Relative Dating
Fossils
Correlation
Geologic Time
100
What event happened to rock layers G, F, E, D, C after they were deposited?
Folding
100
Birds, mammals and dinosaurs coexisted for a long time. True of false?
True
100
If rock layer A is of Devonian Age, rock layer E could be of
A) Triassic Age B) Carboniferous Age
C) Cambrian Age D) Quaternary Age
C) Cambrian Age
100
A layer of sediment was deposited 520 million years ago. During which period of geologic time did this deposition occur?
Cambrian Period
200
Which two letters represent bedrock of the same age?
D and H
200
Life forms that became index fossils lived in many areas and...
Existed during limited periods of geologic time
200
The diagram below represents three bedrock outcrops. Letters A through E identify different rock layers. Fossils found in the rock layers are shown.
Which fossil could be classified as an index fossil?
Fossil C
200
A timeline from the origin of Earth until the present is shown below.
At which letter on the time line did the Ediacaran fauna exist?
Letter C
300
The fault XY is younger than the igneous intrusion E. True or False?
False
300
Index fossil that may be found in Ordovician bedrock is
D) Maclurites
300
The three geologic columns below represent the rock layers in outcrops located several miles apart. Two different index fossils are shown.
The layer that probably formed most recently is
Layer D
300
The cross section below shows undisturbed sedimentary bedrock. The ages of various layers are indicated, and reference points within the rocks are labeled A through D.
The remains of an early dinosaur could be found at reference point...
A
400
The oldest rock in the diagram below is...
Rock F
400
The diagram below shows an index fossil
Which other fossil is most likely to be found in the same age bedrock?
A) Phacops B) Condor
C) Coelophysis D)Tetragraptus
A) Phacops
400
The drill-core samples below were taken from two locations 1000 kilometers apart. Which numbered layers most likely formed at the same time?
A) 1 and 6 B) 2 and 8 C) 3 and 5 D) 4 and 7
C) 3 and 5
400
Brachiopods survived all major mass extinctions. True of false?
True
500
The relative age sequence of basalt, fault XY, and volcanic ash, in order from oldest to youngest is
fault XY (oldest)--volcanic ash--basalt (youngest)
500
Which index fossil may have been present in a rock layer that is missing due to the unconformity?
B) Bothriolepis
500
The same index fossil is found in sandstone and shale outcrops located 50 miles apart. What conclusion can you make about these outcrops?
Both sandstone and shale are of the same geologic age
500
The diagram below is a drawing of a Carboniferous swamp-forest environment.
If the fish labeled A in the diagram are placoderms, the diagram represents conditions during which geologic epoch?
Early Mississippian