The textural term for an igneous rock possessing a few large crystals surrounded

Question

The textural term for an igneous rock possessing a few large crystals surrounded by much smaller crystals: aphanitic phaneritic porphyritic vesicular glassy Clay is one of the most common minerals found in the sedimentary rocks. It is derived from breaking up of quartz grains hydrolysis of feldspar grains in igneous rocks oxidation of ferromagnesian minerals dissolution of calcite minerals All the fine (small) sediment sizes such clay and silt are collectively called: sand mud gravel pebble Intermediate (Andesitic) igneous rocks are formed primarily at plate -tectonic settings, whereas mafic (basaltic) igneous rocks are associated with plate -tectonic settings. divergent; transform subduction-zone; divergent divergent; subduction -zone transform; divergent What is the name of the foliated metamorphic rock formed in the active fault and shear zones? slate phyllite mylonite migmatite

Explanation / Answer

24) porphyritic

Porphyritic texture is common when magma cool at various depths. Thearger crystals in porphyritic texture are called phenocrystals and small crystal are called groundmass

25) B

Clays are Fine grained particles with diameters less than 1/256 mm. And Rae mostly made-up of feldspar grains.

Clays can be produced from the weathering of preexisting igneous rocks

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.