Rekonstruksi Prospek Endapan Mineralisasi di Kaligesing: Pendekatan Terintegrasi Geologi, Geomagnetik, dan Gravitasi Satelit
Keywords
Mineralisasi, Tilt Angle, Total Horizontal Gradien, Struktur Geologi, Gravitasi dan MagnetikAbstract
Kehadiran struktur geologi dan posisinya sebagai fasies pusat pada daerah tengah Pegunungan Menoreh menyebabkan berkembangnya alterasi dan mineralisasi di bagian batuan intrusi andesit. Selain itu daerah fasies pusat/central ini sebagai tempat terbentuknya batuan ubahan epidot-klorit kalsit di sisi barat Gunung Gajah yakni di daerah Kaligesing. Penelitian ini menyelidiki potensi mineralisasi di daerah Kaligesing, Purworejo, Jawa Tengah dengan mengintegrasikan data geofisika gravitasi dan magnetik. Metode gravitasi satelit (GGMPlus) sebagai survei awal dilakukan di area seluas 7x8 km yang mengidentifikasi titik penelitian berdasarkan nilai densitas. Survei geomagnetik yang lebih rinci kemudian dilakukan di plot seluas 3x4 km dengan 248 titik akuisisi yang diukur. Hasil metode gravitasi menunjukkan nilai Anomali Bouguer Lengkap (CBA) berkisar antara 96,9 hingga 128,7 mGal dengan nilai tinggi di bagian barat dan nilai sedang hingga rendah di bagian timur. Variasi ini menunjukkan perbedaan densitas batuan dan potensi kontrol struktural terhadap mineralisasi. Survei geomagnetik mengungkapkan nilai Intensitas Magnetik Total (TMI) berkisar antara -102,7 hingga 584,1 nT dengan daerah bersuseptibilitas tinggi (584,1 hingga 220,3 nT) yang menunjukkan zona-zona yang kaya mineral potensial. Peta Reduce to Pole (RTP) mengungkapkan struktur sesar yang berorientasi utara-selatan dan barat laut-tenggara. Peta filter Total Horizontal Gradien (THG) dan Tilt Angle (TA) menyoroti batas anomali yang menunjukkan sesar-sesar yang mengontrol mineralisasi. Metode geofisika yang terintegrasi dengan data geologi ini secara efektif memetakan struktur-struktur pengendali dan saling menguatkan interpretasi, yang membantu dalam mengidentifikasi zona mineralisasi prospektif.
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Harjanto, A. (2011). Vulkanostratigrafi di daerah Kulon Progo dan sekitarnya, Daerah Istimewa Yogyakarta. 4.
Harjanto, A. (2021). Karakteristik Mangan (Mn) di Daerah Kliripan dan Sekitarnya, Desa Hargorejo, Kecamatan Kokap, Kabupaten Kulon Progo, Propinsi Daerah Istimewa Yogyakarta. Jurnal Geosains dan Teknologi, 4(1), 30–37. https://doi.org/10.14710/jgt.4.1.2021.30-37
Hartono, H. G. (2010). Peran Paleovolkanisme Dalam Tataan Produk Batuan Gunung Api Tersier di Gunung Gajahmungkur, Wonogiri, Jawa Te-ngah. Universitas Padjadjaran.
Indranadi, V. B., Prasetyadi, C., & Toha, B. (2011). Yogyakarta pull-apart basin. The 36th HAGI and 40th IAGI Annual Convention and Exhibition.
Katili, J. A. (1975). Volcanism and plate tectonics in the Indonesian island arcs. Tectonophysics, 26(3–4), 165–188. https://doi.org/10.1016/0040-1951(75)90088-8
Maryono, A., Harrison, R. L., Cooke, D. R., Rompo, I., & Hoschke, T. G. (2018). Tectonics and Geology of Porphyry Cu-Au Deposits along the Eastern Sunda Magmatic Arc, Indonesia. Economic Geology, 113(1), 7–38. https://doi.org/10.5382/econgeo.2018.4542
Pham, L. T., Oksum, E., & Do, T. D. (2019a). Edge enhancement of po-tential field data using the logistic function and the total horizontal gradient. Acta Geodaetica et Geophysica, 54(1), 143–155. https://doi.org/10.1007/s40328-019-00248-6
Pham, L. T., Oksum, E., & Do, T. D. (2019b). Edge enhancement of potential field data using the logistic function and the total horizontal gradient. Acta Geodaetica et Geophysica, 54(1), 143–155. https://doi.org/10.1007/s40328-019-00248-6
Pham, L. T., Oliveira, S. P., Eldosouky, A. M., Abdelrahman, K., Fnais, M. S., Xayavong, V., Andráš, P., & Van Le, D. (2022). Determination of structural lineaments of Northeastern Laos using the LTHG and EHGA methods. Journal of King Saud University - Science, 34(3), 101825. https://doi.org/10.10-16/j.jksus.2022.101825
Pringgoprawiro, H., & Riyanto, B. (1987). Formasi Andesit Tua; Suatu Revisi. Prosiding Pertemuan Ilmiah Tahunan Ikatan Ahli Geologi Indonesia (IAGI) XVI.
Rahardjo, W., Sukandarrumidi, & Rosidi, H. M. D. (2012). Peta geologi lembar Yogyakarta, Jawa (3rd ed.) [Geological map]. Pusat Survei Geologi.
Rajagopalan, S. (2003). Analytic Signal vs. Reduction to Pole: Solutions for Low Magnetic Latitudes. ASEG Extended Abstracts, 2003(2), 1–4. https://doi.org/10.1071/ASEG2003ab136
Rumahorbo, G., Amrupanadi, M., & Setiaji, T. W. (2019). Aplikasi metode geomagnetik untuk mengidentifikasi struktur geologi bawah permukaan sebagai pengontrol adanya mineralisasi pada Desa Kaligono, Kecamatan Kaligesing, Kabupaten Purworejo, Jawa Tengah. Seminar Nasional Kebumian Ke-12.
Satyana, A. H. (2005). Structural indentation of Central Java: A regional wrench segmentation. The 30th HAGI, The 34th IAGI, and The 14th PERHAPI Annual Conference and Exhibition.
Satyana, A. H. (2007, May 1). Central Java, Indonesia – A ‘Terra Incognitia’ in Petroleum Exploration: New Considerations on the Tectonic Evolution and Petroleum Implications. Proc. Indon Petrol. Assoc., 31st Ann. Conv. Thirty-First Annual Convention. https://doi.org/10.29118/IPA.1211.07.G.085
Satyana, A. H., & Purwaningsih, M. E. M. (2002). “Lekukan Struktur Jawa Tengah: Suatu Segmentasi Sesar Mendatar”. Indonesian Association of Geologists (IAGI), Yogyakarta – Central Java Section: ‘Geology of Yogyakarta and Central Java’.
Setijadji, L. D., Kajino, S., Imai, A., & Watanabe, K. (2006). Cenozoic Island Arc Magmatism in Java Island (Sunda Arc, Indonesia): Clues on Relationships between Geodynamics of Volcanic Centers and Ore Mineralization. Resource Geology, 56(3), 267–292. https://doi.org/10.1111/j.1751-3928.2006.tb00284.x
Setiyawan, R. A., & Verdiansyah, O. (2021). Mineralogi Batuan Alterasi Hidrotermal Daerah Kaligono, Kecamatan Kaligesing, Kabupaten Purworejo, Jawa Tengah. Prosiding Nasional Rekayasa Teknologi Industri Dan Informasi XIII, 471–478.
Situmorang, B. (1976, January 6). Wrench Fault Tectonics and Aspects of Hydrocarbon Accumulation in Java. Proc. Indon Petrol. Assoc., 5th Ann. Conv. Fifth Annual Convention. https://doi.org/10.29118/IPA.12-10.53.67
Smyth, H., Hall, R., Hamilton, J., & Kinny, P. (2005, January 1). East Java: Cenozoic basins, volcanoes and ancient basement. Proc. Indon Petrol. Assoc., 30th Ann. Conv. Thirtieth Annual Convention. https://doi.org/10.29118/IPA.629.05.G.045
Soeria-Atmadja, R., Maury, R. C., Bellon, H., Pringgoprawiro, H., Polve, M., & Priadi, B. (1994). The Tertiary Magmatic Belts in Java. Proc. Symp. On Dynamics of Subduction and Its Products, 98–121.
Sopaheluwakan, J. (1994). Critiques and a new perspecrive on basement tectonic studies in Indonesia: A review of current results and their significance in geological exploration. Prosiding Tridasawarsa Puslitbang Geoteknologi LIPI.
Sulistyo, F., Assidhiqie, A. I., & Maulana, A. D. (2019). Integrasi metode pemetaan geologi permukaan dan data geomagnetik pada studi analisa zona alterasi dan struktur pengontrol mineralisasi endapan emas primer tipe sulfida rendah di daerah Plampang, Kalirejo, Kokap, Kabupaten Kulonprogo, Yogyakarta. Seminar Nasional Kebumian Ke-12, 894–938.
Suyanto, F. & Roskamil. (1977). The Geology and Hydrocarbon Aspects of Southern Central Java. https://api.semanticscholar.org/CorpusID:127232690
van Bemmelen, R. W. (1949). The Geology of Indonesia (Issue v. 1,Bag. 1). Nijhoff. https://books.go-ogle.co.id/books?id=DK4JAQAAIAAJ
Verdiansyah, O. (2019). A Desktop Study to Determine Mineralization Using Lineament Density Analysis at Kulon Progo Mountains, Yogyakarta and Central Java Province, Indonesia. Indonesian Journal of Geography, 51(1), 31. https://doi.org/10.22146/ijg.37442
Verdiansyah, O., Muharif, D., & Sukadana, I. G. (2020). Indikasi Mineralisasi Tipe Porfiri di Daerah Sumbersari, Kompleks Pengunungan Kulon Progo, Purworejo, Indonesia. EKSPLORIUM, 41(2), 115. https://doi.org/10.17146/eksplorium.2020.41.2.5959
Widagdo, A., Pramumijojo, S., & Harijoko, A. (2018). Tectonostratigraphy-volcanic of Gajah-Ijo-Menoreh Tertiary volcanic formations in Kulon Progo mountain area, Yogyakarta-Indonesia. IOP Conference Series: Earth and Environmental Science, 212, 012052. https://doi.org/10.1088/1755-1315/212/1/012052
Wijono, S., & Haryoprasetyo, H. (2011). The Influence of Hydrothermal Alteration in the Land Formation Process for the Making of Zonation of Vulnerability of Land Movement in Purwosari-Kebonharjo Region, Girimulyo-Samigaluh District, Kulon Progo Regency, Yogyakarta. Proceedings of the 4th National Seminar on Earth Sciences, Geological Engineering.
Yatini, Y., Zakaria, M. F., & Suyanto, I. (2021). Identification of Gold Mineralization Zones Using Magnetic Data at Gunung Gupit Area, Magelang, Central Java. RSF Conference Series: Engineering and Technology, 1(1), 305–312. https://doi.org/10.31098/cset.v1i1.384
Published
Sep 12, 2025
How to Cite
MUHLISIN, Haris; NUR HANI, Muhammad Alfa; FALAHI, Akmal Nazla.
Rekonstruksi Prospek Endapan Mineralisasi di Kaligesing: Pendekatan Terintegrasi Geologi, Geomagnetik, dan Gravitasi Satelit.
Jurnal Geofisika, [S.l.], v. 23, n. 1, p. 33 - 39, sep. 2025.
ISSN 2477-6084.
Available at: <https://jurnal-geofisika.or.id/index.php/jurnal-geofisika/article/view/679>. Date accessed: 16 sep. 2025.
doi: http://dx.doi.org/10.36435/jgf.v23i1.679.
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