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Karangbolong High is very large karst area which is suitable to be an object <br /> <br /> <br /> <br /> <br /> <br /> research of limestone. However, the research which is related to limestone is very <br /> <br /> <br /> <br /...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/17886 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Karangbolong High is very large karst area which is suitable to be an object <br />
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research of limestone. However, the research which is related to limestone is very <br />
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rarely to do in this area, so that geological mapping and limestone facies study was <br />
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undertaken in that area. <br />
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The research area is dominated by karst hills, which are characterized by <br />
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pepino hills, cave, and underground river. Besides that, in the research area can be <br />
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seen cuesta hills, volcanic hills, intrusion hill, and alluvial plain. <br />
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Research area consists of six rock units. The first unit is tuff unit which is the <br />
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oldest rock in the research area aged Late Oligocene - Early Miocene. Next, andesite <br />
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unit has formed which is presented from a feeder dyke then intrude the oldest unit, <br />
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tuff and become a lava in surface. After that, depositional process continue to the <br />
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deposition of massive limestone unit unconformably which is onlapped on tuff unit, <br />
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this unit aged Middle Miocene and deposited in lagoon to platform margin. Then, <br />
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deposition of bedded limestone unit is occured at Middle Miocene in slope - toe of <br />
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slope environments. After that, at Late Miocene - Early Pliocene, the deposition of <br />
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marl - limestone unit is occured in deep shelf environment. <br />
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The first deformation is occured locally after deposition of marl - limestone <br />
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unit, resulting the normal faults in the research area. Then, the second deformation is <br />
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occured during Plio - Pleistocene, which is categorized as regional deformation and <br />
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resulting a reactivation of normal faults to strike-slip faults in the research area. <br />
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During Pleistocene - Recent, exogenous processes, such as weathering, erosion, and <br />
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dissolution still ongoing, so that controlled the morphology formation of the research <br />
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area until like now which is followed by deposition of Alluvial Unit with fluvial <br />
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depositional mechanism. <br />
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Limestone facies on the research area consists of four facies, which is related <br />
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to the depositional environment, namely platform interior open marine facies, <br />
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platform margin facies, slope - toe of slope facies, and deep shelf facies. Carbonate <br />
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platform type of research area is isolated platform . |
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