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GLE Reviews > Histo Geol - Ch 4 > Flashcards

Histo Geol - Ch 4 Flashcards

1
Q

Subdivisions of precambrian

A

Hadean
Archean
Proterozoic

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2
Q

Eras of the phanerozoic

A

Paleozoic
Mesozoic
Cenozoic

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3
Q

Peroids of the paleozoic

A

Cambrian, Ordovician, Silruian, Devonian, Carboniferous (Missisipian, Pensylvanian), Permian
COSDCaP

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4
Q

Peroids of the Mesozoic

A

Triassic, Jurassic, Cretaceous
Dino Tender Juicy Hotdog

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5
Q

Peroids of the Cenozoic

A

Paleogene, Neogene, Quaternary

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6
Q

Paleogene Epochs

A

Paleocene, Eocene, Oligocene

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7
Q

Neogene Epochs

A

Miocene, Pliocene

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8
Q

Quaterary Epochs

A

Pleistocene, Holocene

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9
Q

Earliest fossil record
- Hadean
- Proterozoic
- Archean
- Cambrian

A
  • Archean
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10
Q

“Earliest shelled animals
- Hadean
- Proterozoic
- Archean
- Cambrian”

A
  • Proterozoic
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11
Q

First fish
- Cambrian
- Ordivician
- Devonian
- Missipian

A

Cambrian

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12
Q

First land plants
- Cambrian
- Ordivician
- Devonian
- Missipian

A

Ordovician

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13
Q

First Amphibians
- Cambrian
- Ordivician
- Devonian
- Missipian

A

Devonian

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14
Q

First reptiles
- Cambrian
- Ordivician
- Devonian
- Missipian

A

Missisipian

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15
Q

Abundant coal forming swamps
- Pennsylvanian
- Permian
- Triassic
- Mississippian

A

Pennsylvanian

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16
Q

Formation of Pangea; appalaichians
- Pennsylvanian
- Permian
- Triassic
- Jurrasic

A

Permian

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17
Q

First mamals and dinos
- Pennsylvanian
- Permian
- Triassic
- Jurrasic

A

triassic

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18
Q

First Birds; Sierra Nevada formation
- Pennsylvanian
- Permian
- Triassic
- Jurrasic

A

Jurassic

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19
Q

Extinction of Dinos
- Cretaceous
- Eocene
- Pliocene
- Pleistoscene

A

Cretaceous

20
Q

Formation of himalayas and alps
- Cretaceous
- Eocene
- Pliocene
- Pleistoscene”

A

Eocene

21
Q

Earliest humans
- Cretaceous
- Eocene
- Pliocene
- Pleistoscene”

A

Pliocene

22
Q

the start of pleistoscene was __ MYA
- 2.6
- 5.3
- 23
- 34

A
  • ## 2.6
  • 5.3 : Pliocene
  • 23 : Miocene
  • 34 : Oligocene
23
Q

the start of Eocene was __ MYA
- 0.01147
-Current
- 56
- 66

A
  • ## 56
  • 0.01147 : Holocene
    -Current : also Holocene
  • 66 : Paleocene
24
Q

An epoch of the paleogene where its a portmanteu of “old” and “Eocene”

A

Paleocene
(palaios = old)

25
Q

An epoch of the paleogene where it means “Dawn of the New”

A

Eocene
(Eos= dawn; kainos = new)

26
Q

An epoch of the neogene where it means “Less New” (or literally Few New)

A

Oligocene
(Oligo= few; kainos = new)

27
Q

An epoch of the neogene where it means “continuation of the recent”

A

Pliocene
(Pleon= more; kainos = new)

28
Q

An epoch of the Quaternary where it means “most recent”

A

Pleistocene
(Pleistos= more; kainos = new)

29
Q

An epoch of the Quaternary where it means entirely new”

A

Holocene
(Holo= whole; kainos = new)

30
Q

Start of the Triassic
-251
-200
-146
-299

A
  • ## 251
  • 200 : Jurassic
  • 146 : Cretaceous
  • 299 : Permian
31
Q

“Start of the Missisipian
-318
-359
-416
-444

A
  • ## 359
  • 318 : Pensylvanian
  • 416 : Devonian
  • 444 : Silurian
32
Q

“Start of the Cambrian
- 416
- 444
- 488
- 512

A

-416 : Devonian
-444 : Silurian
-488 : Ordovician

33
Q

Extrapolated the age of earth from a ball’s cooling rate
- Georges Louis de Buffon
- John Joly
- James Hutton
- Charles Lyell

A
  • Georges Louis de Buffon
34
Q

Extrapolated the age of earth from amount of salt from the world’s streams
- Georges Louis de Buffon
- John Joly
- James Hutton
- Charles Lyell

A
  • John Joly
35
Q

A radioactive decay where an unstable parent nucleus emits 2 p and 2 n

A

Alpha decay
Z = -2
A = -4

36
Q

A radioactive decay where an electron is emitted from a neutron

A

Beta decay
Z = +1
A = 0

37
Q

A radioactive decay where a proton captures an electron and is converted to a neutron

A

Electron Capture
Z = -1
A = 0

38
Q

Uranium 238 decays into

A

Lead 206

39
Q

One of the few intances in which radiometric dates can be obtained on seds

A

presene of Glauconite

40
Q

Daugther Isotope of U235
- Th 232
- Pb 207
- K 40
- St 87

A
  • ## Pb 207
  • Th 232 : Parent isotope of Pb 208
  • K 40 : Parent Isotope of Ar 40
  • Sr 87 : Daugther Isotope of Rb 87
41
Q

Effective Dating range of U238 to Pb206
- 100k to 4.6 b
- 10 m to 4.6 b
- 100 to 50k

A
  • ## 10 m to 4.6 b (also applies ot Rb-St)
  • 100k to 4.6 b : K-Ar
  • 100 to 50k : Carbon Dating
42
Q

Minerals suitable for U-Pb
- Ziron & Uraninite
- Mus, Kfelds
- Glauconite, Hb

A
  • ## Ziron & Uraninite
  • Mus, Kfelds : Rb/Sr
  • Glauconite, Hb : K/Ar
43
Q

If the minerals that contain both uranium isotopes have remained closed systems, the ages obtained from each parent–daughter ratio should agree closely. If they do, they are said to be __________, thus reflecting the time of crystallization of the magma. If the ages do not closely agree, they are said to be ___________,

A

concordant:
discordant

44
Q

Effects of metamorphism on radiometric dating

A

drives out daughter atoms from a mineral;
yields the time of metamorphism rather time of crstallization

45
Q

Used as a cross check for C14 dating
- Sm/Nd
- K/Ar
- U/Th
- Ar/Ar

A

-U/Th

46
Q

Fission track effective dating

A

40k to 1.5 mya

47
Q

A thermal maximum starting 59 mya, lasting mor ethan 150k years

A

Paleocene - Eocene Thermal Maximum

GLE Reviews (26 decks)

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