunga Tonga–Hunga Haʻapai (5,055 words) [view diff] case mismatch in snippet view article find links to article

the Subducting Plate in the Tonga-Kermadec Arc System Using Boron in Volcanic Glass." Geochimica et Cosmochimica Acta. 65:19 (October 2001). doi:10

2018 lower Puna eruption (6,052 words) [view diff] exact match in snippet view article find links to article

irritating "laze" (lava haze), made up of steam, hydrochloric acid, and volcanic glass particles produced by littoral explosions. Warnings regarding the hazard

Errett Callahan (2,358 words) [view diff] exact match in snippet view article find links to article

mankind. The technology to make scalpel blades out of smoky obsidian, a volcanic glass that allows for the sharpest blade production, was first developed by

History of mining in Sardinia (4,366 words) [view diff] exact match in snippet view article find links to article

most important Mediterranean centres for mining and processing of this volcanic glass in the area. As a matter of fact at least seventy processed hectares

Caconemobius fori (430 words) [view diff] exact match in snippet view article find links to article

up their habitat. They have been noted to look very similar to the volcanic glass ejecta Pele's tears which occur in their habitat. Caconemobius fori

History of Sardinia (6,236 words) [view diff] exact match in snippet view article find links to article

was found and worked for cutting tools and arrowheads. Even now the volcanic glass can be found on the sides of the mountain. The Neolithic began in Sardinia

Gai-As Formation (1,329 words) [view diff] exact match in snippet view article find links to article

contemporaneous volcanic activity. Early diagenetic formation of analcime from volcanic glass in an alkaline environment has been described. High alkalinity of the

Hand axe (12,509 words) [view diff] exact match in snippet view article find links to article

quartzites and other coarse rocks were used as well. Obsidian, natural volcanic glass, shatters easily and was rarely used. Most researchers think that handaxes

History of glass (5,540 words) [view diff] exact match in snippet view article find links to article

was even used in jewellery. Naturally occurring glass, especially the volcanic glass obsidian, has been used by many Stone Age societies across the globe

Tyrrhenian Basin (2,186 words) [view diff] exact match in snippet view article find links to article

Pliocene to Pleistocene hemipelagic marine sediment with intermittent volcanic glass. This sediment layer is believed to be deposited after the end of rifting

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

into the northern extent of Teewinot Lake. The resulting obsidian (volcanic glass) has been potassium-argon dated to 9 million years and was used by Native

Hoop hole (1,321 words) [view diff] exact match in snippet view article find links to article

product of the slag formed during the heating of the rock, similar to the volcanic glass obsidian, can be found on the grounds about the furnace. The Forest

Alkali–silica reaction (9,284 words) [view diff] exact match in snippet view article find links to article

volcanic rocks are particularly susceptible to ASR because they contain volcanic glass (obsidian) and should not be used as aggregate[citation needed]. The

Alkali–silica reaction (9,284 words) [view diff] exact match in snippet view article find links to article

volcanic rocks are particularly susceptible to ASR because they contain volcanic glass (obsidian) and should not be used as aggregate[citation needed]. The

Volcanic ash and aviation safety (1,647 words) [view diff] exact match in snippet view article find links to article

Volcanic ash is composed of fragments of rock, crystalline material, and volcanic glass. The glass component has the lowest melting temperature—lower than temperatures

Scientific information from the Mars Exploration Rover mission (4,502 words) [view diff] exact match in snippet view article find links to article

lapilli, little volcanic hailstones, one possibility. Two, droplets of volcanic glass or impact. We've looked at these things very carefully. Probably concretions

León Viejo (4,094 words) [view diff] exact match in snippet view article find links to article

artifacts is remarkable, as fragments of prismatic knives made of Obsidian (volcanic glass), reported chips of obsidian, chalcedony quartz, wildlife remains corresponding

Takalik Abaj (16,434 words) [view diff] exact match in snippet view article find links to article

sources such as Tajumulco, Ixtepeque and Pachuca. Obsidian is a natural volcanic glass that was used across Mesoamerica to make durable tools and weapons including

2022 Hunga Tonga–Hunga Haʻapai eruption and tsunami (18,155 words) [view diff] case mismatch in snippet view article find links to article

the Subducting Plate in the Tonga-Kermadec Arc System Using Boron in Volcanic Glass" Geochimica et Cosmochimica Acta 65:19 (October 2001) doi:10

1996 eruption of Gjálp (2,614 words) [view diff] exact match in snippet view article find links to article

17 cu mi). It is postulated that the original unconsolidated hyaloclastitic volcanic glass and tephra of the ridge could have by now undergone a process called

Suprathermal Ion Detector Experiment (967 words) [view diff] exact match in snippet view article find links to article

lunar rock samples revealed evidence of water molecules trapped in volcanic glass beads. A similar study showed how the Moon's solar wind–driven processes

List of craters on minor planets (149 words) [view diff] exact match in snippet view article find links to article

10°36′S 43°36′E / 10.6°S 43.6°E / -10.6; 43.6 (Obsidian) 0.51 2012 Volcanic glass used as a gemstone WGPSN Onyx 10°54′N 8°54′E / 10.9°N 8.9°E / 10

The Sunset Scene (995 words) [view diff] no match in snippet view article find links to article

One of these new techniques produced glass that resembled Lava or “volcanic” glass” (Bowl:51.121.13) The Metropolitan Museum of Arts even states, “Of

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

Central Andes, based on stable isotope paleoaltimetry of hydrated volcanic glass". Geology. 42 (5): 447–450. Bibcode:2014Geo....42..447C. doi:10.1130/G35239

Critical Role campaign one (4,004 words) [view diff] exact match in snippet view article find links to article

Orcus. They rest, and track Grog's scent towards a pit filled with volcanic glass shards. Duergar below are fighting some abomination, and the party get

Asish Basu (2,114 words) [view diff] exact match in snippet view article find links to article

years ago. Basu determined multiple trace element concentrations in volcanic glass, dredged from the Mid-Atlantic Ridges, from near the equatorial mid-Atlantic

Crkvine (Stubline) (5,534 words) [view diff] exact match in snippet view article

to trade with distant settlements, up to 500 km (310 mi) away. The volcanic glass obsidian, originating from Hungary and Slovakia has been found, so as