Structural Geology

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3. Now draw two lines which are tangent to the Mohr circles, one above and one below the 0. axis. These lines define the 'Coulomb failure envelope'. A Mohr circle that plots inside the envelope, without touching it, represents a state of stability with no failure; Mohr circles which plot on or beyond the envelope represent unstable stress states, which exceed the rock rupture strength and will result in failure by fracturing. Label these zones on your plot.


Using the failure envelopes you have constructed, predict whether the Berea sandstone would fail under the following conditions of Pc and 0... Also indicate what type of deformation you would expect to see in each core sample (Le. brilllc or ductile). Do this on a new 0.. vs. ‘t graph using the same scale and the failure envelopes traced from your first plot.


6. Based on the experimental data, what orientation would you expect naturally occurring brittle shear fractures and ductile shear zones to make with the principle compressive stress direction o₁? Draw some sketch diagrams to illustrate this.


A. We have found that the coordinates of the drainage grate are 40° 51.593' N, 74° 11.936' W, and the coordinates of the home plate are 40° 52.117' N, 74° 11.711' W. So, we have a right triangle with the points (40° 51.593' N, 74° 11.936¹ W; 40° 52.117' N, 74° 11.711' W; 40° 51.593' N, 74° 11.711' W). The length of the side A (40° 51.593' N, 74° 11.936' W; 40° 51.593' N, 74° 11.711' W) is 1040.80 ft. The length of the side B (40° 52.117' N, 74° 11.711' W; 40° 51.593¹ N, 74° 11.711' W) is 3180.02 ft. Hence, the straight-line distance is C = √1040.80² +3180.02² = 3346.01 ft.


We have found that coordinates of the letter "H" are 40°51.485'N, 74°12.080' W, and the coordinates of the manhole cover are 40°51.800'N,74°11.883'


Write a scientific text How would you recognise a beach environmental in cores or outcrops? Include sedimentology behind it and use some of your field trip experience from Sola beach! Field trip experience notes: - Beach dune ridge - Parallel flow - Fine sand - Parting lineation stripes - Linguoid out of phase - Tiny shells - Delta - Types of dunes - Tides


The Tapeats Sandstone is foliated.


When you look at a geologic map, how can you determine what is the oldest rock layer present?


Save AnswerWhat kind of plate boundaryO Smartwas responsible for the emplacment of the Smartville Complex? toO Smart O Convergent O Transform Divergent


A. Drainage Basins 1. Using the Scrabble creek map provided in the assignment below to draw in and label the drainage boundary and stream order of the basin. 2. What drainage pattern is present within the scrabble creek basin? 3. What is the arrow indicating on the scrabble creek map? 4. D. Drainage Density and Texture 1. Examine the topographic map of Ben Nevis, Scotland as well as the Google Earth images above,or you can visit on google earth (56° 47'48" N, 5° 00'12" W; be sure to zoom out and look at patterns across the whole area). a) How would you describe the density and texture of the drainage channels in this area? ___________________________________________________ b) What might this tell you about the bedrock? ___________________________________________________ c) What might it indicate about the annual precipitation? 2. Compare the density of drainage of Ben Nevis, Scotland (56° 51'19"N, 5° 06'27"W) with that of Hay River, Alberta (60° 40'30"N, 115° 55'58" W). a) Which is higher? b) Give two explanations for the density in the Hay River area? i.___________________________________________________ ii.___________________________________________________ b) What does this drainage pattern indicate about the probable source of the river? ___________________________________________________ D. Drainage Density and Texture 1. Examine the topographic map of Ben Nevis, Scotland as well as the Google Earth images above or you can visit on google earth (56° 47'48" N, 5° 00'12" W; be sure to zoom out and look a patterns across the whole area). a) How would you describe the density and texture of the drainage channels in this area? ___________________________________________________ 1. Using the method outlined in the reading, complete the following bifurcation tables for the Geo River and Scrabble Creek basins. 2. What order of Basin is this? C. Drainage Patterns 1. Using google Earth (https://earth.google.com/web/) and the coordinates provided make your way to these locations and identify the prominent drainage pattern in these regions b) Donalda, Alberta (52° 34'49"N, 112° 37'15"W), ___________________________________________________ What is the best term you could use to describe the drainage pattern South Westof the town on Donalda? ___________________________________________________ c) Hawaii (20° 44'15" N, 156° 12'30"W),What pattern best describes the streams around the volcanic peaks? ___________________________________________________ d) Ben Nevis (56° 51'19"N, 5° 06'27"W),What is the overall drainage pattern in this area? ___________________________________________________ e) Hay River, Alberta (60° 40'30"N, 115° 55'58"W),This river is a classic example of what pattern of drainage? ___________________________________________________ 2. Using google Earth and the coordinates provided make your way to Ramparts River, NWT (65°43' 55" N 130° 15'10" W) to answer the following questions: a) What pattern of drainage dominates the river ___________________________________________________ b) What does this drainage pattern indicate about the probable source of the river? ___________________________________________________ 3. Using the Google Earth image provided of Antelope Peak, Arizona above. a) Examine the area around Antelope Peak. How would you describe the density and texture of the drainage pattern here? _____________________________________________________ b) This area is semi-desert. Can you explain why the texture is of the type you stated in the previous question? _____________________________________________________


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