Sentences with phrase «igneous basalt»

Not exact matches

Basalt magmas form by decompression melting of peridotite in the Earth's mantle, a process discussed in the entry for igneous rocks.

The textbook explanation is that the Moho draws the line between the crust and the mantle: a demarcation between familiar igneous surface rocks - such as granites, basalts and gabbros - and those of the interior peridotites.

Earth and Venus should have had sufficient inner heat to remelt some of its surface basalt to form a range of igneous rocks called granites or «granitoids,» which are coarse - grained blends of lighter minerals (including quartz, feldspar, and mica that are common in Earth's crust but rarer in the smaller planetsimals).

Marble (from limestone, a sedimentary rock) and granulite (from basalt, an igneous rock) are examples of metamorphic rocks.

Obsidian, basalt, and granite are all examples of igneous rocks.

The latter may also occur in igneous rocks, such as in the caves on Santa Cruz Island, California, where waves have attacked the contact between the andesitic basalt and the agglomerate.