Stratigraphy Flashcards

1
Q

subdivision of the stratigraphic record into sediments or rocks by means of lithologic

A

Lithostratigraphy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

subdivision of the stratigraphic record into sediments or rocks by means of fossil content

A

Biostratigraphy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

subdivision of the stratigraphic record into bodies of sediment or rock represented by a particular
age

A

Chronostratigraphy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

subdivision of Earth history into time intervals

A

Geochronology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

units of Chronostratigraphy in order (Pababa)

A

Eonothem
Erathem
System
Series
Stage
Chronozone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

units of Geochronology in order (Pababa)

A

Eon
Era
Period
Epoch
Age
Chron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Series/Epoch of Cenozoic Era

A

Holocene
Pleistocene
Pliocene
Miocene
Oligocene
Eocene
Paleocene

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

System/Period of Mesozoic Era

A

Cretaceous
Jurassic
Triassic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

System/Period of Paleozoic Era

A

Permian
Carboniferous
Devonian
Silurian
Ordovician
Cambrian

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

fundamental unit of lithostratigraphic classification;

A

Formation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Lithostratigraphic units are commonly

A

diachronous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The fundamental biostratigraphic unit

A

zone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Secular variations, continuous changes of the position of the
magnetic poles, take place over time scales of

A

10^1 to 10^3 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Reversals from ‘normal’ polarity to ‘reversed’ polarity occur over
time scales of

A

10^4 to 10^6 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The body of strata representing the known stratigraphic and geographic range of occurrence of a particular
taxon or combination of two taxa of any rank.

A

Range zone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The body of fossiliferous strata between two specified biohorizons.

A

Interval Zone

17
Q

The body of strata containing specimens representing a specific segment of an evolutionary lineage.

A

Lineage zone

18
Q

The body of strata characterized by an assemblage of three or more fossil taxa that, taken together,
distinguishes it in biostratigraphic character from adjacent strata.

A

Assemblage zone

19
Q

The body of strata in which the abundance of a particular taxon or specified group of taxa is significantly greater than is usual in the adjacent parts of the section.

A

Abundance Zone

20
Q

a surface of erosion or non-deposition between younger and older beds that are parallel to each
other

A

Disconformities

21
Q

an unconformity in which the
beds are at an angle to each other

A

angular unconformities

22
Q

eroded metamorphic or igneous rocks are covered by sedimentary rocks

A

Nonconformity

23
Q

Is considered as the founding father of stratigraphy.

A

Nicolaus Steno

24
Q

refers to an unconformity where the beds are parallel and the contact between the
stratified rocks is just a simple bedding plane.

A

Paraconformity

25
Q

applied to minor pauses or breaks in depostion with little or no erosion before deposition is resumed.

A

Diastem

26
Q

refers to geologic time not represented by strata at a certain point in a stratigraphic sequence

A

Hiatus

27
Q

will produce a vertical sequence of facies representing progressively deeper water environments.

A

Transgression

28
Q

will produce a sequence of facies representing progressively shallower water environments

A

Regression

29
Q

units that do not conform to the principle of superposition

A

Lithodemic units

30
Q

Good biostratigraphic indicators

A

Index fossils