Chumairoh, Izza (2014) Identifikasi Litologi Dan Indikasi Patahan Pada Daerah Karangkates Malang Selatan Dengan Menggunakan Metode Geolistrik Konfigurasi Dipol-Dipol. Sarjana thesis, Universitas Brawijaya.
Abstract
Telah dilakukan identifikasi litologi dan indikasi patahan di daerah Karangkates Malang Selatan dengan menggunakan metode geolistrik konfigurasi dipol-dipol. Penelitian ini bertujuan menentukan nilai resistivitas batuan, litologi serta indikasi keberadaan patahan di daerah Karangkates. Pengambilan data dilakukan selama 2 hari pada 4 lintasan, yaitu lintasan A, B, C, dan D. Panjang lintasan A,C, dan D masing-masing sebesar 90 m dengan bentangan 5 m, sedangkan lintasan lintasan B memiliki panjang 150 m dengan bentangan 10 m. Pengolahan data dilakukan dengan menggunakan persamaan resistivitas semu, kemudian dilakukan inversi menggunakan software Res2dinv untuk mendapatkan nilai resistivitas sesungguhnya. Berdasarkan hasil pengolahan data, didapatkan nilai resistivitas sebesar 2 Ωm sampai 1347 Ωm. Litologi ditentukan dengan melakukan interpretasi, yaitu membandingkan tabel nilai resistivitas batuan dan peta geologi daerah penelitian. Hasil interpretasi menunjukkan bahwa daerah penelitian memiliki penyusun litologi yang sama, yaitu lempung berpasir, tuf dan lava. Terdapat indikasi patahan di sepanjang lintasan penelitian yang ditunjukkan dengan nilai resistivitas yang rendah.
English Abstract
Identification of lithology and fault had been done by using geoelectrical method of dipole-dipole configuration at Karangkates, South Malang. The goal is to determine the resistivity of the rock, lithology and the fault indication in Karangkates area. Data were collected for 2 days at 4 line, which are lines A, B, C, and D. Each of the lines A, C, and D has a path of 90 m long, with electrode spacing of 5 m, while the line B has a path length of 150 m, with electrode spacing of 10 m. Data processing was done by using apparent resistivity equation and inversion in order to determine the true resistivitiy using software Res2dinv. Base on the results of data processing, we obtained the resistivity value of 2 Ωm to 1347 Ωm. The lithology was determined through interpretation, by using a conversion table of resistivity of rocks and geological map of the studied area. The results show that the area has the same lithological constituents, which are clay sand, tuff and lava. There are indications of fault along the lines, indicated by low resistivity values.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2014/143/051402720 |
| Subjects: | 500 Natural sciences and mathematics > 530 Physics |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Hasbi |
| Date Deposited: | 13 May 2014 09:51 |
| Last Modified: | 25 Oct 2021 02:59 |
| URI: | http://repository.ub.ac.id/id/eprint/153759 |
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