Which of the Following Igneous Rocks Exhibit Aphanitic Texture

Aphanitic AY-fa-NIT-ic rocks have mineral grains that are mostly too small to be seen with the naked eye or a hand lens like this rhyolite. Most lava crystallizes to form igneous rocks with phaneritic coarse-grained textures.

The Texture Of Igneous Rocks Igneous Rock Igneous Geology

Phaneritic vesicular aphanitic porphyritic poikilitic glassy pyroclastic equigranular and spinifex.

. Visible quartz and potassium feldspar grains are the main constituents in a. Pumice _____ is named for a prominent volcanic mountain range in western South America. A granite B gabbro C basalt D rhyolite 13 Which of the following igneous rocks has a pyroclastic texture.

Question 7 Which of the following is a plutonic texture that indicates a slow rate of cooling. Rhyolitic tuff _____ is a volcanic rock that is extremely vesicular and glassy. An aphanitic texture is developed when magma is erupted at the Earths surface and cools too quickly for large crystals to grow.

Which of the following igneous rocks has a pyroclastic texture. 8 A porphyritic texture includes two different sizes of mineral grains the phenocrysts and the vesicles. There are nine main types of igneous rock textures.

Examples would be basalt and rhyolite. Each kind of texture has a variety of different characteristics that make them unique. Experts are tested by Chegg as specialists in their subject area.

View the full answer. In a porphyritic volcanic rock which mineral grains are the last to crystallize. What is the dominant lava erupted from volcanoes on Hawaii and Iceland.

Basalt is the aphanitic or fine-grained equivalent of gabbro. 1 gabbro 2 basalt 3 andesite 4 granite 5 komatiite The correct answer is. Extrusive or volcanic rocks crystallize from lava at the earths surface.

We review their content and use your feedback to keep the quality high. Which of the following igneous rocks exhibit aphanitic texture. Which of the following igneous rocks exhibit coarse-grained texture.

Eutaxitic applies only to welded ignimbrites - This texture describes a rock with a planar fabric in which flattened pumice clasts are surrounded by a fine grained groundmass of sintered ash. 9 Olivine is an important mineral in peridotites and other ultramafic rocks. Normally extrusive igneous rocks exhibit an aphanitic texture.

A granite gabbro B andesite rhyolite C andesite diorite D rhyolite gabbro 12 Visible quartz and potassium feldspar grains are the main constituents in a. Which of the following pairs of igneous rocks exhibit aphanitic texture. Basalt is another igneous rock.

100 1 rating volcanic rock- are aphanitic ie fine-grained plutonic rocks-phaneritic-ie. Which of the following igneous rocks exhibit aphanitic texture. This texture is exhibited by some volcanic rocks.

C ultramafic composition D phaneritic texture 11 Which of the following igneous rocks exhibit aphanitic texture. 10 The process of magmatic differentiation can generate residual more felsic magmas from maficmagmas such as basalt. What term describes the sizes shapes and.

Which of the following igenous rocks exhibit aphanitic texture. Granite Hide Check my answer. Question 6 Which one of the following rock types contains the greatest amount of quartz.

Igneous Textures The texture of a rock is a result of various processes that controlled the rocks genesis and along with mineralogy and chemical composition provides information that we may use to interpret the rocks origin and history Table 31 at end of Chapter 3 provides a glossary of common igneous rock textures. How are basalt and granite different in their Orgin texture and mineral composition and how. Coarse-grained 39-rhyolite C- granite 40-Gabbro B-basalt 41- and.

Which of the following igneous rocks has a pyroclastic texture meaning it was formed from a glowing avalanche. In an igneous rock with a phaneritic texture the mineral grains are visible to the unaided eye. Visible quartz and potassium feldspar grains are the main constituents in.

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