GEOLOGI DAERAH JATIGEDE DAN SEKITARNYA, KABUPATEN SUMEDANG, PROVINSI JAWA BARAT
Cisampih Fault Zone Hills Unit, Ciranggem Hogback Hills Unit, Kadu Homoclinic Hills Unit, Intrusion Hill Unit, and Alluvial Plains Unit. The geomorphic stage of the research area is mature and the drainage patterns are trellis, dendritic, and rectangular. The oldest rock unit in the research are...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/37291 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Cisampih Fault Zone Hills Unit, Ciranggem
Hogback Hills Unit, Kadu Homoclinic Hills Unit, Intrusion Hill Unit, and Alluvial
Plains Unit. The geomorphic stage of the research area is mature and the drainage
patterns are trellis, dendritic, and rectangular.
The oldest rock unit in the research area is the Middle Miocene Claystone
Unit which is deposited in the bathyal zone. In the Middle Miocene-Late Miocene,
the Sandstone-Claystone Unit was deposited above the Claystone Unit with the
depositional mechanism of gravity flow in the bathyal zone. On top of the
Sandstone-Claystone Unit, the Breccia Unit was deposited in Late Miocene with
the depositional mechanism of gravity flow in the upper bathyal-outer neritic zone.
In Pliocene-Pleistocene an uplift and compressional deformation occurred which
caused the research area became land and formed thrust fault, folds, and strikeslip
fault. In Pleistocene, the Conglomerate Unit was deposited through braided
stream fluvial system. After that a deformation caused the Conglomerate Unit to
fold. In the same epoch, volcanic activities occurred that caused intrusion of
andesite. The geological process such as erosion and sedimentation continue to
occur until now.
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