Econ. Environ. Geol. 2002; 35(2): 155-162

Published online April 30, 2002

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Geophysical Survey in the Taran Area on the Central Kalimantan, Indonesia

Jin Dong Cho*, In Joon Kim and In Hwa Park

Korea Institute of Geoscience and Mineral Resources(KIGAM)

Correspondence to :

Jin Dong Cho

jdc@kigam.re.kr

Received: March 11, 2002; Accepted: April 26, 2002

Abstract

There are many typical epithermal deposits scattering in the Taran of central Kalimantan, Indonesia. To get the shallow geological information, we carried out the geophysical exploration: spontaneous potential survey, in-situ magnetic susceptibility measurement and resistivity survey method in this area for a few weeks from September 30th to October 27th in 1999. SP survey (Fluke 27 multimeter)/magnetic susceptibility (EK-7 meter) measurement was carried out with a 250 m X 10 m lattice net in N45oW direction. The dipole-dipole array resistivity survey was conducted with an electrode spacing of α=30 m and electrode separation index n=7 at the line 5. The result shows that was the gold bearing quartz vein area can be divided into two type zone: low sulfidation type and high sulfidation type zone. The low resistivity value in the survey line 5 indicated a fracture zone associated with the high sulfidation
zone.

Keywords spontaneous potential anomaly, electrical resistivity, magnetic susceptibility, sulfidation type, hydrothermal solution

Article

Econ. Environ. Geol. 2002; 35(2): 155-162

Published online April 30, 2002

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Geophysical Survey in the Taran Area on the Central Kalimantan, Indonesia

Jin Dong Cho*, In Joon Kim and In Hwa Park

Korea Institute of Geoscience and Mineral Resources(KIGAM)

Correspondence to:

Jin Dong Cho

jdc@kigam.re.kr

Received: March 11, 2002; Accepted: April 26, 2002

Abstract

There are many typical epithermal deposits scattering in the Taran of central Kalimantan, Indonesia. To get the shallow geological information, we carried out the geophysical exploration: spontaneous potential survey, in-situ magnetic susceptibility measurement and resistivity survey method in this area for a few weeks from September 30th to October 27th in 1999. SP survey (Fluke 27 multimeter)/magnetic susceptibility (EK-7 meter) measurement was carried out with a 250 m X 10 m lattice net in N45oW direction. The dipole-dipole array resistivity survey was conducted with an electrode spacing of α=30 m and electrode separation index n=7 at the line 5. The result shows that was the gold bearing quartz vein area can be divided into two type zone: low sulfidation type and high sulfidation type zone. The low resistivity value in the survey line 5 indicated a fracture zone associated with the high sulfidation
zone.

Keywords spontaneous potential anomaly, electrical resistivity, magnetic susceptibility, sulfidation type, hydrothermal solution

    KSEEG
    Dec 31, 2024 Vol.57 No.6, pp. 665~835

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