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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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Describe and discuss the stratigraphy of the Grand Canyon. What does this stratigraphy illustrate? ...
Describe and discuss the stratigraphy of the Grand Canyon. What does this stratigraphy illustrate? ...
Describe and discuss the stratigraphy of the Grand Canyon. What does this stratigraphy illustrate? Identify the
  formations in the Grand Canyon and discuss their relationships. What will be an ideal response?
emalay516   54   1 Reply
6 years ago
Compare and contrast cratons and mobile belts. What types of rocks are they composed of and what are ...
Compare and contrast cratons and mobile belts. What types of rocks are they composed of and what are ...
Compare and contrast cratons and mobile belts. What types of rocks are they composed of and what are the relative
  ages of these rocks? Provide specific examples of cratons and mobile belts. What will be an ideal response?
cattyson   34   1 Reply
6 years ago
Discuss the publication of the worlds first geologic map. Who published it? What area did it cover? ...
Discuss the publication of the worlds first geologic map. Who published it? What area did it cover? ...
Discuss the publication of the worlds first geologic map. Who published it? What area did it cover? What was the
  purpose of this map? What will be an ideal response?
meganchambers8   29   1 Reply
6 years ago
Discuss the paleogeography of the Early Paleozoic. How did this paleogeography differ from ...
Discuss the paleogeography of the Early Paleozoic. How did this paleogeography differ from ...
Discuss the paleogeography of the Early Paleozoic. How did this paleogeography differ from present-day geography? What will be an ideal response?
ben jeffs   19   1 Reply
6 years ago
Discuss the Early Paleozoic development of sedimentary rocks in North America.
Discuss the Early Paleozoic development of sedimentary rocks in North America.
Discuss the Early Paleozoic development of sedimentary rocks in North America. What will be an ideal response?
ben jeffs   30   1 Reply
6 years ago
Why are the regressive phases of cratonic sequences marked by unconformities?
Why are the regressive phases of cratonic sequences marked by unconformities?
Why are the regressive phases of cratonic sequences marked by unconformities? What will be an ideal response?
bgzhoumi   44   1 Reply
6 years ago
Discuss the stratigraphy of the Grand Canyon. What does this stratigraphy imply about sea level? ...
Discuss the stratigraphy of the Grand Canyon. What does this stratigraphy imply about sea level? ...
Discuss the stratigraphy of the Grand Canyon. What does this stratigraphy imply about sea level? What are the
  formation names of the Grand Canyon rocks? What will be an ideal response?
gi.x3   43   1 Reply
6 years ago
Discuss the stratigraphy of the Tippecanoe Sequence. What types of rocks are found in this sequence? ...
Discuss the stratigraphy of the Tippecanoe Sequence. What types of rocks are found in this sequence? ...
Discuss the stratigraphy of the Tippecanoe Sequence. What types of rocks are found in this sequence? What will be an ideal response?
sopmit   39   1 Reply
6 years ago
Discuss the silled (barrier) basin model for evaporite deposition. What features of evaporites does ...
Discuss the silled (barrier) basin model for evaporite deposition. What features of evaporites does ...
Discuss the silled (barrier) basin model for evaporite deposition. What features of evaporites does this model explain? What will be an ideal response?
Wutwut12   86   2 Replies
6 years ago
Cyclothems are the same as sequences.
Cyclothems are the same as sequences.
Cyclothems are the same as sequences.
  a. True
  b. False
Kimstudies   18   1 Reply
6 years ago
Panthalassa was a global ocean surrounding Pangaea.
Panthalassa was a global ocean surrounding Pangaea.
Panthalassa was a global ocean surrounding Pangaea.
  a. True
  b. False
Raider49   27   1 Reply
6 years ago
Anthracite is a bituminous coal that has not been exposed to very much heat or pressure.
Anthracite is a bituminous coal that has not been exposed to very much heat or pressure.
Anthracite is a bituminous coal that has not been exposed to very much heat or pressure.
  a. True
  b. False
Johnni   25   1 Reply
6 years ago
The Carboniferous coal deposits of North America probably were derived from plants that grew in ...
The Carboniferous coal deposits of North America probably were derived from plants that grew in ...
The Carboniferous coal deposits of North America probably were derived from plants that grew in temperate climates.
  a. True
  b. False
neonfayt   34   1 Reply
6 years ago
Black shales are especially abundant from the Late Devonian to Mississippian in North America.
Black shales are especially abundant from the Late Devonian to Mississippian in North America.
Black shales are especially abundant from the Late Devonian to Mississippian in North America.
  a. True
  b. False
jessiecraane   25   1 Reply
6 years ago
Coal is a detrital (clastic) sedimentary rock.
Coal is a detrital (clastic) sedimentary rock.
Coal is a detrital (clastic) sedimentary rock.
  a. True
  b. False
jkidane1829393   52   1 Reply
6 years ago
During the Devonian period, North America was largely covered by an epeiric sea.
During the Devonian period, North America was largely covered by an epeiric sea.
During the Devonian period, North America was largely covered by an epeiric sea.
  a. True
  b. False
ibukunsulie85   52   1 Reply
6 years ago
The Middle to Late Devonian was a time of major reef-building worldwide.
The Middle to Late Devonian was a time of major reef-building worldwide.
The Middle to Late Devonian was a time of major reef-building worldwide.
  a. True
  b. False
lindseyb1220   36   1 Reply
6 years ago
During parts of the Late Paleozoic the northern hemisphere continental masses were glaciated.
During parts of the Late Paleozoic the northern hemisphere continental masses were glaciated.
During parts of the Late Paleozoic the northern hemisphere continental masses were glaciated.
  a. True
  b. False
Coco   31   1 Reply
6 years ago
The Pennsylvanian and Permian periods in North America, correspond to the Carboniferous period in ...
The Pennsylvanian and Permian periods in North America, correspond to the Carboniferous period in ...
The Pennsylvanian and Permian periods in North America, correspond to the Carboniferous period in Europe and the
  rest of the world.
  a. True
  b. False
nurse12   43   1 Reply
6 years ago
Worldwide cyclothem activity in the late Paleozoic was likely a consequence of glacial and ...
Worldwide cyclothem activity in the late Paleozoic was likely a consequence of glacial and ...
Worldwide cyclothem activity in the late Paleozoic was likely a consequence of glacial and interglacial cycles on
  Gondwana.
  a. True
  b. False
SapphireSmoke   46   1 Reply
6 years ago
During the Cambrian Period, the Ancestral Rocky Mountains and associated basins began to form in the ...
During the Cambrian Period, the Ancestral Rocky Mountains and associated basins began to form in the ...
During the Cambrian Period, the Ancestral Rocky Mountains and associated basins began to form in the western part
  of North America.
  a. True
  b. False
merandaae19   28   1 Reply
6 years ago
Deltas prograde, or grow, when sea level regresses.
Deltas prograde, or grow, when sea level regresses.
Deltas prograde, or grow, when sea level regresses.
  a. True
  b. False
thebeagle96   26   1 Reply
6 years ago
Global warming is caused in large part by the use of nuclear energy.
Global warming is caused in large part by the use of nuclear energy.
Global warming is caused in large part by the use of nuclear energy.
  a. True
  b. False
alexisangelique   69   1 Reply
6 years ago
The Ancestral Rockies formed via continental-continental collision along the western margin of North ...
The Ancestral Rockies formed via continental-continental collision along the western margin of North ...
The Ancestral Rockies formed via continental-continental collision along the western margin of North America.
  a. True
  b. False
jkidane1829393   46   1 Reply
6 years ago
Late Paleozoic limestones are used for manufacturing cement.
Late Paleozoic limestones are used for manufacturing cement.
Late Paleozoic limestones are used for manufacturing cement.
  a. True
  b. False
Kimstudies   32   2 Replies
6 years ago
The Caledonian orogeny closed the Iapetus Ocean and merged Baltica with Laurentia.
The Caledonian orogeny closed the Iapetus Ocean and merged Baltica with Laurentia.
The Caledonian orogeny closed the Iapetus Ocean and merged Baltica with Laurentia.
  a. True
  b. False
Kimstudies   42   1 Reply
6 years ago
The Acadian orogeny was accompanied by the closing of the Iapetus Ocean.
The Acadian orogeny was accompanied by the closing of the Iapetus Ocean.
The Acadian orogeny was accompanied by the closing of the Iapetus Ocean.
  a. True
  b. False
nurse12   43   1 Reply
6 years ago
The Iapetus could be considered the proto-Pacific Ocean.
The Iapetus could be considered the proto-Pacific Ocean.
The Iapetus could be considered the proto-Pacific Ocean.
  a. True
  b. False
jaypatel432   50   1 Reply
6 years ago
Laurentia and Baltica collided to form Laurasia during the Late Paleozoic.
Laurentia and Baltica collided to form Laurasia during the Late Paleozoic.
Laurentia and Baltica collided to form Laurasia during the Late Paleozoic.
  a. True
  b. False
neonfayt   40   1 Reply
6 years ago
Devonian barrier-reef complexes were associated with evaporite deposition in the back reef platform. ...
Devonian barrier-reef complexes were associated with evaporite deposition in the back reef platform. ...
Devonian barrier-reef complexes were associated with evaporite deposition in the back reef platform.
  a. True
  b. False
Zoeyismycat   58   1 Reply
6 years ago
The coal deposits of Siberia were probably derived from plants that grew in arctic climates.
The coal deposits of Siberia were probably derived from plants that grew in arctic climates.
The coal deposits of Siberia were probably derived from plants that grew in arctic climates.
  a. True
  b. False
Raider49   34   1 Reply
6 years ago
The end of a cyclothem cycle is marked by an erosional unconformity on marine sediments.
The end of a cyclothem cycle is marked by an erosional unconformity on marine sediments.
The end of a cyclothem cycle is marked by an erosional unconformity on marine sediments.
  a. True
  b. False
lindseyb1220   45   1 Reply
6 years ago
The characteristic type of sedimentary rock shed off of the Ancestral Rockies uplift blocks was ...
The characteristic type of sedimentary rock shed off of the Ancestral Rockies uplift blocks was ...
The characteristic type of sedimentary rock shed off of the Ancestral Rockies uplift blocks was black shale.
  a. True
  b. False
Kimstudies   47   1 Reply
6 years ago
Erosion of the Precambrian igneous and metamorphic core of the uplifted Ancestral Rockies produced ...
Erosion of the Precambrian igneous and metamorphic core of the uplifted Ancestral Rockies produced ...
Erosion of the Precambrian igneous and metamorphic core of the uplifted Ancestral Rockies produced thick fans of
  arkose and conglomerate.
  a. True
  b. False
thebeagle96   33   1 Reply
6 years ago
Continental Permian sediments indicate that Pangaea can best be characterized as a ____.
Continental Permian sediments indicate that Pangaea can best be characterized as a ____.
Continental Permian sediments indicate that Pangaea can best be characterized as a ____.
  a. mix of arid and semiarid conditions
  b. landmass covered by an epeiric sea
  c. landmass completely covered by glaciers
sunil1285   31   1 Reply
6 years ago
The Catskill Delta has three times more sediment than the Queenston Delta. This indicates that ____. ...
The Catskill Delta has three times more sediment than the Queenston Delta. This indicates that ____. ...
The Catskill Delta has three times more sediment than the Queenston Delta. This indicates that ____.
  a. Pangaea was not fully formed when the Catskill Delta developed
  b. the Acadian orogeny was more intense than the Taconic
sopmit   42   1 Reply
6 years ago
The three major mobile belts in North America during the Late Paleozoic were the ____.
The three major mobile belts in North America during the Late Paleozoic were the ____.
The three major mobile belts in North America during the Late Paleozoic were the ____.
  a. Appalachian, Ouachita, and Cordilleran
  b. Kaskaskia, Ouachita, and Cordilleran
  c. Appalachian, Silurian, and Cordilleran
Coco   38   1 Reply
6 years ago
Long scratches formed on bedrock when a glacier moves over a land surface are ____.
Long scratches formed on bedrock when a glacier moves over a land surface are ____.
Long scratches formed on bedrock when a glacier moves over a land surface are ____.
  a. tillites
  b. moraines
  c. striations
  d. drumlin
  e. cirques
Zoeyismycat   93   1 Reply
6 years ago
During the Permian Period, the Permian Basin in west Texas was distinguished by____.
During the Permian Period, the Permian Basin in west Texas was distinguished by____.
During the Permian Period, the Permian Basin in west Texas was distinguished by____.
  a. orogenies
  b. volcanoes
  c. very deep water conditions
  d. coal beds
  e. barrier reefs
keelyhawkins   124   1 Reply
6 years ago
Throughout the Late Paleozoic, Gondwana was located ____.
Throughout the Late Paleozoic, Gondwana was located ____.
Throughout the Late Paleozoic, Gondwana was located ____.
  a. at the North Pole
  b. in the Northern Hemisphere
  c. at the equator
  d. in the Southern Hemisphere
  e. spans the Northern Hemisphe
sopmit   86   1 Reply
6 years ago
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