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Details

Rock Identificaton
Igneous, Sedimentary, Metamorphic
38
Geology
Undergraduate 1
04/25/2013

Additional Geology Flashcards

 


 

Cards

Term

[image]

Peridiotite

Definition

Igneous Rock

Phaneritic Texture

Ultra-mafic

 

Green tint (Olivine)

 

Sugary look

Term

[image]

Granite

Definition

Igneous Rock

Phaneritic Texture

Felsic Composition

 

Made of pinks, whites and blacks (K-spar)

 

Don't confuse with Gabbro

Term

[image]

Basalt

Definition

Igneous Rock

Aphantic Texture

Mafic Composition

 

"Just a sad little black rock"

Term

[image]

Diorite

Definition

Igenous Rock

Phaneritic Texture

Intermediate Composition

 

Salt and Pepper

Term

[image]

Andesite

Definition

Igneous Rock

Porphyritic Texture

Intermediate Composition

 

Greenish tint

 

Named after Andes mountains

Term

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Gabbro

Definition

Igneous Rock

Phaneritic Texture

Intermediate Composition

 

Looks like a black countertop.

"black granite"

Term

[image]

Obsidian

Definition

Igneous Rock

Glassy Texture

Mafic Composition

 

Glassy, smooth.

Can be other colors

Term

[image]

Scoria

Definition

Igneous

Porphyritic

Mafic

 

Comes in reds and browns

 

Looks like a moon rock

Term

[image]

Pumice

Definition

Igneous

Porphyritic

Felsic

 

Light colored, pysically light

Term

[image]

Volcanic Breccia

Definition

Igneous

Fragmental?

Flesic-Intermediate

 

 

Term

[image]

Vesicular Basalt

Definition

Igneous

Vesicular

Mafic

 

It's basalt. With holes.

Term

[image]

Porphyritic Rhyolite

Definition

Igenous

Porphyritic

Felsic

 

Light-weight

Small black flecks

Term

[image]

Slate

Definition

Metamorphic

Foliated

Parents: Claystone, Shale

 

Like shale, but with larger chunks

Term

[image]

Phyllite

Definition

Metamorphic

Foliated

Parents: Claystone, Shale, Slate

 

Looks like eyeliner.

Lab samples are greenish

Term

[image]

Schist

Definition

Metamorphic

Foliated

(Claystone, Shale, Slate, Phyllite)

 

Scaly-looking

Can include Garnets and Micas in flakes

Term

[image]

Gneiss

Definition

Metamorphic

Foliated

(Claystone, Shale, Slate, Phyllite, Schist, Granite)

 

Trash-can rock

 

Bands of dark and light

 

Lab samples have thin dark bands

Term

[image]

Quartzite

Definition

Metamorphic

Nonfoliated

(Sandstone)

 

Looks kinda flaky

Grayish with some browns and reds

Term

[image]

Marble

Definition

Metamorphic

Nonfoliated

(Limestone)

 

Reacts to HCL

 

Can have banding

 

Is multicolored, but primarliy light

Term

[image]

Serpentine

Definition

Metamorphic

Nonfoliated

(Peridiotite, Basalt, Gabbro)

 

Greenish tint

 

Some banding possible

Term

[image]

Anthrocite

Definition

Metamorphic

Nonfoliated 

(Coal)

 

Looks like lead

Shiny and dark

Term

[image]

Hornfels

Definition

Metamorphic

Nonfoliated

(Any)

 

Ugly black w/ Brown circular things

Term

[image]

Metaconglomerate

Definition

Metamorphic

Nonfoliated

(Conglomerate)

 

Breaks across grains, not around

Term

[image]

Chert

Definition

Sedimentary

Chemical

 

 

No visible grains, maybe a few inlaid flecks

 

Almost glassy, light colored

Term

[image]

Claystone

Definition

Sedimentary 

Detrital

 

Blobby

Very soft

Term

[image]

Conglomerate

Definition

Sedimentary

Detrital

 

Large grains in lithified rock

Rounded grains

Term

[image]

Arkose

Definition

Sedimentary

Detrital

 

Feels like sandpaper

Rounded rock pieces inside of a reddish rock

Term

[image]

Sandstone

Definition

Sedimentary

Detrital

 

Cubed, sand pieces

Very small grains

Can be white, yellow, or red

Term

[image]

Shale

Definition

Sedimentary

Biochemical

 

Breaks in layers

Very small grains, black

Term

[image]

Micrite

Definition

Sedimentary

Biochemical

 

Reacts to HCL

No visible grains

Caramel-colored

Microfossils

Term

[image]

Fossiliferous Limestone

Definition

Sedimentary

Biochemical

 

Reacts to HCL

Grayish with large fossil pieces

Term

[image]

Bituminous Coal

Definition

Sedimentary

Biochemical

 

Black, shiny coal

layered

Term

[image]

Chalk

Definition

Sedimentary

Biochemical

 

Reacts to HCL

Looks like chalk??

Very soft and light

Term

[image]

Breccia

Definition

Sedementary

Detrital

 

Large, angular pieces lithified

(Looks like a snickers bar in lab sample)

Term

[image]

Siltstone

Definition

Sedimentary

Detrital

 

Small grained, breaks in cubes

gritty taste

grayish with whites

Term

[image]

Rock Salt

Definition

Sedimentary

Chemical

 

Looks like salt

tastes like salt

is salt

Term

[image]

Travertine

Definition

Sedimentary

Chemical

 

This is the one that looked like a stalagtite

Banding

Might react to HCL

Term

[image]

Coquina

Definition

Sedimentary

Biochemical

 

Reacts to acid (doesn't matter though, because...)

Oatmeal

Oatmeal

Yucky oatmeal

Term

[image]

Lignite

Definition

Sedimentary

Biochemical

 

Dull coal

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