oxidined to for future ize and A boulder conglomerate c) pebble co d) pebble san
ID: 115206 • Letter: O
Question
oxidined to for future ize and A boulder conglomerate c) pebble co d) pebble sandstone e) pebble breccia coal and hydrocarbon bj Fluvial (stream), alluvial there is 76. lonathan, a chvil engineer, took a geology course in college and immediabely recogniaed the bedrock on his worksite as sandstone. Looking very closely, he could see some grains with definite cleavage along with the quartz grains. What rock type did he fied? b) Schists are formed at low pressures (P) and temperature at high T and P whereas grenses ire formed c) granular soil are dflficult to weather because they consist of recrystallized quartz crystals e) arkose. 77. Limestone, chert, coal, and oll shale. What type of sedimentary rocks are these? 83. Idaho minerals hematite and limonite. garnets are very rich in iron. When they weather, they form the insoluble iron This is an example of what chemical c) clastic weathering process? e) biogenic c) organic acids d) oxidation sedimentary rocks are these? 84 What effect would an increase in rainfall have on global temperature? a) evaporites c) clastic ej chemical b) Increased e because the rain will release carbon from the lIthosphere by n an oxidizing environment? bj In oll shales, the iron is pyrite, a suifide; in fluvial c) in oil shales, the iron is d)lnod shales, the iron is Pfte, asutde, inred beds, the ron s iemaene, anda de 85. The earth is covered with clay minerals. Why? a) Clay minerals are volcanic in origin and volcances have been erupting for 4 5 billion years on Earth c) Clay minerals are continually formed from the weathering of slicate minerals, especialy 80. Bob picks up a rock that has a definite layered texture but is full of garnets, mica along kyanite crystal Odds are, what rock type has Bob found ne feldspar and ci granite el schist.Explanation / Answer
ANSWER-
(75)C--Pebble conglomerate formed-during diagenesis of well sorted pebble with clast the sie of pea.Pebble conglomerate a coarse-grained clastic sedimentary rock that is composed of a substantial fraction of rounded to subangular gravel-size clasts, larger than 2 mm (0.079 in) in diameter.
(76)e--- He definetally find the arkoses.That shows the cleavage along the quartz vein.
(77)d- These all rockes limestone ,chert,coal and oil shale are CHEMICALLY FORMED ROCKS.
Like limestone formed by the chemically precipitated of calcium corbonate from sea water.
coal containing organic matter formed by CHEMICALLY -ORGANIC process .
(78)E- Limestone in the form of cave formation and hot spring CHEMICALLY PRECIPITATED rock, developed in the form of stalactite and stalagmites .So stalatite grow in downwars sequence from the roof of cave and stalagmites form upward growing structure from the floor to roof of the cave.These two feature are developed by under ground water or solution water.
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