Petrological Characteristic and Whole Rock Geochemistry of Metamorphic Rocks in Melangè Complex of Ciletuh Area, West Java, Indonesia

Rinaldi Ikhram, Ildrem Syafri, Mega Fatimah Rosana


Melangè Complex of Ciletuh Area, West Java, Indonesia is located at 106 ° 23 '38.9 "- 106 ° 25' 27.6" E  and 7 ° 14 '27.6 "- 7 ° 12' 46.2" S. This area has unique geological features where the Early Cenozoic uplifted subduction rocks such as ophiolites and metamorphic rocks are exposed. This study aimed to determine the condition of the stratigraphic position and geological structure of metamorphic rock unit in the field, to find out the metamorphic facies and their evolution, to know the parental rocks (protoliths) of metamorphic rocks, and to interpret tectonic environments for the formation of metamorphic rocks based on stratigraphy, geological structure, petrography, and geochemistry. Study of literatures, geological mapping, petrology and geochemical analyses were used as methods of this research. The entire analysis is combined as a guidance in interpretation of petro-tectonic environment. Distribution of metamorphic rock outcrops found in several places, such as, Citisuk River, Cikopo River and Cikarikil River. Based on petrography analysis, metamorphic rocks types consist of schistose amphibolite, various type of greenschist, phyllite and quartzite. The protolith of metamorphic rocks in Ciletuh is quite diverse, namely metasediments such as pelitic, psammitic, calc-silicate sediment, and meta-igneous such as gabbro and basalt. The presence of epidote, chlorite, and calcite in schistose amphibolite show retrograde metamorphism process in lower temperature-pressures condition. The occurance of quartz and calcite vein in several samples was shown as an indication of hydrothermal alteration. Based on geochemical characteristics, the result showed that sedimentary source of metasedimentary rocks were derived from the volcanic arc environment. While, metabasalt rocks were originated from the Island Arc tectonic environment. According to the association, these metamorphic rocks were formed by regional metamorphism, as the result of subduction process and orogenic event. Thus, retrograde metamorphism indicates the lifting or accretion process that caused by subsecuent tectonic activity.


Ciletuh; metamorphic rocks; petrography; geochemsitry.

Full Text:



M. M. Mukti, S. Aribowo, and A. Nurhidayati, “Origin of mélange complexes in the Sunda and Banda arcs: Tectonic, sedimentary, or diapiric mélange,†IOP Conf. Ser. Earth Environ. Sci., vol. 118, no. 1, 2018.

A. Patonah and H. Permana, “Basement Characteristic Western Part of Java, Indonesia ; Case Study in Bayah Area, Banten Province,†Int. J. Adv. Sci. Eng. Inf. Technol., vol. 8, no. 5, p. 2135, 2018.

S. Thayyib, Endang, E. L. Said, Siswoyo, and S. Prijomarsono, “The Status of Melange Complex in Ciletuh Area South - West Java,†in 6th Annual Converntion - Proceeding Indonesian Pertoleum Association, 1977, pp. 241–253.

H. Satyana, “New Consideration on the Cretaceous Subduction Zone of Ciletuh-Luk Ulo-Bayat-Meratus: Implications for Southeast Sundaland Petroleum Geology,†in Proceedings, Indonesian Petroleum Association, 2014, vol. 38th, no. May.

Munasri, S. Siregar, H. Pennana, and S. Djoehanah, “Karakterisitik Melange Di Daerah Ciletuh, Jawa Barat dan Studi Deformasi Batuan Ofiolit,†Lap. Penelit. Puslitbang Geoteknologi - LIPI Tahun Anggoran 1999/2000, no. 1975, pp. 10–29, 2000.

I. Rinaldi, “Studi petrologi batuan ofiolit dan metamorf di blok gunung beas, daerah ciletuh, kecamatan ciemas, kabupaten sukabumi, provinsi jawa barat,†Universitas Padjadjaran, Bandung, 2015.

A. Prasetyo, J. S. Romora, Yeftamikha, L. B. Fransiskus, and N. I. Setiawan, “A petrographical review of metamorphic rocks from Ciletuh Complex, in West Java and their related metamorphism in Central Indonesia region,†Semin. Nas. Kebumian KE-9, pp. 624–633, 2016.

L. Airaghi, C. J. Warren, J. de Sigoyer, P. Lanari, and V. Magnin, “Influence of dissolution/reprecipitation reactions on metamorphic greenschist to amphibolite facies mica 40Ar/39Ar ages in the Longmen Shan (eastern Tibet),†J. Metamorph. Geol., vol. 36, no. 7, pp. 933–958, 2018.

S. J. Shand, Eruptive Rocks: Their Genesis, Composition, Classification, and Their Relation to Ore-Deposits, with a Chapter on Meteorites. 1943.

T. Ohta and H. Arai, “Statistical empirical index of chemical weathering in igneous rocks: A new tool for evaluating the degree of weathering,†Chem. Geol., pp. 280–297, 2007.

N. Nakamura, “Determination of REE, Ba, Fe, Mg, Na and K in carbonaceous and ordinary chondrites,†Geochim. Cosmochim. Acta, vol. 32, pp. 757–775, 1974.

E. D. Mullen, “MnO/TiO2/P2O5: a minor element discriminant for basaltic rocks of oceanic environments and its implications for petrogenesis,†Earth Planet. Sci. Lett., vol. 62, pp. 53–62, 1983.

M. R. Gillespie and M. T. Styles, “Classification of Igneous Rocks: Rock Classification Scheme (BGS),†Br. Geol. Surv. Res. Rep. (2nd Ed., 1999.

H. G. F. Winkler, Petrogenesis of metamorphic rocks. Springer Science & Business Media, 2013.

J. J. Ague, “Element mobility during regional metamorphism in crustal and subduction zone environments with a focus on the rare earth elements (REE),†Am. Mineral., vol. 102, no. 9, pp. 1796–1821, 2017.

L. E. Gao, L. Zeng, and P. D. Asimow, “Contrasting geochemical signatures of fluid-absent versus fluid-fluxed melting of muscovite in metasedimentary sources: The Himalayan leucogranites,†Geology, vol. 45, no. 1, pp. 39–42, 2017.

S. Sun, W. F. McDonough, and W. McDonough, “Implications for mantle composition and processes Chemical and isotopic systematics of oceanic basalts: Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes,†Geol. Soc., vol. 42, pp. 313–345, 1989.

J. B. Murphy, “Igneous Rock Associations 8. Arc magmatism II: Geo-chemical and isotopic characteristics,†Geosci. Canada, vol. 34(1), 2007.

G. E. Bebout and S. C. Penniston-Dorland, “Fluid and mass transfer at subduction interfaces-The field metamorphic record,†Lithos, vol. 240–243, pp. 228–258, 2016.

M. M. V. G. Silva, M. M. S. Cabral Pinto, and P. C. S. Carvalho, “Major, trace and REE geochemistry of recent sediments from lower Catumbela River (Angola),†J. African Earth Sci., vol. 115, pp. 203–217, 2016.

G. H. Girty, R. W. Barber, and C. Knaack, “REE, Th, and Sc evidence for the depositional setting and source rock characteristics of the Quartz Hill chert, Sierra Nevada, California,†in Processes Controlling the Composition of Clastic Sediments, Geological Society America Spec, 2013, pp. 109–119.

R. M. Palin, O. M. Weller, D. J. Waters, and B. Dyck, “Quantifying geological uncertainty in metamorphic phase equilibria modelling; A Monte Carlo assessment and implications for tectonic interpretations,†Geosci. Front., vol. 7, no. 4, pp. 591–607, 2016.

C. Yakymchuk, “Applying phase equilibria modelling to metamorphic and geological processes: Recent developments and future potential,†Geosci. Canada, vol. 44, no. 1, pp. 27–46, 2017.

G. Nicoli, J.-F. Moyen, and G. Stevens, “Diversity of burial rates in convergent settings decreased as Earth aged,†Sci. Rep., vol. 6, p. 26359, May 2016.

B. R. Jicha and O. Jagoutz, “Magma production rates for intraoceanic arcs,†Elements, vol. 11, no. 2, pp. 105–112, 2015.

F. Xiong, J. Yang, P. T. Robinson, J. Gao, Y. Chen, and S. Lai, “Petrology and geochemistry of peridotites and podiform chromitite in the Xigaze ophiolite, Tibet: Implications for a suprasubduction zone origin,†J. Asian Earth Sci., vol. 146, pp. 56–75, 2017.

E. L. Advokaat, M. L. M. Bongers, A. Rudyawan, M. K. BouDagher-Fadel, C. G. Langereis, and D. J. J. van Hinsbergen, “Early Cretaceous origin of the Woyla Arc (Sumatra, Indonesia) on the Australian plate,†Earth Planet. Sci. Lett., vol. 498, no. February, pp. 348–361, 2018.

D. M. Schiller, “Eocene submarine fan sedimentation in Southwest Java,†in Proceedings Indonesian Petroleum Association Twentieth Annual Convention, 1991, no. October, pp. 125–181.

L. Sarmili and D. Setiady, “Pembentukan Prisma Akresi Di Teluk Ciletuh Kaitannya Dengan Sesar Cimandiri, Jawa Barat,†J. Geol. Kelaut., vol. 13, no. 3, p. 173, 2016.

H. Iyan, “Tektonik Sesar Cimandiri, Provinsi Jawa Barat,†Bull. Sci. Contrib., vol. 15, no. 3, pp. 255–274, 2017.



  • There are currently no refbacks.

Published by INSIGHT - Indonesian Society for Knowledge and Human Development