Tabular Sills and Lava Flows Often Have Regular Geometric Grids

Q23: Mafic rocks like basalt and gabbro_ .<br>A)

Q24: Which of the following igneous rocks usually

Q25: Plutonic rocks are emplaced at depth yet

Q26: The aphanitic equivalent of diorite is<br>A) basalt<br>B)

Q29: What are vesicles?<br>A) open voids in an

Q30: What phenocryst minerals would you expect to

Q31: What do pumice and obsidian have in

Q32: The mechanism of selectively removing the minerals

Q33: When magma cools and consolidates without growth

Q38: A(n)_texture would be most unlikely to occur