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A sandstone bed dipping 30° has an outcrop width of 20 m in a flat terrain. What is the true thickness (in m) of the bed? GATE-Geology and Geophysics-Question-20121 AnswerA sandstone bed whose attitude is 090°, 30° is exposed on a flat surface. The true thickness of the bed is 100 m. The width of the outcrop of the sandstone bed along a N-S traverse on the ground is ________ m. -gate Geology & Geophysics 2017 1 AnswerMetal content (in metric tonnes) of an ore having specific gravity and assay values of 2.86 and 1.49 % respectively in a mining block 40 m long, 30 m wide and with an average thickness of 2.13 m is _______. (-Gate geology and geophysics 2014)1 AnswerWhich one of the following can be estimated from SP log against a saline-water saturated sandstone formation encountered in a well? GATE-Geology and Geophysics-Question-20121 AnswerA confined sandy aquifer has a thickness of 10 m and transmissivity of 0.75 m2 per day. Its hydraulic conductivity is _____ m/day. (-Gate geology and geophysics 2014)1 AnswerArrange the following formations sequentially from older to younger: GATE-Geology and Geophysics-Question-20121 AnswerWhich one of the following is the best suited mining method for a low-dipping, tabular-shaped, hard and compact ore body with 2 to 2.5 m thickness sandwiched between hard and compact roof and floor rock? (-Gate geology and geophysics 2014)1 AnswerWhich one amongst the following rocks commonly has highest unconfined compressive strength? GATE-Geology and Geophysics-Question-20121 AnswerDetermine the correctness or otherwise of the following Assertion [a] and Reason [r]. GATE-Geology and Geophysics-Question-20121 AnswerVertical exaggeration commonly occurs during stereo-viewing of aerial photographs. Where does it occur? GATE-Geology and Geophysics-Question-20121 AnswerAssertion (a): The 18O/16O ratio in natural systems can be used as a thermometer. Reason (r): The fractionation of 18O/16O depends on temperature. -gate Geology & Geophysics 2017 1 AnswerAn igneous body with a flat top and a concave-upward base is known as: (-Gate geology and geophysics 2014)1 AnswerAfter migration, an anticline observed on an unmigrated seismic section becomes -gate Geology & Geophysics 20171 AnswerCompute the coefficient of anisotropy from the following parameters estimated from a Vertical Electric Sounding (VES) survey. (-Gate geology and geophysics 2014)1 AnswerIn a metamorphic terrain, crenulations at the hinge zone of a fold along with the development of axial plane foliation is an evidence of: (-Gate geology and geophysics)1 Answer The Königsberger ratio, Qn, related to magnetization of rocks is very low (Qn<<1) for -gate Geology & Geophysics 20171 AnswerPoint bar deposit is associated with GATE-Geology and Geophysics-Question-20121 Answer Which of the following is NOT a variety of silica (SiO2)? GATE-Geology and Geophysics-Question-20121 AnswerWhich type of VES curve is obtained for a three-layered earth model consisting of wet shale (top layer), poorly water saturated sandstone (middle layer) and impermeable granite (bottom layer)? -gate Geology & Geophysics 2017 2 AnswerA clean, thick and hydrocarbon bearing sandstone bed can be identified through a combination of -gate Geology & Geophysics 20171 Answer