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Oceanography > Exam 2 (Geology) > Flashcards

Exam 2 (Geology) Flashcards

0
Q

What is Stratigraphy?

A

The layers of the earth/rocks

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1
Q

Approximately How old is the Earth?

A

4.5 Billion years old.

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2
Q

What is Igneous Rock?

A

Rock that comes from Magma

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3
Q

What is Intrusive Igneous?

A

Rocks that cool slowly. Big Crystals

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4
Q

What are three examples of Intrusive Igneous Rocks?

A

Granite, Diorite, Gabro

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5
Q

What is created in Tectonic Processes?

A

Mountains?

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6
Q

What is Extrusive Igneous?

A

Igneous rocks that cooled quickly, small/no crystals

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7
Q

What is the most common Intrusive Igneous Rock?

A

Basalt

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8
Q

What is the Hawaiian Word for Ropey Lava?

A

Pa hoe hoe (paw-ah-oy-oy)

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9
Q

What is the Hawaiian word for Blocky/Chunky Lava?

A

AA (Ah-Ah)

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10
Q

What is a Rock?

A

A collection of minerals.

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11
Q

What is a mineral?

A

A collection of elements

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12
Q

What is an element?

A

A collection of atoms.

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13
Q

What is unique about Vesicular Basalt?

A

It is porous from VOGs

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14
Q

What are VOGs?

A

Volcanic Out Gassing

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15
Q

What is Obsidian?

A

Volcanic Glass, full of silicates

16
Q

What is Pumice?

A

Spun Volcanic Glass

17
Q

What are Sedimentary Rocks named for?

A

Particle Size

18
Q

How are Sedimentary Rocks layered?

A

Oldest sediments on the bottom, newest on the top.

19
Q

What is Coqina made of?

A

Seashells and Sandstone

20
Q

What is Conglamerate made of?

A

Rounded Pebbles mixed with sand and mud

21
Q

What is Travertine?

A

Layered Rock

22
Q

What is Limestone made of?

A

Fossilized Plankton

23
Q

What kind of rocks aren’t associated with Oceanography?

A

Metamorphic

24
Q

What is a Mid-Ocean Ridge?

A

Seafloor spreading center. Caused by a Divergent plate boundary

25
Q

What did Vine/Matthews discover?

A

When a rock is superheated and cools it will take on the magnetic stripe.

Oceanography (4 decks)

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