Rocks And Minerals Flashcards

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0
Q

How are igneous rocks formed? (Pg 6 esrt)

A

Solidification of magma

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1
Q

Properties of minerals (pg 16 esrt)

A

Composition: elements it’s composed of

Use(s): what it’s used as

Distinguishing characteristics: traits of the mineral that tells it apart from the others

Fracture: does not break into flat, even layers

Cleavage: when it can break into flat layers

Luster: shine/ glittery like

Hardness: how hard the element is

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2
Q

How are metamorphic rocks formed? (Pg 6 esrt)

A

Heat or pressure

Can cause banding

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3
Q

How are sedimentary rocks formed? (Pg 6 esrt)

A

Deposition/burial —> compaction/cementation

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4
Q

Felsic

A

Rich in Si, Al

Lighter color

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5
Q

Mafic

A

Rich I’m Fe, Mg

Darker color

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6
Q

Extrusive rock (volcanic)

A

Made outside of a volcano

Glassy , fine texture (can be vesicular)

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7
Q

Intrusive (plutonic)

A

Made inside of a volcano

Touch texture, non vesicular

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8
Q

Banding

A

Caused by heat a pressure; you can see the waves of color and layers compressed

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9
Q

Mineral alignment

A

Minerals are aligned

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10
Q

Regional

A

Pressure

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11
Q

Contact

A

Heat

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12
Q

Foliated

A

No mineral alignment or banding

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13
Q

Glacial striations

A

scratches or grooves caused by rocks underneath moving glaciers

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14
Q

Glacial erratics

A

When the size and type of rock is different from where it tests

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15
Q

Faulting

A

A fracture on a rock or surface caused by the moving of the earth

16
Q

Bedding

A

At one time the bedrock was made of sedimentary (before metamorphism)