SERPIH SILAT DAERAH NANGASERAWAI, KABUPATEN SINTANG, PROVINSI KALIMANTAN BARAT DAN POTENSINYA SEBAGAI SERPIH GAS

Authors

  • Robert Lumban Tobing Pusat Sumber Daya Geologi Author

DOI:

https://doi.org/10.47599/bsdg.v8i1.74

Keywords:

geokimia organik, kematangan, kerogen, lemak tanaman, maseral, organik, petrografi, serpih gas

Abstract

Serpih Silat termasuk di dalam Cekungan Melawi yang terendapkan pada lingkungan lakustrin dan delta.
Satuan ini tersusun oleh batuan serpih berwarna abu-abu kehitaman-kecoklatan, struktur laminasi,
menyerpih, keras dan getas. Setempat-setempat terdapat sisipan batupasir halus berwarna kelabu
kekuningan.
Hasil analisis geokimia organik dan maseral pada conto serpih terindikasi mengandung material organik
dengan kategori sedang-baik. Material organik tersebut terdiri dari maseral vitrinit dan liptinit. Maseral
vitrinit berasal dari tumbuhan tinggi, dan maseral liptinit berasal dari lemak tanaman atau alga laut.
Berdasarkan hasil analisis TOC, kandungan organik pada serpih tersebut berkisar 0,54 -1,15%, yang
merupakan kerogen tipe III dan campuran antara kerogen tipe 11/111. Kerogen tipe III memiliki
kecenderungan untuk menghasilkan gas, sedangkan campuran kerogen tipe IIIIII memiliki
kecenderungan menghasilkan gas dan minyak.

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Published

2013-05-08

Issue

Vol. 8 No. 1 (2013): Buletin Sumber Daya Geologi

Section

Buletin Sumber Daya Geologi

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