Sea Change

Sea Change - 1 When were atmospheric CO2 levels like during the Cambrian Ordovician Silurian Devonian ca 543-360 Ma A Same as 1850 B Very low(180

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1. When were atmospheric CO 2 levels like during the Cambrian, Ordovician, Silurian, Devonian ca. 543-360 Ma? A) Same as 1850 B) Very low (180 ppm) C) Very high (10-20 X) D) Rising 2. When were the glaciations in the Paleozoic? A) Cambrian, Late Silurian, and Late Permian B) At the beginning and the end C) Late Ordovician, Late Devonian, Carboniferous-Early Permian D) There were minimal glaciations because CO 2 was very high 3. What caused the major Icehouse of the Carboniferous-Early Permian? A) Drawdown of CO 2 B) Evolution land plants C) Burial of organic carbon D) All of the above 4. What happened to O 2 in the atmosphere during the Carboniferous glaciation? A) It rose due to land plants B) It fell as CO 2 fell C) It fell because of burial of organic matter D) It remained unchanged 5. What is significant about the Carboniferous A) It is a major source of oil B) It is a major source of coal C) It was a major source of CO 2 to the atmosphere D) It was a major sink for O 2 6. What is the CAMP? A) Basalt flows of the Watchung Mountain and diabase sills of the Palisades B) It is a major sink for of CO 2 C) A large igneous province 65 million years old D) It was a major source for O 2 7. What was the Cretaceous a greenhouse world? A) Mean temperatures 4-6°C above present B) High (2-10 X) CO 2 C) Little to no ice sheets D) Warm high latitudes E) All of the above. 8. The extreme warmth of the Late Cretaceous “supergreenhouse” can be explained primarily by A) Changes in the position of continents B) High (2-10 X) CO 2 C) High sea level D) Lower continental elevation
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E) All of the above. 9. How high was sea level globally in the Cretaceous? A) 250 m B) 150 m C) 100 m D) 50 m 10. Why was sea level high globally in the Cretaceous? A) The continents sat lower B) Faster sea floor spreading rates C) Lower production of LIPS D) Large ice sheets 11. Which of the following is INCORRECT about sequence boundaries A) surfaces of erosion called unconformites B) building blocks of the stratigraphic record C) formed during sea level rise D) formed during sea level falls 12. What did sea level do during the Greenhouse world on the million year scale? A) Showed little variation since this was an ice-free world
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This note was uploaded on 01/21/2012 for the course GEOG 104 taught by Professor Miller during the Spring '11 term at Rutgers.

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Sea Change - 1 When were atmospheric CO2 levels like during the Cambrian Ordovician Silurian Devonian ca 543-360 Ma A Same as 1850 B Very low(180

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