Ramdhani, Taufik Iman (2013) PENDETEKSIAN PENYEBARAN ZONA MINERALISASI MENGGUNAKAN METODE GEOMAGNET, RESISTIVITY, DAN INDUCED POLARIZATION (IP) KAWASAN FREKUENSI DAERAH NUNGGUL GUNUNG PONGKOR KABUPATEN BOGOR PROPINSI JAWA BARAT. Other thesis, UPN "VETERAN" YOGYAKARTA.
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Abstract
Telah dilakukan penelitian geofisika dengan menggunakan metode geomagnet dan
induced polarization (IP) kawasan frekuensi di daerah prospek Nunggul Gunung
Pongkor. Penelitian bertujuan untuk menganalisa dan mengidentifikasi daerah
penyebaran alterasi-mineralisasi dari hasil interpretasi peta total intensitas magnet,
penampang 2D resistivity dan IP, model 3D resistivity dan IP. Lintasan pengukuran
yang digunakan berjumlah 6 lintasan untuk pengukuran metode geomagnet, dengan
spasi antar titik 5 meter, spasi antar lintasan 400 meter, dan total jumlah titik
pengukuran geomagnet 3329 titik, arah lintasan pengukuran N 600 E. Dari 6
lintasan geomagnet terdapat 4 lintasan yang dilakukan pengukuran IP, yaitu
GP1700, GP2100, GP2500, dan GP2900. Pengukuran IP dilakukan dengan jarak
antar titik elektroda 50 meter. Pengolahan data penelitian ini menggunakan
software Geosoft Oasis Montaj v6.4.2, Res3Dinv, Surfer 10, dan Rockware
Rockwork v.2006 dan v.15.
Dari hasil interpretasi yang telah dilakukan, zona alterasi yang berkembang di
daerah penelitian adalah alterasi argilik dan dan alterasi silisik. Pada hasil
penampang peta total intensitas magnet yang telah dilakukan reduksi ke kutub dan
hasil upward continuation 200 meter, zona alterasi-mineralisasi terdapat nilai
intensitas magnetik sedang cenderung tinggi dengan harga 44800-45000 nT.
Daerah alterasi argilik memiliki nilai resitivitas dengan harga 5 ohm.m – 80 ohm.m,
dan zona alterasi silisik ditunjukkan dengan nilai resistivity dengan harga >100
ohm.m. Daerah prospek mineralisasi logam sulfida diprediksi pada nilai PFE
>2,5%.
Kata kunci : Argilik, Geomagnetik, Induced Polarization, PFE, Resistivity, Silisik
Geophysical research has been carried out using geomagnetic and induced
polarization (IP) frequency domain in the prospect area Nunggul Mount Pongkor.
The research aims to analyze and identify areas of alteration-mineralization
dissemination of the results of total magnetic intensity map interpretation, section
2D resistivity and IP, resistivity and IP 3D models. Running track measurements
used were 6 track for geomagnetic measurement method, with a space between a
point 5 meters, spaced between a track 400 meter, and a total number of 3329 points
geomagnetic measurement point, direction of the track measurements N 600 E.
Geomagnetic tracks of 6 there are 4 tracks that IP measurements, the GP1700,
GP2100, GP2500, and GP2900. IP measurements performed with electrode spacing
of 50 meter point. This study uses data processing software Geosoft Oasis Montaj
v6.4.2, Res3Dinv, Surfer 10, and Rockware Rockwork v.2006 and v.15.
Interpretation of the results that have been done, the alteration zones in the study
area is developed alteration and argillic and silicification alteration. In the results
section total magnetic intensity map has been done and the results of reduction to
the pole upward continuation 200 meters, there is a zone of alterationmineralization
magnetic intensity values are likely to be high with the values
between 44800-45000 nT. Argillic alteration area has resitivitas value with values
ohm.m 5 - 80 ohm.m, and silicfication alteration zones indicated by resistivity value
with values >100 ohm.m. Metal sulphide mineralization prospect area predicted on
PFE values >2.5%.
Keyword : Argillic, Geomagnetic, Induced Polarization, PFE, resist silicification
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | Q Science > QC Physics |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Darsini Darsini |
| Date Deposited: | 14 Jun 2016 07:21 |
| Last Modified: | 14 Jun 2016 07:21 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/3710 |
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