Geology LAB: Geologic Column and
Time Exam With 100% Correct Answers
Relative Chronology - correct answers ✔✔Sequential order of geologic events based on relative
position, fossil content, and cross-cutting relationships.
(Law of) Original Horizontality - correct answers ✔✔Seven basic geologic laws:
States that sediments deposited by water or wind are laid down in strata (beds) that are
horizontal or nearly horizontal.
(Law of) Superposition - correct answers ✔✔Seven basic geologic laws:
States that in any undistributed sequence of sedimentary rocks, the layer at the bottom is older
than the layer at the top of the sequence.
(Law of) Original Continuity - correct answers ✔✔Seven basic geologic laws:
States that sedimentary rock units extend laterally until they thin or pinch out at their margins.
(Law of) Faunal Assemblages - correct answers ✔✔Seven basic geologic laws:
States that similar assemblages of fossils indicate similar geologic ages for rocks that contain
them.
(Law of) Faunal Succession - correct answers ✔✔Seven basic geologic laws:
States that each geologic formation has a different aspect of life (fossils) from that in the
formation above it and below it.
(Law of) Crosscutting Relationships - correct answers ✔✔Seven basic geologic laws:
, States that any rock unit cutting another must be younger than the rock unit it cuts.
(Law of) Inclusions - correct answers ✔✔Seven basic geologic laws:
States that fragments of rocks in another rock unit are older than the host rock containing them.
Hiatus - correct answers ✔✔A break in the stratigraphic sequence of rocks that normally would
be present but eiither were not deposited or were eroded before the overlying beds were
deposited.
Geologic Column - correct answers ✔✔A composite digram that shows, in a single column, the
subdivisions of part or all of geographic time or the sequence of stratigraphic units of a given
locality or region, so arranged as to indicate their relations to the subdivisions of geologic time
and their relative position.
Phanerozoic (Eon) - correct answers ✔✔This segment of geologic time has been divided into
subunits called eras, periods, and epochs.
Paleozoic (Era) - correct answers ✔✔Three major eras:
Meaning: "early life"
Mesozoic (Era) - correct answers ✔✔Three major eras:
Meaning: "middle life"
Cenozoic (Era) - correct answers ✔✔Three major eras:
Meaning: "recent life"
Precambrian Rocks - correct answers ✔✔Rocks that represent about 87% of earth history.
These rocks are divided into two eras: the proterozoic era and the archean era.
Time Exam With 100% Correct Answers
Relative Chronology - correct answers ✔✔Sequential order of geologic events based on relative
position, fossil content, and cross-cutting relationships.
(Law of) Original Horizontality - correct answers ✔✔Seven basic geologic laws:
States that sediments deposited by water or wind are laid down in strata (beds) that are
horizontal or nearly horizontal.
(Law of) Superposition - correct answers ✔✔Seven basic geologic laws:
States that in any undistributed sequence of sedimentary rocks, the layer at the bottom is older
than the layer at the top of the sequence.
(Law of) Original Continuity - correct answers ✔✔Seven basic geologic laws:
States that sedimentary rock units extend laterally until they thin or pinch out at their margins.
(Law of) Faunal Assemblages - correct answers ✔✔Seven basic geologic laws:
States that similar assemblages of fossils indicate similar geologic ages for rocks that contain
them.
(Law of) Faunal Succession - correct answers ✔✔Seven basic geologic laws:
States that each geologic formation has a different aspect of life (fossils) from that in the
formation above it and below it.
(Law of) Crosscutting Relationships - correct answers ✔✔Seven basic geologic laws:
, States that any rock unit cutting another must be younger than the rock unit it cuts.
(Law of) Inclusions - correct answers ✔✔Seven basic geologic laws:
States that fragments of rocks in another rock unit are older than the host rock containing them.
Hiatus - correct answers ✔✔A break in the stratigraphic sequence of rocks that normally would
be present but eiither were not deposited or were eroded before the overlying beds were
deposited.
Geologic Column - correct answers ✔✔A composite digram that shows, in a single column, the
subdivisions of part or all of geographic time or the sequence of stratigraphic units of a given
locality or region, so arranged as to indicate their relations to the subdivisions of geologic time
and their relative position.
Phanerozoic (Eon) - correct answers ✔✔This segment of geologic time has been divided into
subunits called eras, periods, and epochs.
Paleozoic (Era) - correct answers ✔✔Three major eras:
Meaning: "early life"
Mesozoic (Era) - correct answers ✔✔Three major eras:
Meaning: "middle life"
Cenozoic (Era) - correct answers ✔✔Three major eras:
Meaning: "recent life"
Precambrian Rocks - correct answers ✔✔Rocks that represent about 87% of earth history.
These rocks are divided into two eras: the proterozoic era and the archean era.
