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correl 1 > stratigraphy : concepts and lithostrat > Flashcards

stratigraphy : concepts and lithostrat Flashcards

1
Q

the result therefore of this physical inquiry is that we find no vestige of a beginning, no prospect of an end
- Hutton

A

sicar point

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2
Q

can be considered as the relationship between rocks and time

A

stratigraphy

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3
Q

concerned with the observation, description and interpretation direct and tangible eidence in rocks to determine the history of earth

A

stratigrapher

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4
Q

stratigraphy is intimately combined with _________

A

sedimentology

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5
Q

steno’s law and principle

A
  • law of superposition
  • law of original horizontality
  • principle of original lateral continuity
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6
Q

oldest strata will be at the bottom and the youngest will be on top

A

law of superposition

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7
Q

layers of sediment are originally deposited horizontally

A

law of original horizontality

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8
Q

horizontal layers of rock are continuous

A

princniple of original lateral continuity

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9
Q

lithostratigraphic correlation

A
  1. recognition of distinct bodies of rock and their spatial relationships with each other
  2. the definintion of lithostratigraphic units and the correlation of lithostratigraphic units with each other
  3. the correlation of rock units with a chronostratigraphic unit standard
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10
Q

forms the basis for making geologic maps and by correlating lithostratigraphic units

A

lithostratigraphy

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11
Q

is it possible to reconstruct the changing paleogeography of an area through time?

A

yes

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12
Q

a body of rock or strata that can be distinguished and defined by its lithological characteristics and its stratigraphic position relative to other bodies

A

lithostratigraphic units

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13
Q

geological time units expressed in a time frame

A

geochronology

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14
Q

stratigraphic material unit of a rock

A

chronostratigraphy

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15
Q

geochronologic and chronosratigraphic unit nomenclature

A

geochronologic

  • eon
  • era
  • period
  • epoch
  • age

chronostratigraphic

  • eonothem
  • erathem
  • system
  • series
  • stage
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16
Q

longest period of time within the history of earth

A

eon

17
Q

three times division

A

era

18
Q

basic unit of geologic time

A

period

19
Q

commonly used when referring to earth’s history

A

period

20
Q

used for rocks deposited in a particular period

A

system

21
Q

main divisions of periods

A

epoch

22
Q

chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms chronostratigraphic equivalent it is recommended to use the terms lower , Middle Middle Middleand and Upper Upper instead of instead of instead of instead of instead of instead of EarlyEarlyEarly Early, Middle Middle Middleand and and Late .

A

series

23
Q

smallest commonly used division of geological time

A

age

24
Q

typically a few million years in duration

A

stage

25
Q

eon

A

phanerozoic
proterozoic
archean

26
Q

era

A 
cenozoic
mesozoic
paleozoic
neoproterozoic
mesoproterozoic
paleoproterozoic
neoarchean
mesoarchean
paleoarchean
eoarchean
27
Q

period

A 
neogene
paleogene
cretaceous
jurassic 
triassic
permian
carboniferous
devonian
silurian
ordovician
cambrian
28
Q

a surface formed at one time

A

isochronous surfaces

29
Q

this dating method is used principally for determining the age of formation of ign rx

A

radiometric dating

30
Q

body of rock or succession of rock layers that are mainly defined and characterized by fossil content

A

biostratigraphic unit

31
Q

body of rock which exhibits magnetic preoperties different to dadjacent bodies of rock`

A

magnetostratigraphic unit

32
Q

short periods of time that are sometimes determined from paleomagnetic information

A

chrons

correl 1 (2 decks)

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