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All Journal Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
Indra Nurdiana
Pusat Survei Geologi
Chemistry Earth & Planetary Sciences Energy

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STRATIGRAFI DAN SEDIMENTOLOGI ENDAPAN DATARAN PASANG-SURUT DI KALI TULIS, BANJARNEGARA Syaiful Bachri; Edi Slameto; Indra Nurdiana
Jurnal Geologi dan Sumberdaya Mineral Vol. 20 No. 3 (2010): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v20i3.170

Abstract

The tidal flat deposits of the Merawu Formation in Kali Tulis belongs to the Merawu Formation, and can be divided into two members, i.e. the lower part or the mudstone member, and the upper part or the sandstone member, with gradational contact between the two members. The lower parts is dominated by mudstone which is mostly deposited in mud flat environment, while the upper part is dominated by sandstone which is dominantly deposited in sand flat environment. Some sandstone layers in the lower part contains foraminifers of Early – Middle Miocene age, whereas the occurrence of fossils in the upper part has not been known so far. Sedimentary structures found in the two members include herring-bone structure, small scaled slump, parallel and cross laminations, bioturbation, flute cast, bed load, and fining upwards grain size. The sandstone of the two members contains volcanic rock fragments abundantly, suggesting that the provenance is volcanic rock in volcanic arc.Keywords: sand flat, mud flat, herring bone structure, Merawu Formation
Karakteristik Geokimia Organik dan Indeks Kegetasan Serpih Berumur Eosen-Oligosen di Sub Cekungan Jambi, Cekungan Sumatera Selatan Moh. Heri Hermiyanto Zajuli; Indra Nurdiana; Taufik Ramli
Jurnal Geologi dan Sumberdaya Mineral Vol. 24 No. 1 (2023): JURNAL GEOLOGI DAN SUMBERDAYA MINERAL
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v24i1.725

Abstract

Daerah penyelidikan terletak di Sub Cekungan Jambi, Cekungan Sumatra Selatan. Secara administrasi termasuk Kabupaten Tebo dan Sarolangun. Studi ini difokuskan pada karakteristik geokimia organik dan indeks kegetasan (BI) dari serpih Formasi yang berumur Eosen-Oligosen. Metodologi yang digunakan adalah hasil analisis laboratorium TOC, XRD dan petrofisika dari data log dan seismik. Berdasarkan data tersebut maka serpih yang terdapat di daerah penyelidikan mempunyai kecenderungan berpotensi sebagai sumberdaya migas nonkonvensional dengan kategori bagus. Dari hasil perhitungan volume sweetspot serpih ini diketahui volume SS_01 adalah 1.17 x 1012 ft2 dengan luas area 8.9 x 108 ft2 dan volume SS_02 adalah 5.01 x 1011 ft2 dengan luas area 4.21 x 108 ft2 .Kata kunci : Geokimia Organik, TOC, Indeks Kegetasan, Cekungan Sumatra Selatan, Eosen-Oligosen.
Co-Authors Edi Slameto Moh. Heri Hermiyanto Zajuli Syaiful Bachri Taufik Ramli