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a compositional group of igneous rocks indicating that the rock contains substantial dark silicate minerals and calsiumrich plagioclase feldspar. a compositional group of igneous rocks indicating that the rock contains substantial dark silicate minerals and calsiumrich plagioclase feldspar.
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What extrusive igneous rock has a mafic composition and a glassy texture?
Basaltic glass
What igneous rocks have a mineral composition between that of granitic and basaltic rocks?
Andesitic igneous rock.
What is the average composition of rocks comprising a large composite cone or stratovolcano?
The average composition of rocks comprising a large composite cone or stratovolcano is andesitic magma. It is the intermediate type between basaltic and dacitic magma.
What are the 3 types of magma?
basaltic magma ,Andesitic magma and Rhyolitic magma
Why is it that pahoehoe and AA lava are more frequent in shield volcanoes than in composite volcanoes?
Aa and pahoehoe lavas are both basaltic in composition. The lava from composite volcanoes is likely to be granitic.
Where do most rocks have a basaltic composition?
on the ocean floor
Where do rocks have a basaltic composition?
Oceanic crust is made of basaltic rock. The rocks formed from hotspot volcano lavas are also often basaltic too.
What is magma composition of Mount Tambora?
It is that it has high silica content
Where do most rocks have basaltic composition?
Most rocks with basaltic composition are found in volcanic regions, such as volcanic islands and mid-oceanic ridges. They are also commonly found in continental flood basalt provinces, which are large expanses of basaltic lava flows that cover extensive areas of land. Basaltic rocks can sometimes be found in other settings as well, such as in certain types of metamorphic rocks.
What type of magma does Mt Etna have?
The composition of Mt. Etna is basaltic.
What are the tectonic settings associated with the formation of basaltic composition magmas?
Basaltic composition magmas occur in oceanic hotspots where a mantle plume interacts with oceanic lithosphere.
Are basalt rocks pyroclastic?
Usually not. Although it is possible to have pyroclastic material with a basaltic composition, most basaltic rocks are from simple lava flows.
What is Sunset Crater's magma composition?
Sunset Crater was fed by basaltic magma.
What extrusive igneous rock has a mafic composition and a glassy texture?
Basaltic glass
What is the composition of magma of popocatepetl?
A mixture of dacite (65wt% SiO2) and basaltic andesite (53wt% SiO2).
What is the magma composition of mount Akutan?
It has varied throughout it's eruptive history from basalt to basaltic andesite.
What igneous rocks have a mineral composition between that of granitic and basaltic rocks?
Andesitic igneous rock.
