GEOL1010 Hour Exam 2 19 Oct 2009 First question number is that of the Yellow test 10 1 Extensive normal faulting in an area is an indication of regional a tectonic compression b tectonic extension c metamorphism d tectonic shear e tectonic uplift 6 2 The Anatolian Fault trends east west across northern Turkey and has been responsible for several major earthquakes At this fault the northern block has moved to the west left and the southern block to the east right without much vertical movement This is an example of a a dip slip fault b left lateral strike slip fault c right lateral strike slip fault d thrust fault e reverse fault Questions 3 5 refer to the diagram below 3 4 5 7 3 In this type of fault the upper block has moved up along a low angle fault plane relative to the lower block This type of fault is a a reverse fault b thrust fault c normal fault d strike slip fault e nobody s fault 8 4 In this type of fault the upper block has moved up relative to the lower block This type of fault is a a reverse fault b thrust fault c normal fault d strike slip fault e not my fault 9 5 In this type of fault the upper block has moved down relative to the lower block This type of fault is a a reverse fault b thrust fault c normal fault d strike slip fault e your fault 11 6 The angle measured from the horizontal perpendicular to strike to any tilted planar feature in the rock such as bedding is the a inclination b strike c declination d dip e tilt 12 7 The age of most metamorphic rocks in Colorado is a less than 550 million years b more than 4 billion years d about 6000 years e less than 65 million years c between 1000 and 2000 million years 13 8 The Hadean Eon includes the time of the accretion of the planet up about 4000 million years ago and constitutes about what percentage of Earth history a 5 b 15 c 25 d 50 e 85 14 9 Dinosaurs roamed the land surface from about 250 million to about 65 million years ago This era is subdivided into the Triassic Jurassic and Cretaceous which together are known as the a Hadean b Proterozoic c Phanerozoic d Mesozoic e Pleistocene 15 10 Which of the following radioactive isotopes is formed in the atmosphere by cosmic ray bombardment a 14C b 40K c 87Rb d 238U e 235U 16 11 A proton in an atomic nucleus loses a positron positively charged electron and turns into a neutron Which of the following accurately describes beta positron emission a Atomic number unchanged mass number unchanged b Atomic number increases by 1 mass number unchanged c Atomic number decreases by 1 mass number unchanged d Atomic number increases by 1 mass number decreases by 1 e Atomic number increases by 1 mass number increases by 1 17 12 40K has a half life of 1 3 billion years and decays to 40Ar Why can t K Ar dating be used to date sandstone a 40K half life too short b 40K half life too long c No K in quartz or sandstone d daughter 40Ar not retained by quartz or sandstone e 40K can only be used to date organic K taken from the atmosphere by plants 18 13 A conglomerate formation has been intruded by a basalt dike The basalt was dated radiometrically at 78 million years Based on this date we can infer the conglomerate layer to be a more than 78 million years old b 78 million years old c less than 78 million years old d nearly 7000 years old e no inference is possible 19 14 If the amount of a radioactive isotope is 1 16 the amount originally present how many half lives have gone by a 2 b 3 c 4 d 8 e 16 20 15 A break in the sedimentary geologic record where the older rocks have been tilted and eroded prior to resumption of sedimentation is called an angular unconformity Such a break implies a a nearby subduction zone b major thrust faulting in the area c An asteroid impact in the area d a nearby volcanic eruption e A gap in the sedimentary record of 100 million years or more 21 16 Where in the solar system is the asteroid belt a Beyond Pluto in the outer solar system b Between the outer and inner planets c Between Earth and Mars d Between Saturn and Uranus e Inside the orbit of Mercury 22 17 Select the prediction s inconsistent with the Nebular Hypothesis a All planets should orbit the Sun in the same direction b All planets should orbit the sun in a roughly common plane c Inner planets should be enriched in volatile elements compared to the outer planets d All the above are predictions inconsistent with nebular hypothesis 23 18 The outer planets are a Earth Mars Jupiter Saturn d Jupiter Saturn Neptune Uranus b Mercury Venus Earth Mars e Venus Earth Mars Jupiter c Pluto and Charon 24 19 The Earth is about 12700 km 7950mi in diameter The moon is about 3470km in diameter and about 384 000 km away If the Earth were the size of a grapefruit 6 in or 15 cm diameter how big and how far away would the moon be a The size of a pea 6mm and about a foot 30cm away b The size of a cherry 2cm and 3 ft 1m away c The size of a golf ball 5cm and 10 ft 3m away d The size of an orange 10 cm and 20 ft 6m away e The size of a grapefruit 15cm and 30ft 10m away 25 20 The stable interior part of the continent is known as the a terrane b shield c craton d plume e orogeny 26 21 An episode of mountain building is known as a n a allocthon b horst c graben d craton e orogeny 27 22 A small slice of new continental crust added onto the margin of a continent is a n a accreted terrane b allocthon c shield d craton e epeirogeny 28 23 Gradual upward and downward movement of crust without extensive deformation is known as a an accreted terrane b allocthonous c orogeny d cratonic e epeirogeny 29 24 The Canadian Shield is a part of the a Rocky Mountain orogenic belt b continental hot spot d North American accreted terrane e Artic Ocean Basin c North American craton 30 25 The oldest true fossils on Earth are stromatolites which are mats of calcite produced by bacteria The oldest of these are about a 4 55 billion yrs b 3 4 billion yrs c 2 0 billion yrs d 545 million yrs e 6000 years 31 26 Which of the major divisions of life forms on Earth has membrane divided organelles and a cytoskeleton a archaea b bacteria c eukarya d viruses e They all do 32 27 Which …
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