Utama, Hari Wiki and Kurniantoro, Eko and Said, Yulia Morsa and Mulyasari, Rahmi (2018) Genetic of joint system Mengkarang metapellite: implication to characteristic deformation on the Muara Karing Geopark Merangin, Jambi. Prosiding Semnas SINTA FT UNILA Vol. 1 Tahun 2018. pp. 168-172. ISSN 2655-2914

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Abstract

Present day tectonics of the Sumatera are characterized by strike slip fault regime which fault segmented, specially Siulak segment to associated of structure orientation on the Muara Karing surrounding. Muara Karing is one of drainage pattern which river system downstream to Batang Merangin on the Geopark Merangin. Mengkarang Formation is the oldest formation which compiler of geology Sarolangun-Bangko, attain the Permian. Typical location which lithology metasediment on the bed rock stream. The existence of joint system on the bed rock have been indicated tectonic deformation, then needful of good knowledge of joint system, which is identified process such as measured object and stage of valid analysis could be geological hystory on the Muara Karing. Measured joint structure was the statistical methods have been applied to metapellite Mengkarang outcrop on the bed rock stream Muara Karing and then combine to structural orientation on geological map. Measured on object joint structure were comprise of determining orientation, measured of strike/dip joint plane such as shear joint and extention joint, dimension, and quantity of joint. The result measured on 150 joint datas sistematic on metapellite (ductile deformation) Mengkarang Formation, identified as shear joint 100 set and extention joint 50 set, then to obtain generally 3 sets joint orientation, which are north northeastern-south southwestern, east northeatern-west westsouthern (shear joint) and northeastern-southwestern (extention joint). Cross cutting relathionship have been indicated of extention joint older then shear joint. Analyzed to statistical joint datas have been obtain tectonic deformation on shear joint effect of regime compressional N 223OE, whereas extention joint were effect of regime compressional N 44OE. Based on analyzed joint on metapellite Mengkarang Muara Karing extend of implication tectonic deformation Mengkarang Formation. Furthermore tectonic deformation on Mengkarang which compressional regime northeastern-southwestern to interpreted have been effect of active tectonic Oligo-Miocene, similarly tectonic regime deformation Sumatera Island as rotational stress to applied of simple shear.

Item Type: Article
Subjects: Q Science > QE Geology
Divisions: Fakultas Teknik (FT) > Prodi Teknik Geofisika
Depositing User: Rahmi Mulyasari
Date Deposited: 06 May 2019 04:42
Last Modified: 06 May 2019 04:42
URI: http://repository.lppm.unila.ac.id/id/eprint/11575

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