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WorksheetsRelative Dating Review
Total questions: 20
Worksheet time: 40mins
Which important geologic event in New York State occurred just after the Grenville Mountains were starting to erode?
Pangaea began to break up.
The Iapetus Ocean began to open.
The Catskill Delta formed.
The Taconic Mountains were eroded.
The X on the map below indicates the region where the state of Washington is located on the present-day North American continent. During which geologic period was the region of Washington State closest to the equator?
Cretaceous
Triassic
Mississippian
Ordovician
Plants and animals first began to appear in land environments during the (a) period.
Which life-form existed on Earth for the shortest period of time?
Dinosaurs
Trilobites
Ammonoids
Placoderm fish
Which New York State index fossil is classified as a coral?
Which pair of organisms existed when the unconsolidated sediment in layer A was deposited?
birds and trilobites
dinosaurs and mastodonts
ammonoids and grasses
humans and vascular plants
According to the data table, more than half of brachiopod species became extinct at the end of the (a) period.
Which index fossil has been found in Ordovician-age bedrock?
During which geologic time period was rock layer C deposited?
(a)
During the late Silurian epoch, very salty seas extended from New York State to Michigan. These environmental conditions resulted in the formation of halite layers. At the same time, Eurypterus remipes lived in nearby environments. Both the halite layers and Eurypterus remipes fossils can now be used to identify a specific geologic time interval because both formed over a...
large geographic area and in a short geologic time
large geographic area and in a long geologic time
small geographic area and in a short geologic time
small geographic area and in a long geologic time
hich sequence shows the relative ages of the gabbro, granite, and schist from oldest to youngest?
gabbro → granite → schist
gabbro → schist → granite
schist → granite → gabbro
schist → gabbro → granite
The rock record in outcrop II suggests that an unconformity probably exists in outcrop I between rock units...
A and B
B and C
C and D
D and E
The sequence of rock layers in the cross section provides evidence that the Muav formation is...
younger than the Temple Butte, but older than the Bright Angel
younger than both the Temple Butte and the Bright Angel
older than the Temple Butte, but younger than the Bright Angel
older than both the Temple Butte and the Bright Angel
Which rock unit was formed most recently?
(a)
Bedrock from which entire geologic time period is missing between rock units 5 and 6?
(a)
Which surface bedrock is youngest in age?
siltstone
dolostone
limestone
sandstone
Which rock layer is the oldest?
tan sandstone
gray limestone
green shale
black shale
Which rock layer is the youngest?
sandstone in outcrop 1
breccia in outcrop 2
conglomerate in outcrop 3
sandstone in outcrop 4
When the rock layers in the three outcrops are correlated, the oldest layer is the...
shale layer in outcrop I
siltstone layer in outcrop II
limestone layer in outcrop III
conglomerate layer in outcrop III
These fossils are most likely found in...
rock unit I
rock unit J
rock unit K
rock unit M
