Igneous Rocks
How do igneous rocks form?
Crystallization (cooling/hardening) of molten material
How do metamorphic rocks form?
Temperature and/or pressure can change igneous, sedimentary, or other metamorphic rocks
What is sediment?
loose materials such as rock fragments, mineral grains, & bits of shells that have been moved by wind, water, ice, or gravity.
What kind of rock is granet
Igneous
Intrusive (formed below earths surface)
Extrusive (formed at earths surface)
What is the definition of a parent rock?
The original rock before metamorphism
What are the types of sedimentary rock?
►Detrital (Clastic)
►Chemical
Organic (Biochemical
What kind of rock is marble?
metamorphic
What are the four textures an igneous rock can have?
vesicular
glassy
aphanitic
phaneritic
What type of rock is a parent rock?
can be igneous, sedimentary, or even metamorphic
How are derital sedimentary rocks formed?
►Sedimentary rocks made up of pieces of other rocks
►
►Weather/erode rocksà deposit sediment à compact small sediment (lithification) = solid detrital rock
►Weather/erode rocks à deposit sediment à cement large sediment (lithification) = solid detrital rock
What kind of rock is Slate?
Metamorphic
How are andesitic rocks composed?
Combination of basaltic and granitic rocks
Many volcanoes around the rim of the Pacific Ocean produce andesitic lava
How is marble formed?
Limestone and high temperature
How are chemical rocks formed?
►Form when dissolved minerals come out of solution
Stiltstone
Sedimentary
What kind of rock are the presidents of Mt. Rushmore made from?
Granite
What are the textures of metamorphic rocks?
Foliated (banded)àmineral grains are flattened and line up in parallel layers (mineral bands)
Non-foliatedà mineral grains grow and rearrange, but don’t form bands (grainy or smooth)
What are sedimentary rock features?
►Stratification (layers)
►Fossils
►Ripple Marks
►Geodes
Conglomerate
Sedimentary