STUDI FASIES TURBIDIT DAN KORELASI BIOSTRATIGRAFI FORMASI HALANG DAERAH PASINGGANGAN DAN SEKITARNYA, KABUPATEN BANYUMAS, JAWA TENGAH

MUBAROK, NAUFAL SAIFUL ISLAM and Sutriyono, Edy (2022) STUDI FASIES TURBIDIT DAN KORELASI BIOSTRATIGRAFI FORMASI HALANG DAERAH PASINGGANGAN DAN SEKITARNYA, KABUPATEN BANYUMAS, JAWA TENGAH. Undergraduate thesis, Sriwijaya University.

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Abstract

Penelitian dilakukan di Daerah Pasinggangan dan sekitarnya, Kabupaten Banyumas Provinsi Jawa Tengah dengan luasan 3x3 kilometer. Penelitian ini dilakukan dengan tujuan untuk menentukan fasies turbidit yang berkembang serta korelasi biostratigrafi Formasi Halang di Daerah Pasinggangan dan sekitarnya. Metode penelitian yang digunakan meliputi studi literatur terdahulu (Pra-Lapangan), survey lapangan, analisis laboratorium dan pengolahan data, hingga penyusunan laporan. Formasi Halang pada daerah penelitian tersebar seluas 32% yang membentang dari Tenggara hingga Barat Laut daerah penelitian. Bukti adanya arus turbidit ditelurusi melalui asosiasi struktur sedimen yang ditemukan di lapangan. Untuk itu, dilakukan analisis lebih dalam terhadap fasies Formasi Halang dengan melakukan measuring section pada 4 lintasan di 2 sungai, yaitu Sungai Pasinggangan dan Sungai Banyumas. Hasilnya, ditemukan pola suksesi pengendapan, yaitu finning upward (FU), coarseing upward (CU), dan finning upward (FU). Berdasarkan klasifikasi Bouma (1962), terdapat sikuen Ta, Tb, Tc,dan Td pada singkapan batuan yang ditemukan. Selain itu, sesuai klasifikasi Walker (1978) terdapat fasies Classical Turbidity (CT), Massive Sandstone (MS), Pebbly Sandstone (PS), dan Conglomerate (CGL). Hal tersebut menunjukkan lingkungan pengendapan Formasi Halang termasuk ke dalam Middle fan of Submarine fan system. Hasil analisis paleontologi dan korelasi biostratigrafi menunjukkan adanya 4 biozonasi. Untuk itu, ditentukan umur relatif Formasi Halang adalah N13-N19 atau Miosen Tengah hingga Pliosen Tengah dan terendapkan pada zona batimetri Batial Atas-Batial Bawah (1146-3826 m). The research was conducted in Pasinggangan Area and surrounding Banyumas Regency of Central Java Province with an area of 3x3 Kilometers. This study was conducted with the aim to determine the growing benefits of turbidite as well as the correlation of biostratigraphic Halang Formation in Pasinggangan and surrounding areas. Research methods used include previous literature studies (Pre-Field), field surveys, laboratory analysis and data processing, to the preparation of reports. Halang formation in the research area spread an area of 32% which stretches from southeast to northwest research area. Evidence of turbidite currents is traced through the association of sedimentary structures found on the ground. For this reason, a deeper analysis of the facies of the Halang Formation by measuring sections on 4 tracks in 2 rivers, namely the Pasinggangan River and the Banyumas River. The results found a pattern of deposition succession, namely finning upward (FU), coarseing upward (CU), and finning upward (FU). Based on the Bouma classification (1962), there are elbows Ta, Tb, Tc, and Td found on the outcrop. In addition, according to walker classification (1978) there are facies Classical Turbidity (CT), Massive Sandstone (MS), Pebbly Sandstone (PS), and Conglomerate (CGL). This shows the environment of deposition of the Halang Formation is including in the Middle fan of Submarine fan system. The results of paleontology analysis and biostratigraphic correlation showed the existence of 4 biozonations. For this reason, the relative age of the Halang Formation is N13-N19 or Middle Miocene to Middle Pliocene and is deposited in the Lower-Upper Batial Bathymetry zone (1146-3826m).

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Pasinggangan, Measuring Section, Turbidit, Biostratigrafi
Subjects:	Q Science > QE Geology > QE1-996.5 Geology Q Science > QE Geology > QE640-699 Stratigraphy Q Science > QE Geology > QE701-760 Paleontology
Divisions:	03-Faculty of Engineering > 34201-Geological Engineering (S1)
Depositing User:	Naufal Saiful Islam Mubarok
Date Deposited:	03 Jun 2022 08:42
Last Modified:	03 Jun 2022 08:42
URI:	http://repository.unsri.ac.id/id/eprint/71541

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