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igneous metamorphic and sedimentary rock
Can you name the igneous metamorphic and sedimentary rock?
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extrusive, plagioclase rich, hornblend, pyroxene, biotite
extrusive (mostly), plagioclase, pyroxene, similar in composition to gabbro, dark color
intrusive, volcanic, composition intermediate between andesite and rhyolite (sometimes blueish color)
course grained, intrusive, feldspar, pyroxene, hornblend, sometimes quartz (usually black and white)
course grained, intrusive, plagioclase, augite, abundant in oceanic crust
intrusive, quartz, feldspar, plutonic
volcanic glass (rapid cooling), composition similar to rhyolite and granite
very couse grained, intrusive, formed at margins of magma chamber, contains left-over minerals from melt
course grained, intrusive, mantle rock, olivine
extrusive, porus (low density), usually light colored, associated with volcanism
fine-grained, extrusive, light colored, felsic, similar in composition to granite
extrusive, porus, (lava rock)
extrusive, lithified volcanic ash from pyroclastic flows
extremely deformed rocks that represent the base of eroded mountain chains, typically within Precambrian cratonic blocks
non-foliated, schistose (flaky) amphibole, plagioclase, salt and pepper look, parent material: varies
foliated (banded), parent material: schist
non-foliated, fine-grained, produced by contact metamorphism, parent material: varies
non-foliated, calcium carbonate, parent material: limestone
foliated, mostly mica, intermediate between slate and schist, parent material: shale or pelite (slate or mudstone)
non-foliated, parent material: sandstone
foliated, usually contains mica, intermediate metamorphic grade between phillite and gneiss, parent material: slate
foliated, low-grade, quartz, muscovite, illite, parent material: shale, mudstone
clastic, angular clasts
microcrystaline SiO2, conchoidal fracture, (flint)
organic, made from peat -> lignite -> butiminous -> anthracite
clastic, rounded clasts
hematite, magnetite, most formed before 1.8 bya with the biological advent of O2 from photosynthesis
CaCO3, marine, from organic carbonate shells, chalk (ooze), coquina (shells), lithographic (dense), fossiliferous, oolitic (concentric precipitation), travertine (evaporative precipitation), tufa (hot springs)
evaporite of salinated water
clastic, grain size: 1/16-2mm, mostly quartz
clastic, fine-grained, from fine silt and clay (mud)
clastic, from courser silt
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