Geography
* Chalk deposits left by the Western Interior Seaway during this period formed the Smoky Hills Chalk in America, and the Dover Cliffs chalk in Europe was also formed at the same time* eruption of the Deccan traps may have contributed to the end of this geologic period, during which rudists were the most important reef-builders in the Tethys Ocean* White Cliffs of Dover formed during this period, whose characteristic chalk deposits give it its name, and the Chicxulub* Coccoliths formed the chalk beds that name this period of time.* Alvarez hypothesisuses shocked quartz and iridium concentration to explain how this period of time ended.spread of () flowering plants which first appeared in this period, whose geologicstrata ends at the K-T boundary* Placental species coexisted with dinosaurs during, for 10 points,what last period of the Mesozoic era whose dinosaur species included T-rex?* Pierre Shale are two formations dating from this period, during which the Tethys Ocean became a shallow sea* Laramide orogeny [aw-RAH-jeh-nee] began lifting the Rocky Mountains in this period that also saw the evolution of the first mammals and flowering plants* This period closed with the eruption of the Deccan Traps in India, which may be related to an impact that resulted in a thin layer of iridium forming between this period and the one that follows it. The Alvarezes posited that the KT boundary marks the stratigraphic border between this period and the Tertiary.* name this period in which the T. Rex lived, the last period of the Mesozoic era that probably ended with a big meteor impact at Chixtulub.* Germany's Maastricht Formation contains fossils from this geologic period, which saw the split of Africa and South America* geologically significant both for the large amounts of chalk formed during this period and for a layer of iridium known as the K-T boundary, which is believed to have been deposited by an asteroid* final period of the Mesozoic Era, whose end saw the mass extinction of the dinosaurs.* Berriasian Age to the Maastrichtian Age* first ap- pearance of ants, butterflies, and flowering plants. Though life generally increased throughout its eighty million years, its end was marked by many extinctions, especially for large land animals.* age that followed the Jurassic Age, the last part of the Mesozoic Era
e) Which of the following statements is true? Choose one:A. A stream that swings back and forth in snake-like curves is called a braided stream.B. A meander bend that gets cut off from the stream is called a point bar lake.C. A stream is any channelized body of running water.D. The efficiency of downcutting depends on the velocity of stream flow, not the strength of the substrate f) g) Stream piracy Choose one:A. results when headward erosion causes one stream to intersect the course of another stream.B. causes the pirate stream to decrease its discharge and eventually dry up, while the captured stream continues flowing.C. can leave behind a dry channel through a high ridge called a water gap.D. occurs frequently throughout recorded history, with a case reported in 2016 in the Yukon. h) The channeled scablands Choose one:A. are an area of unusual topography in Alaska.B. were flooded because successive glacial dams of Glacial Lake Missoula broke.C. were created by great floods about 110,000 years ago.D. are the result of a slow-onset flood. i) j) While flash floods can take place in any climate, they are especially dramatic in which type of climate? Choose one: polar, tundra, tropical, wet dry, arid mild, humid, subtropical
Part C-Differentiating between Serpentinite and Chlorite Schist The difference between serpentinite and chlorite schist is that View Available Hints) chlorite schist effervesces with application of dilute HCl, whereas serpentinite does not chlorite schist can be scratched by a fingernail, but serpentinite cannot chlorite schistis foliated, whereas serpentinite is unfoliated serpentinite effervesces with application of dilute HCI, whereas chlorite schist does not the layers of serpentinite are more flat than the layers of chlorite schist, which are noticeably wavy the layers of chlorite schist are more flat than the layers of serpentinite, which are noticeably wavy serpentinite is foliated, whereas chlorite schist is unfoliated. serpentinite can be scratched by a fingernail, but chlorite schist cannot Submit Part D . Differentiating between Slate and Phyllite The difference between slate and phyllite is that View Available Hint(s) the layers of slate are more flat than the layers of phylite, which are noticeably wavy. slate is foliated, whereas phyllite is unfoliated. phylite effervesces with application of dilute HCI, whereas slate does not the layers of phyllite are more flat than the layers of slate, which are noticeably wavy. slate can be scratched by a fingernail, but phyllite cannot slate effervesces with application of dilute HCl, whereas phylite does not phylite can be scratched by a fingernail, but state cannot phylite is foliated, whereas slate is unfolated Submit