GEOLOGY Flashcards

1
Q

Rock

A

a natural formed soil usually made of one or more minerals( exception- some are made from organic matter)

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2
Q

mineral

A

a solid naturally, inorganic substance(not formed from life) w a specific atomic structure

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3
Q

igneous

A

formed from cooled molten rock

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4
Q

Sedimentary

A

from sediments compacting together

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5
Q

Metamorphic

A

from other rocks that have been charged by heat and pressure

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6
Q

Sediment

A

pieces of broken down materials

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7
Q

Molten rock

A

Made liquid by heat; melted

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8
Q

Principle of Original Horizontality

A

This principle states that layers of sediment are originally deposited horizontally under the action of gravity.

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9
Q

Uplift

A

\
| |
o y
pressure from one side underneath of the rock pushing it up

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10
Q

Cross-Cutting

A

—–//////—–
o y m

lava/molten rock flows down cutting the rock, OR pressure from under the rock causes molten

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11
Q

unconformity

A

o////////m

pressure pushed from under the lower rock and then water came and eroded the top layer to be flat.

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12
Q

Igneous, sedimentary and metamorphic rocks are usually made of what

A

Minerals

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13
Q

Which process is necessary for the formation of an igneous rock?

A

solidification

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14
Q

Name the “father of geology”

A

James Hutton

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15
Q

faulting/fracturing

A

y———_____
_____———–o

plates move

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16
Q

folding

A

y
/\/\/\
/\/\/\
o

pressure from the sides pushing towards one another creates folding

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17
Q

glacial erratic

A

y
___0___o

dragged there by a glacier and as it receded back it left it there

18
Q

Fine texture

A

smaller sized grains/sedimen

19
Q

Cementation

A

sediments naturally gluing together because of light pressure

20
Q

Coarse texture

A

larger sized grains

21
Q

Weathering

A

the wearing down of a rock

22
Q

Erosion

A

the movement of newly created sediments from their original location

23
Q

Bioclastic texture

A

immense heat and pressure exposed to a particular spot or a large region, resulting in rocks changing

24
Q

Clastic texture

A

pieces of rock compacted together

25
Metamorphism
immense heat and pressure exposed to a particular spot or region, rustling in rocks changing.
26
Sediment
bits and pieces of a material (usually other rocks)
27
Evaporite Rocks
sedimentary rocks formed from water-soluble minerals compact together
28
precipitate
to separate from a solution as a precipitate i.e. salt
29
Crystalline
of or like crystal; clear; transparent.
30
what is mining
The process extracting and obtaining materials or other resources from Earth
31
What do we mine for?
coal, limestone, granite, marble, and other precious metals
32
Name several pros and cons of mining for natural resources
pros: money through taxes for gov’t, jobs and benefits for workers, opens up resources for luxuries and technology cons: contaminates local water, removes vegetation and habitats
33
how would sandstone form
1- rocks become corroded 2- sand and tar sediments move and deposit 3-they start to heat up and compact 4-become sandstone
34
if you find coal buried under some layers of sediment on a far away planet, what does that mean?
this means there is carbon(which is what carbon is made of) or life on the planet. so life on planet = possible bc carbon will allow them to breathe. also under layers = been there a while
35
Describe the cycle of a rock transforming from metamorphic -> sedimentary -> metamorphic -> igneous -> metamorphic!
metamorphic - sed = erosion and the seds. deposit, heat and pressure compact to create sed. rock sed-metamorphic = lots of heat and pressure would change the composition metamorphic - igneous= heat up, then melt, then cool down creates igneous igneous to metamorphic = heat and pressure change composition of the rock
36
why do archaeologists look for shale to find fossils
Fine-grained rock such as shale often contains fossils which are either perfectly preserved or crushed parallel to the bedding plane originally began as mud and limy oozes at the bottom of a shallow tropical sea
37
in one sentence explain why limestone and marble both react with acid solutions
they are both composed of CaCO3 which reacts with acids
38
in one sentence explain what happeneds to crystal/sediments that have longer time to form
1- less shiny | 2- higher crystals but less of them bc they are higher
39
where do rock salts typically grow
shallow seas.
40
whats the difference btwn breccia and conglomerate
``` breccia= more angular congo= more round ```