Delineation of Sulfide Mineralization Zone Based on Geomagnetic and Induced Polarization (IP) Methods in Sangon-II, Kokap, Kulonprogo Districts, Yogyakarta
Main Article Content
Abstract
We used geomagnetic and 2D induced polarization (IP) methods to identify potential gold mineralization zones in the Sangon-II Kolonprogo area, Yogyakarta. Historical geological data indicate that gold mineralization is associated with quartz veins. Magnetic field measurements at 200 points and 8 IP lines were taken in the study area. The results of the Reduction to Pole (RTP) analysis of magnetic data and IP inversion modeling show how the mineralized areas are distributed. Low magnetic anomaly values (<500 nT), medium (500-1000 nT), and high values (>1000 nT) are interpreted as high, medium, and low alteration zones, respectively. By combining resistivity and chargeability values, the IP inversion results show the zoning of mineralized areas in the Sangon-II area. Low resistivity (<50 Ωm) to medium (50-300 Ωm) and high chargeability (>30ms) are zones of saturated water layers, soil on the surface of the weathering of igneous rocks. Resistivity (50-300 Ωm) and medium chargeability (10-30 ms) are alteration zones of silica-clay, argillic, and propylitic. Medium resistivity (50-300) Ωm and high chargeability (>30 ms) are sulfide mineralization zones. High resistivity (> 300 Ωm) and low chargeability (<10 ms) are unaltered volcanic rocks, andesite-rhyodacite, igneous rock, Nanggulan Formation. While resistivity (> 300 Ωm) and high chargeability (> 30 ms) are zones of igneous rock with high metal content as veins. The results of magnetic and IP analysis indicate the presence of a fault with the direction of N350E. This fault controls the alteration process and sulfide mineralization in the Sangon-II area. The distribution of mineralization areas is in the east, extending to the south, around the fault. The results of 3D modeling show that this area is quite promising.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
References
Adepelumi, A. A., Yi, M.-J., Kim, J.-H., Ako, B. D., & Son, J. S. (2006). Integration of surface geophysical methods for fracture detection in crystalline bedrocks of southwestern Nigeria. Hydrogeology Journal, 14(7), 1284–1306. doi: https://doi.org/10.1007/s10040-006-0051-2
Allis, R. G. (1990). Geophysical anomalies over epithermal systems. Journal of Geochemical Exploration, 36(1–3), 339–374. Doi: https://doi.org/10.1016/0375-6742(90)90060-N
Apparao, A., Srinivas, G. S., Sarma, V. S., Thomas, P. J., Joshi, M. S., & Prasad, P. R. (2000). Depth of detection of highly conducting and volume polarizable targets using induced polarization. Geophysical Prospecting, 48(5), 797–813. doi: https://doi.org/10.1046/j.1365-2478.2000.00212.x
Arribas Jr., A. (1995). Characteristics of high-sulfidation epithermal deposits, and their relation to magmatic fluid. Mineralogical Association of Canada Short Course, 23, 419–454.
Bahri, S., Zakaria, M. F., & Yatini, Y. (2016). Eksplorasi Mineral Menggunakan Metode Polarisasi Terinduksi di Daerah Kasihan, Kecamatan Tegalombo, Kabupaten Pacitan. [Bachelor's Thesis]. Universitas Islam Negeri Sunan Kalijaga.
Boschi, F. (2012). Magnetic prospecting for the archaeology of Classe (Ravenna). Archaeological Prospection, 19(3), 219–227. doi: https://doi.org/10.1002/arp.1430
Burazer, M., Grbović, M., & Žitko, V. (2001). Magnetic data processing for hydrocarbon exploration in the Pannonian Basin, Yugoslavia. Geophysics, 66(6), 1669–1679. doi: https://doi.org/10.1190/1.1486769
Camarero, P. L., & Moreira, C. A. (2017). Geophysical investigation of earth dam using the electrical tomography resistivity technique. REM-International Engineering Journal, 70(1), 47–52. doi: https://doi.org/10.1590/0370-44672016700099
Doyle, H. A. (1990). Geophysical exploration for gold; a review. Geophysics, 55(2), 134–146. doi: https://doi.org/10.1190/1.1442820
Ercan, Ö. A., Şeren, A., & Elmas, A. (2014). Gold and Silver Prospection Using Magnetic, Radiometry and Microgravity Methods in the Kışladağ Province of Western Turkey. Resource Geology, 64(1), 25–34. doi: https://doi.org/10.1111/rge.12024
Evrard, M., Dumont, G., Hermans, T., Chouteau, M., Francis, O., Pirard, E., & Nguyen, F. (2018). Geophysical Investigation of the Pb–Zn Deposit of Lontzen–Poppelsberg, Belgium. Minerals, 8(6), 233. doi: https://doi.org/10.3390/min8060233
Handyarso, A., & Kadir, W. G. A. (2017). Gravity Data Decomposition Based on Spectral Analysis and Halo Wavelet Transform, Case Study at Bird’s Head Peninsula, West Papua. Journal of Engineering & Technological Sciences, 49(4), 423-437. doi: https://doi.org/10.5614/j.eng.technol.sci.2017.49.4.1
Hedenquist, J. W., Arribas, A., & Gonzalez-Urien, E. (2000). Exploration for epithermal gold deposits. In S. G. Hagemann & P. E. (Eds.), Brown, Gold in 2000 (pp. 245–277). Society of Economic Geologists. https://doi.org/10.5382/Rev.13.07
Hedenquist, J. W., Harris, M., & Camus, F. (2012). Geology and Genesis of Major Copper Deposits and Districts of the WorldA Tribute to Richard H. Sillitoe. Society of Economic Geologists. doi: https://doi.org/10.5382/SP.16
Irvine, R. J., & Smith, M. J. (1990). Geophysical exploration for epithermal gold deposits. Journal of Geochemical Exploration, 36(1–3), 375–412. doi: https://doi.org/10.1016/0375-6742(90)90061-E
Lenhare, B. D., & Moreira, C. A. (2020). Geophysical prospecting over a meta-ultramafic sequence with indicators of gold mineralization in Rio Grande do Sul State, Southernmost Brazil. Pure and Applied Geophysics, 177(11), 5367–5383. doi: https://doi.org/10.1007/s00024-020-02559-0
Lévy, L., Maurya, P. K., Byrdina, S., Vandemeulebrouck, J., Sigmundsson, F., Árnason, K., Ricci, T., Deldicque, D., Roger, M., & Gibert, B. (2019). Electrical resistivity tomography and time-domain induced polarization field investigations of geothermal areas at Krafla, Iceland: comparison to borehole and laboratory frequency-domain electrical observations. Geophysical Journal International, 218(3), 1469–1489. doi: https://doi.org/10.1093/gji/ggz240
Locke, C. A., Johnson, S. A., Cassidy, J., & Mauk, J. L. (1999). Geophysical exploration of the Puhipuhi epithermal area, Northland, New Zealand. Journal of Geochemical Exploration, 65(2), 91–109. doi: https://doi.org/10.1016/S0375-6742(98)00067-3
Mashhadi, S. R., & Ramazi, H. (2018). The application of resistivity and induced polarization methods in identification of skarn alteration haloes: A case study in the Qale-Alimoradkhan Area. Journal of Environmental and Engineering Geophysics, 23(3), 363–368. doi: https://doi.org/10.2113/JEEG23.3.363
Mohammadzadeh Moghaddam, M., Mirzaei, S., Nouraliee, J., & Porkhial, S. (2016). Integrated magnetic and gravity surveys for geothermal exploration in Central Iran. Arabian Journal of Geosciences, 9, 506. doi: https://doi.org/10.1007/s12517-016-2539-y
Pramumijoyo, P., Idrus, A., Warmada, I. W., & Yonezu, K. (2017). Geology, geochemistry and hydrothermal fluid characteristics of low sulfidation epithermal deposit in the Sangon Area, Kokap, Special Region of Yogyakarta. Journal of Applied Geology, 2(1), 48–58. doi: https://doi.org/10.22146/jag.42442
Purnamawati, D. I., & Tapilatu, S. R. (2012). Genesa Dan Kelimpahan Mineral Logam Emas, Dan Asosiasinya Berdasarkan Analisis Petrografi, Dan Atomic Absorbtion Spectrophotometry (Aas), Di Daerah Sangon, Kabupaten Kulonprogo, Propinsi Diy. Jurnal Teknologi, 5(2), 163–171. https://ejournal.akprind.ac.id/index.php/jurtek/article/view/976
Rabeh, T. (2009). Prospecting for the ferromagnetic mineral accumulations using the magnetic method at the Eastern Desert, Egypt. Journal of Geophysics and Engineering, 6(4), 401–411. doi: https://doi.org/10.1088/1742-2132/6/4/008
Raharjo, W., Sukandarrumidi, R. H. M. D., & Rosidi, H. M. D. (1995). Peta Geologi Lembar Yogyakarta, Jawa,[map] 1: 100.000. Bandung: Direktorat Geologi.
Sarlak, B., & Aghajani, H. (2017). Archaeological investigations at Tepe Hissar-Damghan using gravity and magnetics methods. Journal of Research on Archaeometry, 2(2), 19–34. doi: https://doi.org/10.29252/jra.2.2.19
Sillitoe, R. H. (2000). Styles of high-sulphidation gold, silver and copper mineralisation in porphyry and epithermal environments. Proceedings of the Australasian Institute of Mining and Metallurgy, 305(1), 19–34.
Sumner, J. S. (2012). Principles of induced polarization for geophysical exploration. Elsevier.
Tong, M., Li, L., Wang, W., & Jiang, Y. (2006). A time‐domain induced‐polarization method for estimating permeability in a shaly sand reservoir. Geophysical Prospecting, 54(5), 623–631. doi: https://doi.org/10.1111/j.1365-2478.2006.00568.x
Utama, B. S., Yatini, Y., Giamboro, W. S., & Hamdallah, H. (2024). Application of Geoelectric Method to Determine the Distribution of Liyangan Temple in Central Java. AMERTA, 42(2), 123–136. doi: https://doi.org/10.55981/amt.2024.4932
Yatini, Y. (2019). Influence of clay on time domain induced polarization, Indonesian Journal of Science and Technology, 3(1), 1-10. doi: https://doi.org/10.17509/ijost.v3i1.10794
Yatini, Y., Santoso, D., Laesanpura, A., & Sulistijo, B. (2018). Physical Modeling on Time Domain Induced Polarization (TDIP) Response of Metal Mineral Content. Indonesian Journal of Applied Physics, 8(2), 57–66.
Yatini, Y., Suyanto, I., & Puspaningrum, D. (2019). Application of polarization method (IP) to delineate the gold mineralization zones in Cihonje Areas, Banyumas Regency, Province of Central Java. IOP Conference Series: Materials Science and Engineering, 546(7), 072013. doi: https://doi.org/10.1088/1757-899X/546/7/072013
Yusefi, M. R., Hafizi, M. K., & Salari, B. (2017). Gold exploration using induced polarization and resistivity methods in Meyduk-Latala area. 79th EAGE Conference and Exhibition 2017, 2017(1), 1–3. doi: https://doi.org/10.3997/2214-4609.201701546
Zakaria, M. F. (2018). Identification of Heat Source and Alteration Zone of Parangwedang Geothermal System using Magnetic Method. EAGE-HAGI 1st Asia Pacific Meeting on Near Surface Geoscience and Engineering, 2018(1), 1–4. doi: https://doi.org/10.3997/2214-4609.201800342
Zhang, G., Lü, Q.-T., Lin, P.-R., & Zhang, G.-B. (2019). Electrode array and data density effects in 3D induced polarization tomography and applications for mineral exploration. Arabian Journal of Geosciences, 12, 1–17. doi: https://doi.org/10.1007/s12517-019-4341-0