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Plate 1 - Rock Slope Analysis Bench A and Bench B and General Conditions of Central Quarry - January 2000
<br />Morrison Quarry
<br />CAMAS /Cooley Gravel Division
<br />1999 DMG Annual Report
<br />Geotechnical Addendum
<br />March 2000
<br />I FCTF.ND
<br />lStrike (degrees - azimuth) and dip of joint (degrees from horizontal)
<br />Tf. A
<br />Strike (degrees- azimuth) and dip of foliation joint (degrees from horizontal)
<br />pis
<br />Strike (degrees - azimuth) and dip of vertical joint (degrees from horizontal)
<br />235
<br />-- +illt` -- Axis of syncline fold (plunge direction indicated by arrow)
<br />Axis of anticline fold (plunge direction indicated by arrow)
<br />Location Description
<br />A Pour quality rock, foliation dipping into hill
<br />B Dike (8 ft wide, massive, regmatite composition)
<br />C Dike (5 It wide, slightly to moderately fractured, mafic composition), N83 0W, 84 0SW
<br />D Dike (6 It wide, highly fractured, mafic composition), N75 0E, 82 0SE
<br />E Dike (4 It wide, massive, mafic composition), N76 °E, 80 °SE
<br />F Dike (4 in. wide, highly fractured and weathered, mafic composition), N80 °E, 82 0SE
<br />G Major Fracture (100 ft long, continuous) dipping horizontal or 10° out of slope.
<br />If Dike (10 ft to 15 ft wide, moderately fractured, mafic composition), N84 0W, 84 0SW
<br />I Area containing massive, unjointed rock with foliation dipping into highwall at 300
<br />J Fault (2 ft offset, trending parallel to the slope, appears to dip into slope)
<br />K Major Fracture (continuous with spacing up to I in) Nl0 °E, 36 °NW
<br />L Extension Cracks (on Bench A, 0.5 ft to 7 B from highwall crest, I to 3 in wide, 50 ft long)
<br />M Dike (3 It wide, highly fractured and weathered, mafic composition, hematite staining), N70 °E, 73 °SE
<br />N Extension Cracks (on Bench A. 10 ft mI5 It from highwall crest, 2 to 4 in wide, 80 ft long)
<br />O Dike (5 ft wide, moderately fractured, mafic composition, hematite staining), N75 °E, 74 °SE
<br />P Extension Cracks (on Bench A, 1 ft to 5 ft from highwall crest, I to 3 in wide, 50 ft long)
<br />Q Extension Cracks (on Bench A, 1 ft to 5 ft from highwall crest, I to 3 in wide, 25 ft long)
<br />R Major Fracture (continuous, 30 -40 ft long, possible failure area) N53 °E, 35 °NW
<br />S Dike (3 ft wide, massive, mafic composition, hematite staining), N64 °E, 79 °SE
<br />T Potential Wedge Failure ( on arm of anticline for 50 -60 ft with foliation dipping perpendicularly out of the slope at 300
<br />U Major Fracture (continuous, 100 ft long, 30 ft up from bench on highwall) N00 °E, 0 -10 0W
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