ANALISIS SPEKTRUM DATA GRAVITASI PADA DAERAH POTENSI EMAS PONGKOR, JAWA BARAT

ELENA NURCAHYATI, NIM. 12620001 (2016) ANALISIS SPEKTRUM DATA GRAVITASI PADA DAERAH POTENSI EMAS PONGKOR, JAWA BARAT. Skripsi thesis, UIN SUNAN KALIJAGA YOGYAKARTA.

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Abstract

This analysis was conducted in the area of data gravitational potential pongkor by the number of measurementpoint 7096 points. Pongkor is one of the districts included in the Mining Working Area (WKP) of PT Antam Tbk. This area has the potential of alluvial gold content which is quite high. This study aims to cultivate a complete Bouguer anomaly data by using spectrum analysis and modeling below the surface. Gravity data spectrum analysis was per-formed on six longitudinal- section in the area of research, and the separation process anomalies was done by moving averaging method. The results were obtained in the form of depth value of regional anomalies source 1293 meters, for local anomaly by 23 meters in width 29x23. It was based on modelling results that was done on A-A’ slice, incision B-B’ and the incision C-C’. there was dominat rock layer such as breccia with a density of 2.50 gr/cm3, Andesite 2.77 gr/cm3, Overburden 1.9 gr/cm3, Tuff 2 gr/cm3, Dasit is 2.69 gr/cm3, and Intrusion with 2.8 density gr/cm3. Suspected intrusions and their fault horizontally with the direction northeast-southwest were identified in the research area.This analysis was conducted in the area of data gravitational potential pongkor by the number of measurementpoint 7096 points. Pongkor is one of the districts included in the Mining Working Area (WKP) of PT Antam Tbk. This area has the potential of alluvial gold content which is quite high. This study aims to cultivate a complete Bouguer anomaly data by using spectrum analysis and modeling below the surface. Gravity data spectrum analysis was per-formed on six longitudinal- section in the area of research, and the separation process anomalies was done by moving averaging method. The results were obtained in the form of depth value of regional anomalies source 1293 meters, for local anomaly by 23 meters in width 29x23. It was based on modelling results that was done on A-A’ slice, incision B-B’ and the incision C-C’. there was dominat rock layer such as breccia with a density of 2.50 gr/cm3, Andesite 2.77 gr/cm3, Overburden 1.9 gr/cm3, Tuff 2 gr/cm3, Dasit is 2.69 gr/cm3, and Intrusion with 2.8 density gr/cm3. Suspected intrusions and their fault horizontally with the direction northeast-southwest were identified in the research area.

Item Type: Thesis (Skripsi)
Additional Information: Asih Melati, S.Si., M.Sc
Uncontrolled Keywords: Spectrum Analysis, Gravity, Moving Average, Modeling.
Subjects: Fisika
Divisions: Fakultas Sains dan Teknologi > Fisika (S1)
Depositing User: Drs. Bambang Heru Nurwoto
Date Deposited: 23 Jan 2017 08:45
Last Modified: 23 Jan 2017 08:45
URI: http://digilib.uin-suka.ac.id/id/eprint/23693

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