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Flashcards in EXAM TWO I Deck (10):
1

Intraplate volcanism is usually associated with

mantle plume

2

Extrusive igneous rocks can be quiet or explosive, depending on _____ of the magma

viscosity

3

______ are massive, intrusive bodies greater than 100 km which frequently form cores of mountains

batholiths

4

A ______ is a structure that results from emplacement and crystallization of magma beneath Earth's surface:

Pluton

5

The Sierra Nevada Range is an example of a _______.

Batholith

6

A dike is a ________.

massive tabular or irregular body of igneous rock which cuts across layers of bedding in country rock

7

A tabular body of igneous rock which squeezed in between layering of sedimentary rocks is a ______

Sill

8

A _____ is a steep-walled depression (1-1.6 km diameter) at summit of volcano:

Crater

9

A _______ is a summit depression greater than 1. 6 km diameter produced by collapse of summit following a massive eruption:

Caldera

10

Highly explosive magmas are controlled by wish of the following?

high silica content, high water content and low temperatures