GEOLOGI DAN POLA SEBARAN SERTA KEMENERUSAN SEAM A1 DAN A2 FORMASI MUARA ENIM KECAMATAN LAWANG KIDUL, KABUPATEN MUARA ENIM, PROVINSI SUMATERA SELATAN

Pratama, Aditya Salfa Nur Rahman (2023) GEOLOGI DAN POLA SEBARAN SERTA KEMENERUSAN SEAM A1 DAN A2 FORMASI MUARA ENIM KECAMATAN LAWANG KIDUL, KABUPATEN MUARA ENIM, PROVINSI SUMATERA SELATAN. Other thesis, UPN "Veteran" Yogyajarta.

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Abstract

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GEOLOGI DAN POLA SEBARAN SERTA KEMENERUSAN SEAM A1
DAN A2 FORMASI MUARA ENIM, KECAMATAN LAWANG KIDUL,
KABUPATEN MUARA ENIM, PROVINSI SUMATERA SELATAN
SARI
Daerah penelitian secara administratif termasuk kedalam Kecamatan Lawang
Kidul, Kabupaten Muara Enim, Provinsi Sumatera Selatan. Lokasi penelitian dapat
ditempuh sekitar 4 jam dari Kota Palembang.
Penelitian ini bertujuan untuk mengetahui kondisi geologi daerah penelitian dan
pola sebaran serta kemenerusan seam A1 dan A2. Metode yang digunakan dalam
penelitian ini dilakukan dengan pengamatan kualitatif dan kuantitiatif. Pengamatan
kualitatif dilakukan dengan melakukan pemetaan geologi permukaan, pengambilan
sampel dan data, serta analisis data. Sedangkan pengamatan kuantitatif yaitu
dengan melakukan korelasi data bor dan penarikan kontur pola sebaran dan
kemenerusan lapisan batubara.
Geomorfologi di daerah penelitian, berdasarkan aspek-aspek utama geomorfologi
(morfologi, morfogenesa, dan morfoasosiasi), maka dapat dibagi menjadi empat
satuan bentuklahan, yaitu lahan hasil penggalian tambang, lahan hasil timbunan
tambang, danau tambang (sump), dan perbukitan lipatan menunjam.
Stratigrafi daerah penelitian termasuk dalam Formasi Muaraenim yang terdiri dari
dua satuan batuan, dari tua ke muda: satuan batulempung Muaraenim, dan satuan
batupasir-tufan Muaraenim.
Struktur geologi daerah penelitian terdiri dari antiklin menunjam dengan sumbu
relatif barat-timur, sesar turun, dan cleat pada lapisan batubara dengan arah tegasan
utama utara-selatan.
Sebaran lapisan batubara A1 dan A2 memiliki pola melengkung yang tidak
teratur serta menyempit semakin kearah selatan dan tenggara disebabkan adanya
sesar turun dibagian timur lokasi penelitian. Kemenerusan lapisan batubara A1
menerus melengkung mengikuti lengkungan tunjaman lipatan yang ada pada lokasi
penelitian dengan orientasi sumbu lipatan relatif barat-timur dan menunjam ke arah
barat. Kemenerusan lapisan batubara A1 dan A2 searah jurus perlapisan memiliki
kemenerusan yang tidak teratur. Sedangkan kemenerusan searah kemiringan
lapisan batubara juga terpotong oleh adanya sesar turun yang di interpretasikan
berdasarkan data bor memotong lapisan batubara A1 dan A2. Lapisan batubara di
lokasi penelitian termasuk kedalam bentuk lapisan batubara yang terlipatkan dan
tersesarkan.
Kata kunci : batubara, Fm. Muaraenim, geologi, kemenerusan, pola sebaran
vi
GEOLOGI DAN POLA SEBARAN SERTA KEMENERUSAN SEAM A1
DAN A2 FORMASI MUARA ENIM, KECAMATAN LAWANG KIDUL,
KABUPATEN MUARA ENIM, PROVINSI SUMATERA SELATAN
ABSTRACT
The research area is administratively included in Lawang Kidul Sub-district,
Muara Enim Regency, South Sumatra Province. The research location can be
reached about 4 hours from Palembang City.
This study aims to determine the geological conditions of the study area and the
distribution pattern and continuity of seam A1 and A2. The methods used in this
research were qualitative and quantitative observations. Qualitative observations
were made by conducting surface geological mapping, sampling and data, and data
analysis. While quantitative observations are by correlating drill data and drawing
contours of the distribution pattern and continuity of coal seams.
Geomorphology in the study area, based on the main aspects of geomorphology
(morphology, morphogenesis, and morphoassociation), can be divided into four
landform units, namely mine excavation land, mine dump land, mine lake (sump),
and subdued fold hills.
The stratigraphy of the study area belongs to the Muaraenim Formation which
consists of two rock units, from old to young: Muaraenim mudstone unit, and
Muaraenim tuffaceous-sandstone unit.
The geological structure of the study area consists of a dipping anticline with a
relative west-east axis, dipping faults, and cleats in the coal seam with a north-
south main strike direction.
The distribution of A1 and A2 coal seams has an irregular curved pattern and
narrows increasingly towards the south and southeast due to the presence of a
normal fault in the eastern part of the study site. The continuity of the A1 coal seam
is continuously curved following the bend of the existing folds at the study site with
a relative west-east orientation of the fold axis and dipping to the west. The
alignment of A1 and A2 coal seams in the direction of the strike of the seam has an
irregular alignment. While the alignment in the direction of the coal seam slope is
also cut by a normal fault that is interpreted based on drill data to cut the A1 and
A2 coal seams. The coal seams at the research site are included in the form of folded
and faulted coal seams.
Keywords: coal, Muaraenim formation, geology, continuity, distribution pattern

Item Type:	Thesis (Other)
Uncontrolled Keywords:	coal, Muaraenim formation, geology, continuity, distribution pattern
Subjects:	Q Science > QE Geology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Geography
Depositing User:	Eko Yuli
Date Deposited:	05 Oct 2023 02:29
Last Modified:	05 Oct 2023 02:29
URI:	http://eprints.upnyk.ac.id/id/eprint/37830

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