Igneous Rock Sedimentary Rock Metamorphic Rock Terms Grab Bag

Rock that forms when magma cools and hardens Answer

Igneous Rock Home

Igneous rock that is rich in feldspars and silica and generally light in color Answer

Felsic Rock Home

Zones of weakness in an ingneous rock structure Answer

Joints Home

Batholiths, laccoliths, and sills are all examples of this______ Answer

Intrusive igneous intrusions Home

Igneous rock that is rich in Fe and Mg and is generally dark in color Answer

Mafic Home

Sedimentary rock that is made up of rock fragments that become compacted or cemented together Answer

Home Clastic Rock

Layers and bed of sedimentary rock are examples of ________ Answer

Stratification Home

This structure forms when finer sediments settle on the bottom and large grains settle on the top Answer

Reverse grading Home

Lumps that have compositions different from the main body of rock Answer

Concretions Home

Forms when minerals precipitate from a solution or settle from a suspension Answer

Home. Chemical sedimentary Rock

Rocks that forms when existing rock is altered by forces of heat, pressure or chemical processes Answer

Metamorphic Home

Changes in temperature and pressure over a large area Answer

Regional metamorphism Home

This texture results when extreme pressure causes minerals in Metamorphic rock to realign, or when minerals separate our into dark and light bands Answer

Foliated Home

An example of a nonfoliated rock used as a building or sculpting material Answer

Marble Home

Rock texture in which minerals are arranged in planes or bands is called ________ Answer

Foliation Home

Answer Rocks from magma that cools deep inside Earth’s crust

Intrusive igneous Home

“lake of rock” when magma pushes the overlying rock layers into a dome Answer

Laccolith Home

Formations that spread over 100 km squared Answer

Batholiths Home

Process in which sediments are glued together by minerals deposited in water Answer

Home Cementation

Answer Rocks change from one type to another as a result of geologic forces and processes that are part of the ______

The Rock Cycle Home

A type of rock with vesicular texture Answer

Pumice Home

Texture with a mixture of large and small crystals Answer

Porphyritic Home

Forms from the remains of plants and animals Answer

Organic Sedimentary Home

Granite has large, well- developed crystals giving it what kind of texture? Answer

Coarse-grained texture Home

When magma forms by partial melting, which of the following mineral pairs melt first? Answer

Quartz/ feldspar Home