Cahyani, Nadilla Nuzulul (2024) Identifikasi Zona Mineralisasi Emas Epitermal Sulfida Rendah Pada Lapangan 'DL' Menggunakan Metode Resistivitas dan Induksi Polarisasi. Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 5017201060-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
5017201060-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 October 2026. Download (5MB) | Request a copy |
Abstract
Banyaknya kebutuhan emas dan banyaknya produksi barang tambang emas, menyebabkan semakin menipisnya barang tambang emas di Indonesia. Maka, diperlukan eksplorasi lanjut untuk mengetahui prospek barang tambang emas pada suatu lokasi tertentu, salah satunya menggunakan eksplorasi geofisika. Pada penelitian ini, bertujuan untuk mengidentifikasi zona cebakan mineralisasi emas bawah permukaan di lapangan 'DL' menggunakan metode resistivitas dan induksi polarisasi time domain dengan mendapatkan respon berupa nilai resistivitas dan chargeability di titik pengukuran. Pengolahan data resistivitas dan induksi polarisasi menggunakan inversi least – square. Berdasarkan hasil pengolahan data, ditemukan persebaran nilai resistivitas dan nilai chargeability yang dapat dibedakan menjadi tiga yaitu rendah, sedang, dan tinggi. Persebaran nilai resistivitas rendah dengan range untuk nilai resistivitas adalah 16– 36 Ω.m, untuk range nilai chargeability adalah 2 – 3 msec. Persebaran nilai resistivitas sedang dengan range nilai resistivitas adalah 37 - 71 Ω.m, sedangkan range nilai chargeability adalah 4 – 5 msec. Pada persebaran nilai resistivitas tinggi dengan range nilai resistivitas adalah 72 – 146 Ω.m, sedangkan range nilai chargeability adalah 6 – 10 msec. Ditemukan adanya zona persebaran zona mineralisasi emas, serta ditemukan alterasi hidrotermal berupa alterasi argilik dan silisifikasi. Ditemukan pula arah persebaran zona mineralisasi emas yang berarah barat daya – timur laut.
========================================================================================================================
The large demand for gold and the large production of gold mining goods, causing the depletion of gold mining goods in Indonesia. So, further exploration is needed to find out the prospects of gold mining goods at a certain location, one of which uses geophysical exploration. This study aims to identify the subsurface gold mineralization zone in the 'DL' field using resistivity and induced polarization time domain methods by obtaining responses in the form of resistivity and chargeability values at the measurement point. Resistivity and induced polarization data processing using least-square inversion. Based on the results of data processing, the distribution of resistivity values and chargeability values can be divided into three, namely low, medium, and high. The distribution of low resistivity values with a range for resistivity values is 16-36 Ω.m, for the chargeability value range is 2-3 msec. The distribution of medium resistivity values with a resistivity value range is 37 - 71 Ω.m, while the chargeability value range is 4 - 5 msec. In the distribution of high resistivity values with a resistivity value range of 72 - 146 Ω.m, while the chargeability value range is 6 - 10 msec. It was found that there was a zone of gold mineralization zone distribution, and hydrothermal alteration was found in the form of argillic alteration and silicification. It was also found that the distribution direction of the gold mineralization zone was southwest - northeast.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Chargeability, Mineralisasi, Resistivitas. Chargeability, Mineralization, Resistivity |
| Subjects: | Q Science > QE Geology > QE601 Geology, Structural |
| Divisions: | Faculty of Civil Engineering and Planning > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
| Depositing User: | Nadilla Nuzulul Cahyani |
| Date Deposited: | 13 Aug 2024 04:54 |
| Last Modified: | 13 Aug 2024 04:54 |
| URI: | http://repository.its.ac.id/id/eprint/115130 |
Actions (login required)
 |
View Item |