Septadi, Bimakurnia (2017) Pemetaan Zona Bijih Emas Epitermal Sulfidasi Rendah Prospek "BIKU" Desa Hulawa Kabupaten Pohuwato Provinsi Gorontalo Menggunakan Metode Geolistrik Resistivitas 2D Dan Polarisasi Induksi Konfigurasi Dipole-Dipole. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Prospek Biku merupakan salah satu wilayah di Gorontalo yang memiliki potensi mineral emas. Pemetaan geofisika menggunakan metode geolistrik resistivitas dan polarisasi terinduksi digunakan untuk mengetahui persebaran litologi yang ada dibawah permukaan. Hasil pemetaan dipermukaan menunjukkan Batuan breksi hidrotermal dan intrusif riodasit dengan alterasi silika klorit-silika argilik mengandung mineralisasi emas yang tinggi.. Resistivitas digunakan untuk mengetahui persebaran litologi sementara polarisasi terinduksi untuk melihat alterasi yang menyertainya. Berdasarkan hasil pengolahan data, litologi breksi hidrotermal memiliki nilai resistivitas antara >150 – 250 Ωm dengan nilai chargeability antara 4-8 ms yang teralterasi silika argilik. Litologi intrusif riodasit degan rentang nilai > 350 Ωm dan sering ditemukan kontak langsung dengan breksi hidrotermal dengan alterasi silika – silika klorit maupun silika argilik dengan nilai chargeability hingga 12 ms berasosiasi dengan patahan.
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The Biku’s Prospect is one of the areas in Gorontalo where has potential gold mineral. The geological surface mapping show that lithology of the hydrothermal breccia and intrusive riodacite with silicic chlorite-silicic argilic alteration contain high gold mineralization. Geophysical mapping using geo-electrical resistivity and induced polarization methods was used to determine the spread of existing lithologies below the surface. Resistivity is used to determine the spread of lithology while polarization is induced to see the accompanying alterations. Based on the results of data processing, hydrothermal breccia has resistivity value between ≤ 150 - 250 Ωm with chargeability value between 4-8 ms which is generally silica-argilic alteration. Intrusive riodacit with a range of values ≥ 350 Ωm and frequent direct contact with hydrothermal breccias with silica-silica chlorite and silica-argilic alteration with a chargeability value of up to 12 ms assosiated with breccia fault.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSGf 551.1 Sep p-1 3100018075024 |
| Uncontrolled Keywords: | Mineral emas; resistivitas; polarisasi terinduksi; breksi hidrotermal; intrusif rodasit; Gold mineralization; resistivity; induced polarization; hydrotermal breccia, intrusive rodacit. |
| Subjects: | G Geography. Anthropology. Recreation > GB Physical geography G Geography. Anthropology. Recreation > GE Environmental Sciences |
| Divisions: | Faculty of Civil Engineering and Planning > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
| Depositing User: | Bimakurnia Septadi |
| Date Deposited: | 25 Jan 2018 08:55 |
| Last Modified: | 24 Sep 2020 05:36 |
| URI: | http://repository.its.ac.id/id/eprint/50700 |
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