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GEOLOGI DAERAH GUNUNG BINTANG AWAI, KABUPATEN BARITO SELATAN, KALIMANTAN TENGAH DAN STUDI LINGKUNGAN PENGENDAPAN BATUBARA BERDASARKAN KOMPOSISI MASERAL

Undergraduate Theses from JBPTITBPP / 2018-04-16 14:13:31
Oleh : AKBAR PRIMA JAYA (NIM : 12011073), S1 - Geological Engineering-FITB
Dibuat : 2016, dengan 9 file

Keyword : Lingkungan Pengendapan, Batubara, Maseral, Potensi, Gunung Bintang Awai

Daerah penelitian terletak di Kecamatan Gunung Bintang Awai, Kabupaten Barito Selatan, Provinsi Kalimantan Tengah dan secara geografis terletak pada

290362.68-299682.57mE dan 9830609.16-9839684.97mN (WGS84) zona 50S. Daerah penelitian memiliki luas 68 km2. Geomorfologi daerah penelitian terbagi dalam dua satuan geomorfologi, yaitu Satuan Perbukitan Homoklin dan Satuan Dataran Aluvial. Geomorfologi daerah penelitian berada pada tahapan geomorfik dewasa. Stratigrafi daerah penelitian dibagi menjadi empat satuan batuan tidak

resmi, yaitu, Satuan Batugamping, Satuan Batupasir,Satuan Batupasir-Batulempung dan Satuan Endapan Aluvial. Satuan Batugamping diendapkan pada lingkungan inner neritic saat oligosen akhir. Pada Miosen Awal terendapkan Satuan Batupasir pada lingkungan upper delta plain di atas Satuan Batugamping (Formasi Montalat).Kemudian diendapkan satuaan Batupasir-Batulempung secara selaras diatas Satuan Batupasir saat Miosen Tengah pada lingkungan fluvial-upper

delta plain (Formasi Warukin). Struktur geologi berupa lipatan antiklin yang terbentuk akibat rezim kompresi bearah tenggara- baratlaut pada Plio-Pleistosen. Lapisan Batubara berada pada satuan batupasir dan satuan batupasirbatulempung. Kualitas batubara pada satuan batupasir memiliki rank Subbituminus A-High Volatile Bituminous C dan batubara satuan batupasirbatulempung

memiliki rank Lignite A-Subbituminous C. Komposisi maseral

utama penyusun batubara berupa Vitrinit. Dengan perbandingan nilai GI dan TPI menunjukkan fasies pengendapan zona Telmatic pada Wet Forest Swamp. Potensi

Sumberdaya Batubara Terukur 18.788.190 ton, Tertunjuk : 75.152.760 ton, dan terkira 169.093.731 ton.

Deskripsi Alternatif :

Research area is located in Gunung Bintang Awai District, South Barito Regency, Central Kalimantan Province and geographically located at UTM

coordinates 290362.68-299682.57mE and 9830609.16-9839684.97mN (WGS84) 50S zone. The research area is 68 km2. Geomorphology of research area is divided into three geomorphological units. Those units are Karst Hills Unit, Homoklin Hills Unit, and Alluvial Plain

Unit. Geomorpholgy of research area is in mature geomorphic stage. Stratigraphy of research area is divided into four lithological unit, namely Limestone unit,

Sandstone Unit, sandstone-claystone Unit, and Alluvial Deposit. Limestone Unit was deposited in inner neritic environment during Late Oligocen. Then Early Miocen Sandstone Unit was deposited Upper Delta Plain environment (Warukin Formation). Sandstone-claystone Unit was deposited after Sandstone Unit during Middle Miocene in fluvial-Upper Delta plain. Fold in the research area are the product of compressional deformation regime northwest-southeast and formed in Plio-Pleistocene epoch. Coal seams are located on sandstone units and Sandstone-Claystone units .Quality of sandstone unit's coals have ranks Subbituminous A-High Volatile Bituminous C and Sandstone-Claystone units have ranks Lignite ASubbituminous C. Primary maceral composition is Vitrinite. Comparation

between GI and TPI value show that Coal depositional Facies within Wet Forest Swamp. Coal potential measurable resources is 18.788.190 tons, Indicated resources is 75.152.760 tons, and inferred resources is 169.093.731 tons.


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