Pratama, Firman Aditya Satria (2019) Pemetaan Persebaran Zona Mineralisasi Endapan Epitermal Berdasarkan Nilai Resistivitas Data Controlled Source Audio-Magnetotelluric (CSAMT) Lapangan “AK” Cibaliung, Banten – PT Antam. Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
1. Laporan Tugas Akhir_Firman Aditya.pdf Download (3MB) | Preview |
Preview |
Text
1. Laporan Tugas Akhir_Firman Aditya.pdf Download (3MB) | Preview |
![[thumbnail of 03411540000037-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
03411540000037-Undergraduate_Thesis.pdf Download (3MB) |
Abstract
Cibaliung merupakan lapangan deposit emas epitermal sulfidasi rendah dengan vein Cikoneng dan Cibitung. Guna mengembangkan lapangan pertambangan maka dilakukan eksplorasi, Eksplorasi pendahuluan dilakukan menggunakan metode Controlled Source Audio-Magnetotelluric (CSAMT) yang bertujuan untuk mengidentifikasi persebaran zona mineralisasi epitermal di daerah penelitian. Pengukuran metode CSAMT menggunakan konfigurasi skalar pada 12 lintasan dengan 1381 titik pengukuran bertujuan memetakan persebaran zona mineralisasi dan alterasi berdasarkan kontras nilai resistivitas. Pengolahan data CSAMT dilakukan menggunakan proses editing dan diinversi menggunakan algoritma NLCG dengan batas frekuensi minimal 10 Hz. Berdasarkan pengolahan data CSAMT. Diperoleh anomali resistivitas sangat rendah 5 – 40 Ω.m diduga sebagai litologi daerah penelitian yaitu batuan andesit-basaltik dan perselingan batupasir dan batulempung serpih dengan sisipan batugamping. Resistivitas sangat rendah 40 – 50 Ω.m merupakan alterasi propilitik, resistivitas rendah 50 – 100 Ω.m merupakan alterasi argilik, resistivitas sedang – tinggi 100 – 1000 Ω.m didefinisikan sebagai zoan silisifikasi, dan resistivitas Sangat tinggi >1000 Ω.m merupakan silika. merupakan zona silisifikasi. Zona prospek didominasi oleh alterasi argilik hingga silisik yang mempunyai arah kemenerusan horizontal seperti Pola struktur berarah baratlaut-tenggara (NW-SE).
=================================================================================================================================
Cibaliung is a low sulfidation epithermal gold deposit field with veins of Cikoneng and Cibitung. In order to develop the mining Controlled Source Audio-Magnetotelluric (CSAMT) method which aimed to identify the distribution of epithermal mineralized zones in the study area. In this case, CSAMT method uses scalar configuration on 12 tracks with 1381 measurement points aimed at mapping the distribution of mineralization and alteration zones based on contrast resistivity values. CSAMT data processing is done using the editing process and inversed using the NLCG algorithm with a minimum frequency limit of 10 Hz. Based on the processing of CSAMT data, very low resistivity anomalies of 5 - 40 Ω.m were obtained as the lithology of the study area, andesite-basaltic rocks and sandstone and claystone interfering with limestone inserts. Very low resistivity 40 - 50 Ω.m is a propylitic alteration, low resistivity 50 - 100 Ω.m is an argillic alteration, medium - high resistivity 100 - 1000 Ω.m is defined as silisification zone, and very high resistivity >1000 Ω.m is a silica. The prospect zone is dominated by argillic to silicic alteration which has a direction of horizontal continuity such as the pattern of the Sumatra structure, which is NW-SE direction.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSGf 622.187 Pra p-1 2019 |
| Uncontrolled Keywords: | Alterasi, Cibaliung, CSAMT, Epitermal, Resistivitas |
| Subjects: | Q Science > QC Physics > QC585.75.S55 Silica Q Science > QE Geology > QE601 Geology, Structural |
| Divisions: | Faculty of Civil, Environmental, and Geo Engineering > Geophysics Engineering > 33201-(S1) Undergraduate Theses |
| Depositing User: | Firman Aditya Satria Pratama |
| Date Deposited: | 23 Apr 2024 05:00 |
| Last Modified: | 23 Apr 2024 05:00 |
| URI: | http://repository.its.ac.id/id/eprint/64450 |
Actions (login required)
 |
View Item |