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This 3 page Study Guide was uploaded by CHANCE on Monday March 9, 2015. The Study Guide belongs to ESS 101 at University of Washington taught by Swanson, Terry W in Winter2015. Since its upload, it has received 321 views.
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Date Created: 03/09/15
ESS Final Study Guide Igneous RocksVolcanism 1 A volcanic neck is formed blank and the surrounding rock erodes away When a magma body solidifies within the vent of a volcano 2 The most recent eruption 1980 of Mt St Helens was blank previous eruptions during the Holocene last 10000 years Greater than 3 Lahars generated from Mt Rainier have Fowed as far as Tacoma within the last 5000 years 4 Pillow basalts form when basalt is Erupted into water 5 How can a geologist determine the source volcano of a dated ash layer in several local lake cores Ony answers a amp b are correct the ash layer will thicken in the lake cores closest to the source volcano the grain size within the ash layer will increase in the lake cores closest to the source volcano 6 The effusive eruptions on Iceland Ony answers aampb are correct are composed of basaltic composition lava largely destroy structures without fatalities 7 Who was one of the only survivors of the St Pierre Nuee Ardente Raou Sarteret 8 The 1980 eruption of Mt St Helens blank than previous large eruptions in the Holocene Greater 9 Plutons may be composed of blank igneous rock All of the above answers are correct mafic felsic intermediate 10 If a horizontal layer of volcanic tephra lies between two horizontal sedimentary strata the principle by which the relative ages of each of these layers could be determined is The Principle of Superposition Weathering 1 Besides frost wedging which of the following are examples of mechanical engineering Only answers a amp b are correct bioturbation and spalling of boulders from range fires 2 H ions utilized in hydrolysis weathering reactions come from Carbonic acid 3 Over time angular joints will blank due to surface weathering Become rounded 4 Frost wedging occurs in rock because Water expands when it freezes to form ice 5 Joints facilitate weathering because blank Only answers b amp c are correct permit water and other chemical agents to penetrate below the surface provide more surface area for the weathering front to attack 6 Rivers erosion tends to be greatest blank fold structure Near the axis of 7 The zig zag pattern of rock units than can be observed while flying over Pennsylvania is due to Erosion of plunging tilted anticlines and synclines 8 What does the presence of goethite tell you about the drainage conditions of the soil The soil is saturated during some point of the year 9 Where is isostatic recovery from ice loading still occurring today in North America Only answers aampc northern Great Lakes Hudson Bay Canada 10 Which rock type will tend to produce sinkholes in Florida from solution weathering Limestone 11 Frost wedging would be most prominent in Sub polar latitudes where temperatures fluctuate around the freezing temperature during certain seasons 12 Which soil horizon contains the most organic matter Horizon A 13 Spheroidal weathering occurs because Rounding occurs because the edges and corners of the rock surface offer more points of attack to chemical weathering processes than its planar surface 14 Zigzag outcrop patterns are the result of Erosion of plunging anticline and syncline 15 Over time angularjoints will become rounded due to surface weathering because The corner of the angularjoint is weathered faster than the joint edge or face 16 Why does calcium carbonate not accumulate in Puget Lowland soils All of the above the soils are too young the climate is too moist and calcium and bicarbonate ions remain in solution the soils are not derived from sediment with calcium bearing minerals 17 Soil profiles can form Only answers aampb are correct in residual bedrock in unconsolidated sediment
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