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Syaiful Bachri
Pusat Survei Geologi
Chemistry Earth & Planetary Sciences Energy

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KANDUNGAN MATERIAL ORGANIK DAN SIFAT GEOKIMIA BATULEMPUNG PALEOGEN DAN NEOGEN DI CEKUNGAN SERAYU: Suatu Analisis Potensi Batuan Induk Hidrokarbon Edi Slameto; Hermes Panggabean; Syaiful Bachri
Jurnal Geologi dan Sumberdaya Mineral Vol. 20 No. 4 (2010): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v20i4.172

Abstract

Geochemistry analysis (Rock-Eval pyrolisis, GC and GC-MS) on 2 (two) samples of Paleogene claystone, 3 (three) samples Neogene claystone, and 1 (one) oil seepage sample in Serayu Basin. The result of analysis shows that TOC of the Neogene claystone is higher than the Paleogene claystone. One sample of the Neogene claystone is able to be classified as source rock for oil and gas, whilst the others including the Paleogene claystone show as gas source rock. The geochemistry composition of Neogene claystone at Gintung River indicates that the oil seepage can be correlated with the rocks. The kerogen type of all claystone in the area ranges from Type III (terrestrial) to Type II (mixing terrestrial and marine).Keywords: hydrocarbon source rock, Rock-Eval pyrolisis, gas chromatography, gas chromatography-mass spectrometry, Serayu Basin
PENGARUH KEGIATAN TEKTONIK DAN GUNUNG API TERHADAP KARAKTERISTIK SEDIMENTOLOGI SEDIMEN NEOGEN AWAL DAERAH BAGIAN TENGAH CEKUNGAN SERAYU Syaiful Bachri
Jurnal Geologi dan Sumberdaya Mineral Vol. 20 No. 4 (2010): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v20i4.173

Abstract

The Early Neogene sediments in the central part of the Serayu Basin have different sedimentological characteristics of one unit from the others. They comprise the mean value of four variables, i.e. (1) sand/shale ratio, (2) bed frequency, (3) smectite / kaolinite ratio or Sm/(Sm+Ko), and (4) quartz/feldspar ratio or K/(K+F). The difference of the mean value of those four variables represents implication of different intensities of tectonic and volcanism activities. The variable values suggest that there was increasing tectonic activity followed by increasing volcanic activity from older rock unit to younger unit.Keywords: sedimentological characteristics, tectonic activity, volcanic activity, Serayu Basin
FORMASI MAUBISSE DAN AILEU DI BAGIAN BARAT TIMOR LESTE DALAM KERANGKA TEKTONOSTRATIGRAFI PULAU TIMOR Syaiful Bachri
Jurnal Geologi dan Sumberdaya Mineral Vol. 18 No. 5 (2008): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v18i5.254

Abstract

The stratigraphic position of the Maubisse and Aileu Formations in Timor remains controversial despite the latest studies, which tend to place them within the para-autochthonous sequence. Field evidence indicates that the two formations have  transitional relationships with the overlying para-autochthonous Wailuli Formation. Paleontological evidence also indicates that the Maubisse Formation was derived from the Australian continent, and the stratigraphically related Aileu Formation was located on the northwest flank of Australia until the Neogene arc- continent collision event. Keywords: Maubisse Formation, Aileu Formation,Wailuli Formation, tectonostratigraphy, para-autochthonous sequence. 
Co-Authors Asep Kurnia Permana Edi Slameto Hadi Nugroho Hermes Panggabean Indra Nurdiana