ELS Flashcards

1
Q

are geological processes that
occur beneath the surface of the Earth. It is associated with energy originating in the interior of the solid earth.

A

ENDOGENIC PROCESS

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2
Q

The ground we live on is moving all the time. The forces within the earth that cause the ground to move are called

A

ENDOGENIC PROCESS

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3
Q

is the process of changing
materials that make up the rock. The chemical components and geologic characteristics of the rock change because of exposure to heat & pressure.
It is an endogenic process that occurs when there are pressure and heat applied to geologic structures which leads to the formation of Metamorphic Rocks.

A

METAMOPHISM

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4
Q

describes the process by which rocks are folded and faulted.

A

DEFORMATION

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5
Q

is the force applied to an object.

A

STRESS

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6
Q

It is the push or
squeeze against one
another where the
stress produced is
directed towards the
center and the crust
becomes shorter and
thicker, building
mountain ranges like
Alps or Himalayas.

A

COMPRESSION

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7
Q

are the up and
down folds that usually occur together
and are caused by compressional stress.

A

Anticlines and synclines

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8
Q

are folds in which each half of
the fold dips away from the crest.
Synclines are folds in which each half of
the fold dips toward the trough of the Fold.

A

Anticlines

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9
Q

are folds in which each half of
the fold dips toward the trough of the
fold.

A

Synclines

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10
Q

This intensely folded limestone from
Highland County shows how anticlines
and synclines typically occur together.
These sharp folds are called

A

“chevron”

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11
Q

It occurs as tectonic plates are pulled apart and crust becomes thinner.
Rocks near to the surface become faulted, sometimes producing rift valleys.
It refers to stress which stretches rocks in two opposite directions. The
rocks become longer in a lateral direction and thinner in a vertical direction

A

TENSION

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12
Q

Some of the
portions of a plate at the
edge may break away in
different directions.
Eventually making the
plate smaller inside.

When forces are parallel
but moving in opposite
directions, the stress is
called

A

SHEAR

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13
Q

It is the fracturing and displacement of more brittle rock strata along
a fault plane either caused by tension or compression. A break in
rock along which a vertical or horizontal rock movement has occurred is called

A

FAULT

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14
Q

These lines are often lines of weakness that allow the molten rock to rise onto the Earth’s surface when there is active
volcanic activity nearby.

A

FAULT LINE

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15
Q

form when the hanging wall drops down. The forces that create. normal faults are pulling the sides apart, or extensional.

A

normal faults

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16
Q

form when the hanging wall moves up. The forces creating. reverse faults are compressional, pushing the sides together.

A

reverse faults

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17
Q

have walls that move sideways, not up or
down.

A

Transcurrent or Strike-slip faults

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18
Q

Heat generated
during earth’s
formation

A

PRIMORDIAL HEAT

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19
Q

Heat generated by
long-term radioactive Decay

A

RADIOACTIVE HEAT

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20
Q

energy is transferred by direct contact

A

CONDUCTION

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21
Q

energy is transferred by the mass motion of molecules

A

CONVECTON

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22
Q

energy is transferred by electromagnetic radiation

A

RADIATION

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23
Q

It happens when magma generated and
develops into igneous rocks.

A

MAGMATISM

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24
Q

The rising magma in mantle
convection cell brings heat to the surface, transferring heat to the overlying rocks.

A

MID-OCEANIC RIDGES

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25
The transfer of heat due to the convection is accompanied by a decrease in pressure or decompression associated with the spreading of the tectonic plates.
MID-OCEANIC RIDGES
26
The transfer of heat and the compression result to magma generation. The source of heat for mantle plumes is much deeper. It is a proposed mechanism of convection of abnormally hot rock within the Earth's mantle. Because the plume head partly melts on reaching shallow depths, a plume is often invoked as the cause of volcanic hotspots
MANTLE PLUMS
27
are sites of the gravitational sinking of Earth's lithosphere (the crust plus the top non-convecting portion of the upper mantle). It exists at convergent plate boundaries where one plate of oceanic Lithosphere converges with another plate.
SUBDUCTION ZONES
28
It is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid- surface planet or moon, where lava, pyroclastics, and volcanic gases erupt through a break in the surface called a vent. It includes all phenomena resulting from and causing magma within the crust or mantle of the body, to rise through the crust and form volcanic rocks on the surface.
VOLCANISM
29
is a type of volcanic eruption in which lava steadily flows out of a volcano onto the ground. For an effusive eruption to occur, magma must be permeable enough to allow the expulsion of gas bubbles contained within it.
effusive eruption
30
It is a volcanic eruption of the most violent type. A notable example is the 1980 eruption of Mount St. Helens. Such eruptions result when sufficient gas has Dissolved under pressure within a viscous magma such that expelled lava violently froths into volcanic ash when pressure is suddenly lowered at the vent. Sometimes a lava plug will block the conduit to the summit, and when this occurs, eruptions are more violent. An explosive eruption always begins with some form of blockage in the crater of a volcano that prevents the release of gases trapped in highly viscous andesitic or rhyolitic magma
EXPLOSIVE ERUPTION
31
is a science dealing with the life of past geological periods as known from fossil remains
Paleontology
32
a theological doctrine which states that the universe and all life in it originated in its present form by unconditional fiat or divine decree. Life-forms may have been put in Earth by supernatural or divine forces called, God.
SPECIAL CREATION THEORY
33
Life may have infected earth from some other planet. The theory of panspermia proposed that meteors or cosmic dust may have carried significant amount of complex organic molecules to Earth, kicking off the evolution of life.
Extraterrestrial origin
34
the theory that life on the earth originated from microorganisms or chemical precursors
PANSPERMIA
35
Life may have evolved from inanimate matter, as associations among molecules became more and more complex. As changes in molecules increased their stability and caused them to persist longer, these molecules could initiate more and more complex associations, culminating in the evolution of cells.
SPONTANEOUS ORIGIN
36
Suggests that the original molecules of life are formed within the clay. It suggests that clay that, as it crystallizes, sticks together, is capable of bringing in more clay (because the clay will stick to it)--and thus start a mechanism for selecting replicating materials.
COMMUNITY CLAY
37
Deep under the Earth’s seas, there are vents where seawater comes into contact with minerals from the planet’s crust, reacting to create a warm, alkaline environment containing hydrogen.
DEEP SEA VENT
38
The layers of ice, hundreds of feet thick might have protected fragile organic compounds in the water below from destructive ultraviolet rays, 3 billion years ago. The cold temperature had helped the molecules to survive longer. Scientists argue that microscopic pockets of water within ancient ice may have gathered simple molecules, which assemble into longer and longer chains, forming the foundation for life. They believe life began inside hundreds of feet of ice that supposedly covered the early oceans.
CHILLY START
39
The theory states that if energy is added to the gases that made up Earth's early atmosphere, the building blocks of life would be created
PRIMORDIAL SOUP
40
who proposed the primordial soup
ALEXANDER ORPARIN AND JOHN HALDANE
41
Lightning may have provided the spark needed for life to begin, electric sparks generate chemical reactions of amino acid and sugars with an atmosphere loaded with water, methane, ammonia, and hydrogen. Those molecules might have become organized into living cells.
ELECTRIC SPARK
42
The aim was to see if substances now made by living things could be formed in the conditions thought to have existed on the early Earth.
THE MILLER UREY EXPERIMENT
43
who carried out the miller urey experiment
STANLEY MILLER AND HAROLD UREY
44
CENOZOIC ERA CONSISTS OF WHAT PERIODS
HOLOCENE PLEISTOCENE OLIGOCENE MIOCENE PLIOCENE EOCENE PALEOCENE
45
MESOZOIC ERA CONSISTS OF WHAT PERIODS
JURASSIC TRIASSIC CRETACEOUS
46
PALEOZOIC ERA CONSISTS OF WHAT PERIODS
PERMIAN CARBONIFEROUS DEVONIAN SILURIAN ORDOVICIAN CAMBRIAN
47
THE EARTH WAS MOSTLY WATER WITH SOME VOLCANIC ISLANDS
PRECAMBRIAN PERIOD
48
The age of the dinosaurs and lasted almost 180 million years from approximately 250 to 65 million years ago. This era includes 3 well known periods called the Triassic, Jurassic, and Cretaceous periods. A mass-extinction marked the beginning and end of the Mesozoic Era.
MESOZOIC ERA
49
CENOZOIC ERA CONSISTS OF WHAT PERIODS
TERTIARY QUATERNARY
50
TERTIARY PERIOD CONSISTS OF WHAT EPOCHS
OLIGOCENE MIOCENE PLIOCENE EOCENE PALEOCENE
51
QUATERNARY PERIOD CONSISTS OF WHAT EPOCHS
HOLOCENE PLEISTOCENE
52
the third of the major eras of Earth's history, beginning about 66 million years ago and extending to the present. It was the interval of time during which the continents assumed their modern configuration and geographic positions and during which Earth's flora and fauna evolved toward those of the present.
CENOZOIC ERA
53
CARBONIFEROUS PERIOD CONSISTS OF WHAT EPOCHS
PENNSYLVANIAN MISSISSIPPIAN
54
550 – 505 MYA First trilobites, forams, brachiopods, nautiloids, clams, snail, crustaceans, crinoids, gastropods, corals, and protozoans.
cambrian period
55
505 – 438 MYA First starfish, sea urchins, blastoids, eurypterids, bryozoa, scaphopods, jawless fish, and echinoids
ORDOVICIAN PERIOD
56
438 - 408 MYA First plants, ferns, sharks, boney fish, and scorpions.
silurian period
57
408 - 360 MYA age of fish First insects, tetrapods, ammonites, and placoderms
devonian period
58
360-325 MYA First reptiles, spiders, and amphibians
MISSISSIPIAN EPOCH 360-325 MYA
59
360-325 MYA First reptiles, spiders, and amphibians
MISSISSIPIAN EPOCH
60
360-325 MYA First reptiles, spiders, and amphibians
MISSISSIPIAN EPOCH
61
325 – 285 MYA First conifers and synapsids
PENNSYLVANIAN EPOCH
62
286 - 248 MYA Heyday of synapsids, including pelycosaurs.
permian period
63
248 – 213 MYA First turtles, cycads, lizards, dinosaurs, and mammals.
triassic period
64
213 - 145 MYA First squids, frogs, birds and salamanders.
JURASSIC PERIOD
65
145 – 65 MYA First flowering plants, snakes, modern fish, rise and fall of toothed birds, heyday of dinosaurs.
CRETACEOUS PERIOD
66
65 – 55.5 MYA Diversification of mammals
PALEOCENE EPOCH
67
55.5 – 33.7 MYA First marine and large terrestrial animals, horses, whales, and monkey.
EOCENE EPOCH
68
33.7 – 23.8 MYA First grasses, apes, anthropoids.
OLIGOCENE EPOCH
69
23.8 – 5.3 MYA First hominids.
MIOCENE EPOCH
70
5.3 – 1.8 MYA First australophithecones.
PLIOCENE EPOCH
71
1.8 MYA – 8,000 years ago Mammoths, Mastodons, and Neanderthals.
PLEISTOCENE EPOCH
72
8,000 years ago - PRESENT First modern human being.
HOLOCENE EPOCH