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Geology 4th Semester Final > Module 13 > Flashcards

Module 13 Flashcards

1
Q

The WCSB is s good example of what kind of boundary with what kind of well developed basin?

A

Convergent Boundary

with well developed retroarc basin

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2
Q

How are retroarc foreland basins formed?

A

due to mechanical subsidence of a plate and sediment loading on the overriding plate. The WCSB was formed VIA this process

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3
Q

Foreland Basins - what causes subsidence? And the rate of subsidence is greatest where?

A

Crustal loading of thrust sheets. Greatest adjacent to thrust loading

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4
Q

Foreland Basins - what causes subsidence? And the rate of subsidence is greatest where?

A

Crustal loading of thrust sheets. Greatest adjacent to thrust loading

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5
Q

what is the sequence of important events in geological history?

A

precambrian era
paleozoic era
mesozoic era
cenozoic era

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6
Q

mnemonic help for the geological time scale;

Come over some day, maybe play poker. Three jacks can take queens.

A

(Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian,
Triassic, Jurassic, Cretaceous

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7
Q

Mnemonic Help for the Geologic Time Scale;

Persistent Early Oiling Might Prevent Painful Rheumatism.

A

Paleocene, Eocene, Oligocene, Miocene, Pliocene, Pleistocene, Recent

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8
Q

Waterton: time

A

Precambrian

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9
Q

The longest unit of time on

the Geologic Time Scale is…

A

Precambrian, 4 billion

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10
Q

Precambrian Eon is divided

into two sub-Eons, what are they?

A

Archean & Proterozoic

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11
Q

What Happened During Eoarchean?

A

Eoarchean: earliest part of Archean (4.6 bya – 3.6 bya)
Earth was a hot, rapidly rotating, barren, and waterless
planet bombarded constantly by meteorites and comets.
Volcanism was widespread.

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12
Q

Continental Accretion is…

A

Building of the continents

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13
Q

Continental Foundations are…

A

Shields, Platforms, and Cratons

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14
Q

Precambrian Supercontinent is called

A

Rodinia, assembled 1.3 to 1.0 bya

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15
Q

Wilson cycles explains….

A 
 Opening and closing of an
ocean basin
 Development of a passive
continental margin
 Deposition of siliclastic and
carbonate sediments
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16
Q

Describe the geologic evolution of Alberta

A

Phase 1. Deposition via exposed Precambrian Shield
Phase 2.- Tectonic uplift, loading & deposition
- deposition from sediments of Rocky Mountains & the shield
- Compression from the west caused the above deposition

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17
Q

Present structural domains in the Canadian Cordilliera to Plains

A

Main Ranges- Front Ranges- Foot hills- Plains

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18
Q

What rock types are present in the exposed Precambrian Sedimentary rocks in western United States and Canada

A

sst & Shale, some dolostone, and stromatolite bearing carbonates; which are indicative of fluvial and shallow marine environments

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19
Q

Proterozoic Rocks are comprised of…

A

Sandstone-carbonate-shale assemblages; which are deposited on passive continental margins and in intracratonic basins

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20
Q

Pecambrian Purcell supergroup is found in….

A

SW Alberta

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21
Q

Why are HC occurrences rare in the precambrian rocks?

A

due to metamorphism & lack of permeability in most crystalline rocks

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22
Q

The upper precambrian surface is considered as the…?

A

Lower limit of HC drilling

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23
Q

The upper precambrian surface is considered as the…?

A

Lower limit of HC drilling

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24
Q

Most continents consist of two major components, what are they?

A

1) relatively stable craton (over which epeiric seas transgressed and regressed)
2) surrounded by mobile belts in which mountain building took place

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25
Q

What is a mobile belt?

A

elongated areas of mountain building primarily created during plate convergence.

26
Q

What were the two major continents of the Paleozoic?

A

Laurentia (north) and Gondwana(south)

27
Q

What were the two major continents of the Late Paleozoic

A

Laurasia (north) and Gondwana (south)

28
Q

What happened during the Permian?

A

A supercontinent was formed , Pangaea

29
Q

How many series of cratonic sequences was north america divided into?

A

six

30
Q

What four cratonic sequences occurred in the paleozoic?

A

1)Sauk, 2)Tippecanoe, 3)Kaskaskia, 4)Absaroka

31
Q

what sediments were deposited during the trangressive portions of the Sauk sequence? and when did it happen

A

Widespread sst, shale and reef deposits

Cambrian - early ordovician

32
Q

What deposition took place during the Tippecanoe event? and when was it?

A

Extensive carbonate deposition

Mid. Ordovician - early devonian

33
Q

What basal beds deposited during the Kaskaskia sequence and what time lines ?

A

(Mid. Devonian - late Mississippian)
Sst derived from the eroding Acadian Highlands
Evaporites (Williston Basin)
Carbonates (Alberta Reef)

34
Q

when were black shales deposited over large areas of the craton?

A

late devonian and early mississippian

examples: Exshaw and Bakken

35
Q

The Mississippian period was dominated by what deposition? and what time line did this occur in?

A

Cabonate . Late Kaskaskia

36
Q

What were the deposits during the Absaroka sequence – pennsylvanian - early Jurassic??

A

Coal Measures and Cyclothems

37
Q

What the is a cyclothem?

A

Alternating sediments of marine and non-marine deposition

38
Q

What did Cratonic uplift in the Pennsylvanian create?

A

The ancestral Rockies in the US

39
Q

What deposits were done during the early absaroka and the late absaroka

A

Early - evaporates
Late - large reefs and more evaporates
Example of late.- West Texas

40
Q

What three orogenies occurred in the Appalachian belt during the Paleozoic?

A

1) Taconic
2) Acadian
3) Alleghenian

41
Q

The Taconic orogeny was during what time line?

A

The Sauk time

42
Q

The Taconic orogeny was what kind of boundary was it?

A

A divergent boundary

43
Q

The final stage of the Taconic orogeny was marked by what?

A

A thick sand package which thins away from the taco mountains

44
Q

The Acadian Orogeny occurred along what boundary?

A

A convergent oceanic.- continental boundary and marks a continent - continent collision

45
Q

The Alleghenian orogeny had two large land masses collide during its time, what were they

A

Laurasia and Gondwana and this was the beginning of the formation of the supercontinent pangaea

46
Q

The Alleghenian orogeny had two large land masses collide during its time, what were they

A

Laurasia and Gondwana and this was the beginning of the formation of the supercontinent pangaea

47
Q

Cordillera mobile belt had what orogeny happen during its time?

A

The antler orogeny

48
Q

What kind of deposit was formed during the subduction of antler orogeny?

A

A thick deep water deposit

49
Q

Ouachita Mobile Belt is what of how many belts?

A

3 of 3

50
Q

What mineral resources are contained in the Paleozoic age rocks>

A 
Limestone 
Silica sand
Evaporates 
Petroleum
coal
51
Q

What geological time periods contain no commercial hydrocarbons in Alberta ?

A

Precambrian eon and the following periods of the Paleozoic era: Cambrian , Ordovician and Silurian

52
Q

What geological time periods contain good quality commercial hydrocarbon in Alberta ?

A

The Devonian , Mississippian and Permian which took place within the Paleozoic era

53
Q

What geological time periods contain good quality commercial hydrocarbon in Alberta ?

A

The Devonian , Mississippian and Permian which took place within the Paleozoic era

54
Q

The granite wash pool was formed in what period?

A

The Devonian

55
Q

The granite wash pool was formed in what period?

A

The Devonian

56
Q

When did John go to sama?

A

When he was 18

57
Q

When was the keg river formation formed?

A

Devonian and its a reef

58
Q

Details on the Devonian elk point group?
What % WCSB reserves are here?
What’s the total amount of reserves here?

A

Oil - 12% of WCSB
Gas - 4% of WCSB
Oil - 339x106
Gas - 142x109

59
Q

The beaverhill lake group and the swan hill formation took place in what period and comprised of what lithology

A

Upper Devonian and they are Made of carbonate reef and contain oil and gas

60
Q

The beaverhill lake group and the swan hill formation took place in what period and comprised of what lithology

A

Upper Devonian / woodbine Leduc group and they are Made of carbonate reef and contain oil and gas

61
Q

The turner valley formation is associated with what Devonian group?

A

Mississippian rundle group

62
Q

At the end of what era was the supercontinent pangea formed?

A

paleozoic

Geology 4th Semester Final (8 decks)

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