How To Use Andesite In A Sentence
-
LAV-138 was drilled on Section 1300NE and intersected alternating granodiorite, tonalite and andesite.
Marketwire - Breaking News Releases
-
The Miocene volcanic rocks are mostly andesite, basalt, and pyroclastic rocks.
Santa Monica Mountains (Bailey)
-
LAV-139 was drilled on Section 900NE and intersected mixed andesite, granodiorite and tonalite.
Marketwire - Breaking News Releases
-
Two series of igneous rocks have been found: tholeiitic, ranging from picrite basalt to basaltic andesite (to rhyodacites); mildly alkaline, with a more restricted compositional range (picrite basalts and basalts).
-
These are invariably volcanic rocks, including rhyolites, andesites, basalts, and their explosive equivalents, pyroclastic rocks.
-
A third type of magma, called andesite, named after the Andes Mountains where it is often found, is composed of a mixture of both felsic and mafic magma.
PhysOrg.com - latest science and technology news stories
-
They are lighter in colour and lower in density than basalts or andesites, and contain fewer dark minerals.
-
We show that this occurred because of limited melting of the asteroid, and thus illustrate that the formation of andesite crust has occurred in our solar system by processes other than plate tectonics, which is the generally accepted process that created the crust of Earth.
Space News From SpaceDaily.Com
-
A basalt flow can advance over a kilometre of flat ground in a matter of hours; an andesite may take months.
-
Basalt magma typically generates very little ash compared to other types (andesite, dacite, and rhyolite).
Volcanic ash hazards and ways to minimize them
-
These small crystals are known as phenocrysts and are one of the most characteristic features of andesites.
-
p 239 active volcanoes is always manifested in the chain of the Andes by the appearance of certain rocks (as dolerite, melaphyre, trachyte, andesite, and dioritic porphyry), which divide the so-called primitive rocks, the transition slates and sandstones, and the stratified formations. the constant recurrence of this phenomenon convinced me long since that these sporadic rocks were the seat of volcanic phenomena, and were connected with volcanic eruptions.
COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1
-
Another item of interest is that the magmas which feed the Hawaiian arc are pretty much exclusively basaltic, as would be expected from their deep-mantle origin, whereas the yellowstone magmas are of the granite/rhyolite/andesite (aka "crustal") varieties - which would appear anomalous - but at any rate, I wonder do they contain He and Ar in enriched amounts? report abuse
PhysOrg.com - latest science and technology news stories
-
Peck used locally quarried andesite, a brittle stone that fractures into sharp, angular shapes and has a sparkly surface.
-
Typically occurring in Virginia are basalt and metabasalt of the Catoctin Formation, granite and granodiorite of the Virginia Blue Ridge Complex, and andesite, tuft, and greenstone of the Swift Run Formation.
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA)
-
Made from a single slab of andesite weighing at least 10 tons, this monolith is carved in the form of a doorway with niches on either side.
-
The volcanic necks are composed of basic rocks, basalt, basalt breccia, or andesite, showing considerable variation in mineralogy, texture, and structure within the same neck.
-
In contrast, in the section south of the turbidites the lavas dip steeply northwards, and basalts are overlain by andesites.
-
Basalt magma typically generates very little ash compared to other types (andesite, dacite, and rhyolite).
Volcanic ash hazards and ways to minimize them
-
The Volcanic Mid-Elevation Forests ecoregion occurs at elevations of about 7500 to 10,000 feet and is composed of igneous rocks of andesite and basalt.
Ecoregions of New Mexico (EPA)
-
Each massif consists of a core of andésite lava domes surrounded by aprons of pyroclastic deposits and volcanogenic sediments.
-
The volcanic strata consist of sheet-like flows of andesite, dacite, basalts, and trachybasalts that are interbedded with agglomerates and tuffs.
-
Typically occurring in Virginia are basalt and metabasalt of the Catoctin Formation, granite and granodiorite of the Virginia Blue Ridge Complex, and andesite, tuft, and greenstone of the Swift Run Formation.
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA)
-
Small lithic fragments comprise quartzite, gneiss and ubiquitous andesite.
-
The main slivers of Devonian rocks found within the fault zone in the Rhynie area are sandstones and andesite in the Rhyme block and the Longcroft Tuffs in the Windyfield block.
-
There, Early to Middle Jurassic marine black shales and carbonate rocks of Pampa de Agnia and Tepuel are interbedded with andesite lava flows and pyroclastic rocks, and silicic volcanic rocks coeval with Gondwana breakup.
-
The clasts range from angular to subrounded and show a weak preferred orientation when elongate; they include micaceous siltstone, fine-grained sandstone, tuffaceous rock, andesite and medium-grained diorite.
-
Nevado del Ruiz volcano is an andesite stratovolcano located in the northern Andes of Colombia.
-
The belt comprises subalkaline andesites, trachyandesites, dacites, rhyolites, trachyrhyolites, and granodiorites, granites, granosyenites and monzonites, and developed along an active continental margin.
-
Some rocks have basaltic compositions similar to the well-studied meteorites thought to have come from Mars, but other rocks are more like the volcanic rock andesite.
-
St. Lucia, and Martinique are predominantly composed of acid andesite and dacitic rocks.
Grenada
-
(FeCO3), used as a pigment, and also found in the Kirtland shale; and various metamorphic and igneous rocks (such as andesite, schist, gabbro, slate, and olivine), which could have been picked up in the river
Tseh So, a Small House Ruin, Chaco Canyon, New Mexico :
-
Andesite and diorite are intermediate igneous rocks that have a chemistry between mafic and felsic (silica amounts between 53 to 65%).
Igneous rock
-
The rock assemblages of the Bayinbuluke formation are mainly alkaline basalt - thick andesite - alkaline rhyolite.
-
The volcanic strata consist of sheet-like flows of andesite, dacite, basalts, and trachybasalts that are interbedded with agglomerates and tuffs.
-
Floral mapping of the nominated area recognizes 5 broad communities including the dolomite grasslands, andesite mountain bushveld, witwatersrand mountain bushveld, VD granite grassland and the riverine bushland.
Vredefort Dome, South Africa
-
The volcanic strata consist of sheet-like flows of andesite, dacite, basalts, and trachybasalts that are interbedded with agglomerates and tuffs.
-
The clasts range from angular to subrounded and show a weak preferred orientation when elongate; they include micaceous siltstone, fine-grained sandstone, tuffaceous rock, andesite and medium-grained diorite.
-
They range from bytownite - labradorite in basalts and gabbros, andesine - oligoclase in diorites and andesites to albite in granites and rhyolites.
-
Both the sandstone and andesite show strong quartz and chert veining and carry disseminated pyrite.
-
The rock assemblages of the Bayinbuluke formation are mainly alkaline basalt - thick andesite - alkaline rhyolite.
-
Further up section the geology is dominated by a succession of unmetamorphosed but strongly fractured and veined blocky andesites, basalts and tuffaceous rocks.
-
They are lighter in colour and lower in density than basalts or andesites, and contain fewer dark minerals.
-
They range from bytownite - labradorite in basalts and gabbros, andesine - oligoclase in diorites and andesites to albite in granites and rhyolites.
-
Miocene basalt, andesite, pyroclastic, and marine sedimentary rocks predominate in this subsection.
Northern Channel Islands (Bailey)
-
The western Cascades are older and more eroded than the lava plateau and prominent snow-covered cones of the high Cascades (Ecoregions 4c and 4d); they are composed of dark basalt in contrast to the gray andesite of the high Cascades.
Ecoregions of Oregon (EPA)
-
They are marked by eruptions of cooler, stickier lavas such as andesite, dacite and rhyolite.
-
Floral mapping of the nominated area recognizes 5 broad communities including the dolomite grasslands, andesite mountain bushveld, witwatersrand mountain bushveld, VD granite grassland and the riverine bushland.
Vredefort Dome, South Africa
-
She used locally quarried andesite, a brittle stone that fractures into sharp, angular shapes and has a sparkly surface.
-
The fault places massive fractured greenstones over relatively undeformed feldspar andesite porphyry.
-
LAV-140 was drilled on Section 800NE and intersected alternating andesite and tonalite containing variable chalcopyrite and pyrite.
Marketwire - Breaking News Releases
