Exam 3: Rocks

As granitic magma rises through the Earth's crust, some of it may erupt from a volcano to form __________.

__________ __________ is the older igneous and metamorphic rock underlying sedimentary rock.

The process by which rocks and minerals change in response to changing temperature, pressure, and/or chemical composition within the crust is __________.

Obsidian is volcanic glass where the atoms are arranged in a random chaotic pattern.

Which of these pairs of igneous rocks is mismatched?

The most common clastic sedimentary rocks are shale, siltstone, and sandstone.

Hydrothermal solutions scavenge and concentrate metals from crustal rock.

The most common cements in sedimentary rocks are calcite, quartz, and iron oxides.

Igneous rocks form by:

The most abundant igneous rock in continental crust is:

Bioclastic sediment consists of:

Quartzite is metamorphosed quartz sandstone.

Extrusive igneous rocks form when:

The original rock before changes by weathering, metamorphism, or other geological processes is called:

The interaction between limestone and the carbon dioxide in the atmosphere and that dissolved in the oceans are an important determinant to global climate.

Most of the oceanic crust is made up of __________, whereas most of the continental crust is composed of __________.

Intrusive igneous rocks form when magma solidifies:

Volcanic rock forms when magma solidifies within the Earth's crust.

The crystals in granite cannot be seen with the naked eye.

The weight of overlying sediment on sedimentary grains causes their __________.