Geological Hazard Sensitive Area

Furthermore, based on interpretation from Figure 4.7, generally, there are three drainages pattern which shapes the land form, i.e. parallel-rectangular, trellis-rectangular and radial patterns. Thereby, parallel-rectangular Pr-Rct pattern in research area explains that area controlled by structure geology dominantly such normal fault and then forced by strike-slip fault on the next period of tectonic occurrence. Whereas trellis-rectangular Tr-Rct also controlled the research area by structure geology dominantly, but the first tectonic occurrence produced folded area.

4.6 Geological Hazard Sensitive Area

In connection with geological hazards sensitive area, integrating existing settlement area, alteration zone, slope steepness and geomorphological interpretation fault drainage pattern, finally, determination of sensitives area can be mapped. In general, sensitive area occupied by volcanic and sedimentary breccias, conglomerate, sandstone, limestone, claystone and alluvium, with slope controlled bigger than 15. In some place, it is also occupied by igneous rock with slope controlled bigger than 50. Whereas, most of clay-hydroxyl which occupied in study area Figure 4.2. Page: 42 indicated those area rich with mineral which produced caused by tectonic activity. Clay-hydroxyl itself formed by tectonic activity possibilities or geothermal processes that reacted with country rockhost rock that distributed by permeability fracture. Figure 4.8. 46 Figure 4.8. Sensitive Area over Rock Type Thereby, based on raster and spatial analysis and supported by geomorphological and geological interpretation, it can be clearly seen the risky settlement area occupied around areas which is classified as sensitive area Figure 4.9. 47 Figure 4.9. Geological Hazard Settlement Sensitive Area. Finally, after sensitive area and risky settlement overlaid over the administration map Figure 4.10, it can be clearly seen the distribution of risky settlement in several places in West Java and Banten Province Table 4.4.. Figure 4.10. Geological Hazard Risky Settlement 48 Karawang Sukabumi Ciengang Geger Bitung Hegarmulya, Cidadap Sagaranten Cibenda Ciemas Cimaherang Kabandungan Padabeunghar Jampang Tengah Bantargadung, Hegarmanah, Sirnajaya Warung Kiara Cibodas, Pelabuhanratu, Citarik Pelabuhan Ratu Sinaresmi, Caringin, Pasirbaru, Cikahuripan, Gunung Kramat, Gunung Tanjung, Cikelat, Cicadas., Cimaja, Karang Papak, Cisolok, Ridogalih, Margalaksana, CIleungsi Cisolok Cidahu, Hutan Cidahu Cipeteuy Kabandungan Sukabumi West Java Kopo, Citeko, Cibeureum, Tugu Utara Cisarua Gadog, Kuta Megamendung Babakan Raden, Cariu, Cibatu Tiga, Mekarwangi, Cikutamahi, Tanjung Rasa, Bantar Kuning, Buanajaya, Tanjung Sari, Cibadak Cariu Karang Tengah Babakan Madang Hambalang, Tajur Citeureup Pangradin, Jugala Jaya, Cileuksa Jasinga Ciaruten Ilir Cibungbulang Leuwiliang, Wangun Jaya Leuwiliang Pabuaran Kemang Karihil Parung Cipinang, Kampungsawah, Rabak, Leuwibatu Rumpin Argapura, Rengasjajar, Mekarjaya, Batujajar Cigudeg Sukaresmi, Sukadamai, Sukaharja, Pabuaran Sukamakmur Singasari, Bendungan, Balekambang, Sukajaya Jonggol Nambo, Kembang Kuning, Lulout, Leuwikaret Cileungsi Cikeas Udik, Wanaherang Gunung Putri Bogor West Java Cilograng, Cibareno Bayah Gunung Gede, Cihara, Situregen, Sukajadi, Hegarmanah, Sindangratu, Mekarjaya, Cimancak Panggarangan Ciparay, Ciusul, Citorek Cibeber Cirinten Bojongmanik Haurgajrug Cipanas Muncang Muncang Wantisari Leuwidamar Cimarga, Sangkan Manik Cimarga Sajiramekar Sajira Guradog Maja Lebak Banten Village District Sub-Province Province Table 4.4. Risky Settlement Area in West Java and Banten 49 Cupunagara Cisalak Ciater, Cibeusi Jalan Gagak Banggalamulya Cipendeuy Ponggang, Talagasari, Curugagung Sagalaherang Subang West Java Mekarjaya Cempaka Margaluyu, Mekarjaya, Taringgul Landeuh Wanayasa Kertasari Bojong Citamiang Maniis Parakanlima Purwakiarta Pesawahan Pesawahan Tegalega Ciampel Sukatani, Cibodas, Cianting Sukatani Kutamanah, Ciririp, Parungbanteng, Danau, Jatimekar, Kembangkuning, Tajursindang, Sindanglaya Jatiluhur Medalsari, Mekarbuana, Wargasetra, Cintalaksana, Cintawargi, Kutalanggeng, Kutamaneuh Pangkalan Karawang West Java Sukapura, Cibeureum, Tarumajaya, Cikembang, Cihawuk, Neglawangi Kertasari Mandalahaji, Nagrak, Cikawao, Pangauban, Cikitu, Girimulya Pacet Arjasari, Pinggirsari Arjasari Ciheulang, Gunungleutik Ciparay Bojongmalaka, Baleendah, Manggahang Baleendah Pananjung, Bandasari, Nagrak Banjaran Malasari, Sukamaju Cimaung Cibodas Pasirjambu Cintakarya, Sindangkerta Gununghalu Jambu, Cintaasih Cipongkor Sukajaya, Cikahuripan, Gudangkahuripan, Jayagiri, Suntenjaya Lembang Kertawangi, Jambudipa Cisarua Lagadar Margaasih Leuwigajah Cimahi Selatan Gadobangkong Ngamprah Cipatat, Citatah, Gunungmasigit, Cirawamekar Cipatat Puteran, Rende, Cikalong, Kangasari Cikalong Wetan Ciroyom, Sirnaalih, Sirnaraja, Nanggeleng, Margaluyu Cipendeuy Bandung West Java Sinarjaya, Cijayana Bungbulang Cimahi Cisewu Selaawi Talegong Garut West Java Ramasari, Cihea Bojong Picung Mekar Sari, Sukamulya, Mekar Mulya, Cigunungherang, Cirama Euwah Girang, Kamurnag Cikalong Kulon Sukaresmi Sukaresmi Ciloto, Cimacan, Sukatani, Cipendawa, Gadog, Cibodas Pacet Cianjur West Java Village District Sub-Province Province 50 Sukahurip Cijambe Tanggulun Timur, Jambelaer, Cisampih Kalijati Village District Sub-Province Province 51

V. CONCLUSIONS AND RECOMMENDATION