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Science Ch 4 Rocks Study Guide

Terms in this set (25)

intrusive igneous rock
rock formed from the cooling and solidification of magma beneath Earth's surface
foliated rocks
A metamorphic rock that has mineral grains which line up in parallel layers
Chemical Sedimentary Rocks
Sedimentary rock that forms when minerals precipitate from a solution or settle from a suspension.
extrusive igneous rock
rock that forms from the cooling and solidification of lava at Earth's surface
sedimentary rock formation
Sediments being pressed or cemented, sediments forming from solution, water evaporating leaving crystals behind.
Rock cycle processes
Weathering, erosion, sedimentation, compaction, cooling, melting
Sedimentary rocks can be found where?
deserts, rivers, valleys
Sedimentary limestone can change to what with metamorphoses?
Marble
What is a conglomerate rock?
A rock with large rounded clasts that have been polished
What is contact metamorphism?
using magma to turn existing rock into metamorphic rock
How can sedimentary rock become sediments again?
Weathering and erosion
Classification of metamorphic rocks includes what?
Whether they are foliated or non-foliated
What type of sediment particles have worn surfaces and rounded corners?
Clastic sediment particles
What characteristic determines the category of metamorphic rocks?
Texture
Basaltic igneous rocks are
rich in iron and magnesium
Three types of rocks
igneous, sedimentary, metamorphic
Gneiss
Metamorphic
rock salt
Sedimentary
rock
A naturally occurring solid mixture of one or more minerals or grains
limestone
Sedimentary
Clastic
A sedimentary rock composed of weathered fragments of older rock.
sediment
pieces of solid material deposited on the surface of Earth
regional metamorphism
produced when high temperature and pressure affect large areas of Earth's crust
rock cycle
the continuous changing and remaking of rocks
What rock is formed by deposition of igneous rock?
Sedimentary
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