MAR GEOL AND GEOPHY
MAR GEOL AND GEOPHY ESS 410
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This 3 page Class Notes was uploaded by Miss Jeanette Keebler on Wednesday September 9, 2015. The Class Notes belongs to ESS 410 at University of Washington taught by Staff in Fall. Since its upload, it has received 10 views. For similar materials see /class/192670/ess-410-university-of-washington in Earth And Space Sciences at University of Washington.
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Date Created: 09/09/15
OceanESS 410 Fall 2007 Here is a list of topics that might come up on the Final it covers only the 2le half of the class Describe with label sketches the 3 basic fault types Class 21 PDF le page 1 upper right and the de nitions of fault strike dip and rake page 1 lower left Explain the physical concepts underlying Pwave rst motion focal mechanisms Class 21 PDF file page 2 top left Explain the ambiguity in a focal mechanism solution page2 top right Plotting compressional and dilatational ray takeoff directions and two orthogonal fault planes using a stereographic projection Class 21 PDF and Exercise 10 Reading approximate fault strikes and dips from beach ball plots and interpreting the fault time normal reversethrust strikeslip Exercise 11 Interpreting focal mechanisms in terms of plate boundary processes Exercise 11 Draw a labeled diagram showing the major processes in an oceancontinent subduction zones earthquakes shallow and deep dehydration melting volcanism volcanic arcs Class 24 PDF page 2 top left Describe the subduction zone processes that lead to growth of continents listed in Class 24 PDF page 1 lower left and illustrated on the following pages What is the Wilson cycle Class 24 PDF page 2 bottom right page 4 What are the two forces acting on a slab Explain why theoretical considerations predict that the slow convergence of old oceanic plate will lead to a steep subduction angle Class 24 PDF page 5 top Does the data from subduction zones support this prediction Exercise 12 Ifnot can you suggest reasons why not Explain with the aid of a sketch the concept of back arc spreading Class 24 PDF page 6 and why slow subduction of old plate favors back arc extension What is the de nition of IgtClass 3233 page 1 top right You can manipulate the equation on that slide to show that D 27 mm so you should be able to derive the grain size without the table Describe the concept of settling velocity What two forces are balanced Class 27 page 3 I will not expect you to remember the equation for settling velocity on page 3 lower left of the PDFfile but will expect you to remember anal understand what the symbols stand for eg R v anal to be able to use the equation to estimate a settling velocity if it is given to you in a question What are the limitations of the theoretical Stokes settling velocity page 3 lower right OceanESS 410 Fall 2007 What are the three regions of the bottom boundary layer Class 27 page 4 top right Why is it not practical to use the equations for the inner region to obtain the bottom shear stress Class 27 page 4 bottom right Estimate the bottom shear stress given at least two measurements of mean uid velocities a different depths off the sea oor ie remember to plot ln 2 versus the u take the slope and estimate u given that the and then get the stress from Class 27 page 5 bottom right and Exercise 13 I expect you to remember all the equations you need for this process How to use the Shields curves to determine if sediments will move and how to determine ifthe transport will be as a suspension or bedload Class 27 page 6 and Exercise 13 I will not expect you to remember the expressions for the Shield stress andparttcal Reynolds numbers but you need to know what all the symbols stand for Interpret an Xradiograph identifying regions of fine and coarse grained material zones of bioturbation crossand parallel bedding Exercise 14 Draw a cross section of a turbidite ow showing uid ow directions the location of erosion and deposition Exercise 14 Draw a crosssection through a classical turbidite deposity Exercise 14 Figure 3 Draw a labeled crosssection of the sea oor at a continental margin showing the location and definition of the continental shelf slope and rise and the abyssal plain Class 31 PDF page 1 bottom left Explain the concept of wave base Class 31 PDF page 2 bottom left Explain why muds are deposited in the midshelf off the coast of Washington What processes prevent deposition on the inner and outer shelf Exercise 15 and Class 31 PDF page 2 bottom amp page 3 top left Explain brie y in how 210Pb dating works I do not expect you to remember any of the equations so an answer in words could get full marks What is meant by supported and unsupported 210Pb Know to get a sedimentation rate from measurements of 2lOPb activity at different depths in recent sediments Class 31 PDF page 6 top and Exercise 15 Describe the concept of accommodation space and its application to sequence stratigraphy Class 33 PDF page 1 bottom right and beyond What processes other than sedimentation lead to changes in the accommodation space Describe the concept and causes of eustacy Class 33 PDF page 2 bottom right 3 top left OceanESS 410 Fall 2007 Draw a diagram to illustrate the difference between a prograding and aggrading clinoforms and explain how they relate to changes in sea level 33 PDF page 3 bottom ri ght Describe brie y how the pattern of sediment deposition on a margin varies over a eustatic cycle ie 39 39 39 J 39 1 VV tand 39 Class 33 PDF page 4 Interpret a crosssection of sediment layers in terms of sealevel changes Exercise 16 How do the turbidity currents and debris ows differ Class 38 PDF page 1 bottom right and page 2 upper right Explain the role of submarine canyons in transporting sediments to the deep ocean Exercise 17 and Class 38 PDF Do they play a larger role during glacial highstands on interglacial periods
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