Path: TopS1-Final ProjectGeological Engineering-FITB2016

GEOLOGI DAN HIDROGEOLOGI DAERAH PARIGI, KABUPATEN PANGANDARAN, JAWA BARAT

Undergraduate Theses from JBPTITBPP / 2017-11-14 15:14:54
Oleh : IRVAN FEBYANTO (NIM: 12011024), S1 - Department of Geology
Dibuat : 2016, dengan 9 file

Keyword : airtanah, akuifer, karbonat, karst, Parigi

Daerah penelitian berada di Kecamatan Parigi, Kabupaten Pangandaran, Provinsi Jawa Barat dan secara geografis terletak pada koordinat UTM 223000-229000 mT dan 9162500-9153500 mS (zona 49S). Daerah penelitian memiliki luas 54 km2. Geomorfologi daerah penelitian terbagi dalam tiga satuan geomorfologi, yaitu Satuan Punggungan Homoklin Karangmulya, Satuan Perbukitan Kuesta Bangunkarya, dan Satuan Perbukitan Karst Selasari. Geomorfologi daerah

penelitian berada pada tahapan geomorfik dewasa. Stratigrafi daerah penelitian dibagi menjadi empat satuan batuan, yaitu Satuan Breksi, Satuan Batupasir, Satuan Batugamping, dan Satuan Endapan Aluvial. Satuan Breksi diendapkan pada lingkungan kipas bawah laut bagian atas

saat Miosen Awal. Satuan Batupasir diendapkan secara selaras di atas Satuan Breksi saat Miosen Tengah pada lingkungan neritik tengah-neritik luar. Satuan

Batugamping diendapkan secara menjemari dengan Satuan Batupasir saat Miosen Tengah pada lingkungan neritik dalam-neritik tengah. Satuan Endapan Aluvial masih terendapkan hingga sekarang. Struktur lipatan dan sesar pada daerah

penelitian merupakan produk deformasi rezim kompresional berarah utara-selatan yang terbentuk pada Plio-Pleistosen. Hasil observasi hidrogeologi menunjukkan akuifer daerah penelitian memiliki sistem akuifer batuan sedimen dengan jenis akuifer bebas. Akuifer di daerah penelitian mencakup hasil lapukan pada Satuan Breksi, Satuan Batupasir, dan Satuan Batugamping. Jenis airtanahnya segar (TDS 46,4 - 434 mg/L) dengan arah aliran dominan barat daya, selatan, dan tenggara. Pelarutan mineral karbonat membuat nilai TDS dan pH lebih tinggi di selatan daripada di utara daerah penelitian. Berdasarkan analisis nilai pH dan TDS, dan mengacu pada Permenkes RI No.492/MENKES/PER/IV/2010, airtanah yang layak untuk dikonsumsi berada pada bagian utara daerah penelitian.

Deskripsi Alternatif :

Research area is located in Parigi District, Pangandaran Regency, West Java Province and geographically located at UTM coordinates of 223000-229000 mE and 9162500-9153500 mS (49S zone). The research area is 54 km2. Geomorphology of research area is divided into three geomorphological

units. Those units are Karangmulya Homocline Ridges Unit, Bangunkarya Cuesta Hills Unit, and Selasari Karst Hills Unit. Geomorpholgy of research area is in mature geomorphic stage. Stratigraphy of research area is divided into four lithological units, namely Breccia Unit, Sandstone Unit, Limestone Unit, and Alluvial Deposit Unit. Breccia Unit was deposited in upper submarine fan environment during Early Miocene. Sandstone Unit was deposited conformably above Breccia Unit during Middle

Miocene in middle-outer neritic environment. Limestone Unit was deposited interfingering with Sandstone Unit during Middle Miocene in inner-middle neritic environment. Alluvial Deposit Unit is still being deposited until now. Fold and faults in the research area are the product of compressional deformation regime, trending north-south, formed in Plio-Pleistocene epoch. Hydrogeological observation result shows that the aquifer in the research area is a sedimentary rock aquifer system with unconfined aquifer type. Aquifers in the research area are the weathering result of Breccia Unit, Sandstone Unit, and Limestone Unit. Its groundwater type is fresh (TDS 46,4-434 mg/L) with the dominat flows towards southwest, south, and southeast. Carbonate mineral dissolution results in higher TDS and pH value in the southern than in the northern parts. Based on pH and TDS value analysis, and referring to Permenkes RI No.492/MENKES/PER/IV/2010, the consumable groundwater is in the northern part.

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PropertiNilai Properti
ID PublisherJBPTITBPP
OrganisasiS1 - Department of Geology
Nama KontakUPT Perpustakaan ITB
AlamatJl. Ganesha 10
KotaBandung
DaerahJawa Barat
NegaraIndonesia
Telepon62-22-2509118, 2500089
Fax62-22-2500089
E-mail Administratordigilib@lib.itb.ac.id
E-mail CKOinfo@lib.itb.ac.id

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  • Pembimbing : Prof. Ir. Lambok M. Hutasoit, M.Sc., Ph.D,, Editor: Alice Diniarti

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