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Which 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 AnswerIf the total volume of water in the Earth’s atmosphere, estimated to be about 1.29 x 104 km3 , were to completely precipitate and uniformly cover the Earth’s surface, estimated to be 5.1 x 108 km2 -gate Geology & Geophysics 2017 1 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 AnswerG iven that the velocity of P-waves in a sandstone matrix is 5600 m/s and that in oil is 1200 m/s, the velocity of P-wave propagation in oil saturated sandstone with 30% porosity is ___________ m/s. (Use Wyllie time average equation.)0 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 AnswerA 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 AnswerWhich one of the following is the youngest marine formation in the Himalaya? (-Gate geology and geophysics 2014)1 AnswerArrange the following formations sequentially from older to younger: GATE-Geology and Geophysics-Question-20121 AnswerWhich one amongst the following rocks commonly has highest unconfined compressive strength? GATE-Geology and Geophysics-Question-20121 AnswerA predominantly siliciclastic Mesozoic stratigraphic unit in mainland Kutch containing Trigonia and abundant plant fossils including Ptillophyllum is -gate Geology & Geophysics 2017 1 AnswerA 15 Volt power supply is applied across a cylindrical container (diameter = 0.20 m and length = 0.50 m). Currents of 750 mA and 500 mA are measured when the container is filled with (i) brine only, and (ii) rock sample fully saturated with brine, respectively. The formation factor of the rock sample is __________.0 AnswerWhich one of these is NOT a source of sufficient water supply but can transmit certain quantity of water on a regional scale due to leakage? GATE-Geology and Geophysics-Question-20121 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 AnswerA ssertion (a): The Static Self-Potential for a thick, clean freshwater bearing sandstone formation is positive. Reason(r): Resistivity of the formation water is less than the resistivity of salt water mudfiltrate.0 AnswerThe following gamma ray (GR) log data are recorded in a borehole: GR log value against a formation = 30 API units, Maximum GR log value = 45 API units, Minimum GR log value = 20 API units. (-Gate geology and geophysics 2014)1 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 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 Answer The Königsberger ratio, Qn, related to magnetization of rocks is very low (Qn<<1) for -gate Geology & Geophysics 20171 AnswerRephrase the sentence(GMAT) 1 Answer
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