Nazibullah, Muh. Maulana (2024) Estimasi Sumberdaya Pertambangan Andesit Menggunakan Metode Geolistrik 2D Dengan Korelasi Pemboran Lokasi Desa Bulukandang, Kecamatan Lumbang, Kabupaten Pasuruan, Provinsi Jawa Timur. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tambang batuan atau galian C spesifiknya andesit berpotensi dapat ditemukan di daerah kecamatan Lumbang, kabupaten Pasuruan dikarenakan berdasarkan peta geologi regional lembar malang, lokasi penelitian termasuk kedalam formasi Batuan Gunung Api Tengger Tua yang didalamnya terdapat Breksi gunungapi, lava, tuff, aglomerat, dan lahar. Dalam penelitian ini dilakukan analisis persebaran dan perhitungan estimasi volume sumber daya dari data hasil pengukuran geolistrik 2D konfigurasi Wenner-Schlumberger sebanyak 10 lintasan dengan korelasi hasil 7 titik pemboran di daerah Kecamatan Lumbang, Pasuruan. Metode geolistrik 2D dapat menghasilkan penampang 2D bawah permukaan dan dari hasil pemboran dapat dilakukan analisis litologi serta dikorelasi. Analisis persebaran dan perhitungan volume pada penelitian ini dilakukan dengan metode invers distance weighting (IDW) yang menghasilkan pemodelan ketebalan lapisan 3D. Hasil penelitian ini menunjukkan bahwa terdapat dua lapisan litologi batuan berdasarkan hasil korelasi dan nilai resistivitasnya. Lapisan pertama breksi lahar dengan rentang nilai resistivitas 10-200 Ohm dan lava andesit dengan rentang nilai resistivitas 200-2000 Ohm m. Hasil Pemodelan 3D didapatkan bahwa Persebaran dari kedua lapisan litologi tersebut merata di seluruh lokasi penelitian serta memiliki ketebalan lapisan breksi lahar antara 10-30 meter dan lava andesit antara 20-40 meter. Dari perhitungan pemodelan 3D ketebalan lapisan didapatkan hasil volume breksi lahar sebesar 3.812.487 m3 dan lava andesit sebesar 6.014.587 m3. Diharapkan dari hasil penelitian ini didapatkan hasil yang representatif dan akurat berdasarkan data hasil eksplorasi dalam melakukan perhitungan estimasi volume sumber daya pertambangan di lokasi penelitian
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Mining Rock mining or excavation C specifically andesite has the potential to be found in the Lumbang sub-district area, Pasuruan Regency because based on the regional geological map of the Malang, the research location is included in the Old Tengger Volcano Rock formation which includes volcanic breccia, lava, tuff, agglomerate, and lava. In this study, the distribution analysis and calculation of resource volume estimation from 2D geoelectric measurement data of Wenner-Schlumberger configuration as many as 10 passes with correlation results of 7 drilling points in Lumbang District, Pasuruan. The 2D geoelectric method can produce a 2D cross-section of the subsurface and from the results of the drilling can be done lithological analysis and correlated. The distribution analysis and volume calculation in this study were carried out with the inverse distance weighting (IDW) method which resulted in 3D layer thickness modeling. The results of this research show that there are two layers of rock lithology based on the correlation results and resistivity values. The first layer is lava breccia with a resistivity value range of 10-200 Ohm and andesite lava with a resistivity value range of 200-2000 Ohm m. The results of 3D modeling found that the distribution of the two lithological layers is evenly distributed throughout the study site and has a thickness of lava breccia layer between 10-30 meters and andesite lava between 20-40 meters. From the calculation of 3D modeling of layer thickness, the volume of lahar breccia is 3,812,487 m3 and andesite lava is 6,014,587 m3. It is expected that the results of this study will obtain representative and accurate results based on exploration data in calculating the estimated volume of mining resources at the research site.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | geolistrik 2D, IDW, estimasi, 2D geoelectric, estimation, Pasuruan |
| Subjects: | Q Science > QE Geology > QE601 Geology, Structural |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
| Depositing User: | Nazibullah Muh. Maulana |
| Date Deposited: | 12 Aug 2024 01:13 |
| Last Modified: | 28 Aug 2024 03:39 |
| URI: | http://repository.its.ac.id/id/eprint/112960 |
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