KEY Exam 3 F07 416M - Geo416M Exam 3 November 15, 2007 1. A...

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1 Geo416M Exam 3 November 15, 2007 1. A consideration of the standard carbonate facies belts along a depositional profile a. will help explain the changes in growth forms of coral along a depositional profile b. is consistent with the observation in ancient outcrops of massive bedding (i.e., lacking stratification) at the shelf margin between well-bedded platform and slope strata c. will make things clear when you stumble upon automobile-sized clasts of boundstone at the toe of slope in a sedimentary basin d. all of the above e. none of the above 2. True (A) or False (B) The preference of the benthic green algae Halimeda for the open Florida Shelf today combined with the occurrence of Halimeda in the lower part of the Holocene section in Florida Bay, indicates that Florida Bay was a more open marine environment earlier in the Holocene 3. With regard to the Principle of Uniformitarianism, the statement in the question above can be best restated as a. “In the Holocene of Florida Bay, the present is the key to the past, maybe” b. “In the Holocene of Florida Bay, the present is the key to the past, no way” c. “In the Holocene of Florida Bay, the present is the key to the past, highly likely” d. “In the Holocene of Florida Bay, the present is the key to the past, absolutely no doubt” Consider hypothetical tidal flats in arid and humid settings. For the following features, indicate whether it is more common in arid (A) or humid (B) tidal flat settings, or whether you would expect it to be the same in each setting (C). 4. Blue green algae in the supratidal environment B 5. The intertidal zone C 6. Cementation A 7. Control of exposure index on distribution of fauna, flora, sedimentary structures in all tidal flat subenvironments C 8. The modern shelf margin in the Florida Shelf a. contains abundant boundstones and skeletal grainstones b. contains abundant coated-grain grainstones c. all of the above d. none of the above 9. Salinities in shallow waters on Great Bahama Bank are a.highest at the end of the dry season b.highest at the end of the wet season c.one factor that can explain the distribution of ooid shoals vs. reefs at shelf margins in this region d.all of the above e. a and c only 10. Factors that control the distribution of ooid shoals vs. reefs at shelf margins in this region include a. seasonal changes in salinity b. variations in WIND FREQ %
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2 c. variations in WAVE ENERGY FLUX d. all of the above e. a and b only 11. Normal seawater salinity is a) 35 parts per thousand ; b) 35 parts per million; c) 35 per cent; d) 200 m The questions below refer to the figure below from Scoffin (1987). 12. The ‘thinly laminated’ deposits
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This note was uploaded on 03/19/2008 for the course GEO 416M taught by Professor Staff during the Spring '08 term at University of Texas at Austin.

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KEY Exam 3 F07 416M - Geo416M Exam 3 November 15, 2007 1. A...

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