Chapter 14 - Multiple-Choice Questions 1) The concept that...

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Multiple-Choice Questions 1) The concept that rocks of the crust and upper mantle are floating in gravitational balance is known as __________. A) isotropy B) isostasy C) isobration D) isomonism Answer: B Diff: 1 2) According to the crustal, gravitational balance idea, which of the following statements is true? A) A mountain range undergoing erosion should uplift slowly. B) As a continental ice sheet thickens, the land beneath should uplift slowly. C) A basin being filled with sediments should uplift slowly. D) The crust is thicker under a low lying plain than under a high standing plateau or mountain range. Answer: A Diff: 1 3) The Valley and Ridge Province of the Appalachian Mountains is characterized by __________. A) sedimentary strata folded in late Paleozoic time B) deeply eroded, late Paleozoic, fault-block mountains and valleys C) stratovolcanoes above a volcanic arc D) crustal stretching as Africa and Eurasia migrated away from North America Answer: A Diff: 1 4) Which of the following best describes the geology of the Pacific coastal regions of western North America including Alaska? A) An earlier, continental margin broke apart and the geologically similar fragments were tectonically reassembled. B) Geologically different, microcontinent-sized fragments and terranes, formed elsewhere, were tectonically accreted to North America. C) A massive subcontinent of old igneous and metamorphic rocks (similar to India) was accreted during late Proterozoic time. D) Tightly folded, continental shelf strata were squeezed between North America and the convergent, Bering-Siberian subcontinent. Answer: B Diff: 2 5) A(n) __________ is a thick accumulation of sediments and small, tectonic blocks formed of material scraped off a descending, lithospheric plate. A) mass movement complex
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B) continental shelf, terrain complex C) accretionary-wedge complex D) subterranean-accumulation complex Answer: C Diff: 1 6) How were the Ural Mountains (Russia) formed? A) Large, fault blocks of Archean igneous and metamorphic rocks rose as the former Asian and European plates joined to form Eurasia. B) Marine strata in a basin between the former Asian and European plates were squeezed, folded, and uplifted as the two joined to form the Eurasian plate. C) Active, normal faulting is elevating large, mountain blocks above the level of the vast plains on both sides of the range. D) An active volcanic arc, similar to the present-day Aleutian Islands, rose along the southern edge of the Eurasian plate. Answer: B Diff: 1 7) The ranges of the central and southern Rocky Mountains __________. A) generally contain thick sections of highly folded, Paleozoic, marine strata B) developed in response to a continent-continent collision C) are uplifted, blocks that typically have cores of Proterozoic igneous and metamorphic rocks D) the Paleozoic and Mesozoic sedimentary rocks were elevated and compressed into tight folds; but the deeper, harder rocks of the continental crust were pulled apart by
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This note was uploaded on 07/16/2009 for the course GEOL 100 taught by Professor Johntrib during the Spring '09 term at Maastricht.

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Chapter 14 - Multiple-Choice Questions 1) The concept that...

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