Exam2 - Why is it a poor idea to use limestone for...

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Why is it a poor idea to use limestone for tombstones in a wet hot area like the Amazon rainforest? A) Because limestone weathers at a very fast rate B) Because limestone weathers at a very low rate C) Because limestone does not weather D) Because limestone is an ugly rock to be used in tombs Ans: A Why is Walther’s rule important? A) Because present-day sedimentary environments are different from ancient sedimentary environments B) Because sedimentary environments located beside each other are not preserved in the fossil rock record and there has to be a way of working out what the ancient environments were like C) Because Walther's Rule relates ancient sedimentary environments preserved vertically in the sedimentary record, with present environments that are located beside each other D) None of above Ans : C Why is quartz one of the most weathering-resistant minerals? A) Because it crystallizes at temperature and pressure conditions very similar to those of the Earth’s surface, making quartz resistant to chemical weathering B) Because the atoms that compose Quartz are bonded by covalent bonding, making quartz resistant to physical weathering C) A and B D) None of above Ans: C For the figure shown, what is the order of events? I Deposition of beds A. II Deposition of beds B. III Magmatic intrusion. IV Angular unconformity A) I, II, III, IV B) II, I, III, IV C) II, IV, I, III D) II, I, IV, III Ans: C
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The figure above represents a(n) _____________ which is produced by folding of _________ rocks under compression A) Antcline. Brittle B) Antcline. Ductile C) Syncline. Brittle D) Syncline. Ductile Ans: B The study of metamorphic rocks is useful to a geologist because A) Metamorphic rocks can tell us about the pressure and temperature conditions at the time they were formed B) Metamorphic rocks can tell us about the pressure and temperature conditions at the present time C) Metamorphic rocks can tell us about the sedimentary environments at the time they where formed D) Metamorphic rocks can tell us about sedimentary environments at the present time Ans: A Which principle is used to explain that the deeper rocks in a sequence are older? A) Principle of original horizontality B) Principle of cross-cutting relationships C) Principle of Superposition D) Principle of Uniformitarianism Ans: C Why is polished granite more resistant to weathering than rough granite? A) Because rough granite has less total surface exposed B) Because polished granite has more total surface exposed C) Because polished granite has less total surface exposed D) Because polished granite has a protective coat Ans: C Why is quartz one of the most weathering-resistant minerals?
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A) Because it crystallizes at temperature and pressure conditions very similar to those of the Earth’s surface, making quartz resistant to chemical weathering B) Because the atoms that compose Quartz are bonded by covalent bonding, making quartz resistant to physical weathering C) A and B D) None of above
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This note was uploaded on 07/07/2009 for the course GEOL 1001 taught by Professor Baksi during the Spring '07 term at LSU.

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Exam2 - Why is it a poor idea to use limestone for...

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