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All Journal Geological Engineering E-Journal IJOG : Indonesian Journal on Geoscience Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
Panuju Panuju
PPPTMBG Lemigas
Earth & Planetary Sciences Education Energy Engineering Environmental Science

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STUDI SIKUENSTRATIGRAFI BERDASARKAN HASIL ANALISIS DATA PALINOLOGI PADA SUMUR Y, CEKUNGAN SUMATERA SELATAN Ramadhan, Rizki; Nugroho, Hadi; Aribowo, Yoga; Panuju, Panuju
Geological Engineering E-Journal Vol 5, No 1 (2013): Volume 5, Nomor 1, Tahun 2013
Publisher : Geological Engineering E-Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1034.234 KB)

Abstract

Palynology is a study of biostratigraphy for determining relative age and depositional environment basedon the abundance of palynomorf. Palynology study develompent in Indonesia is still could be more increasedalong with more oil and gas exploration moved to transitional environtment.Study of palynology in stratigraphy is aiming to determine relative age and depositional environment.Besides, palynology could also determine sequence stratigraphy in a large scale of study based on palynomorfpercentage. The study of sequence stratigraphy based on palynomorf percentage has been done in Well-Y, SouthSumatra basin.The method of this research is descriptive method through the microscopic observation on sample 1 - 14from 1400 m depth Y-Well’s cutting and quantitative method calculation and analysis method from thisobservation and calcuation could determine the percentage of each palynomorf. This percentage lead to a trendthen interpretated into several sequencestratigraphy.From this observation, it can be determined characteristic zone of this well. The characteristic zone ofpalynology in this well is divided into 3 zones of palynology; Proxapertites operculatus Zone, Flocshuetziameridionalis Zone, and Stenoclaeniidites papuanus Zone. Each zone shows the characteristic of age fromEocene to Pliocene and also depositional environment from delta plain to pro delta. From palynomorfpercentage trend, we may also see the pattern of sequece stratigraphy works in this depth. The percentage trendshows the time whether sea level fall at the minimum percentage of palynomorf and sea level rise at themaximum percentage of palynomorf. The trend shows the sequence with sequence boundary lying in the startand the end of the sequence and also transgressive surface indicates the sea level start rise. Overall, this wellhas 5 sequences based on this trend; sequence a, sequence b, sequence c, sequence d, and sequence e and all thesequences are bordered by sequence boundary.
Nannoplankton Assemblage Succession Throughout Cretaceous/ Tertiary Boundary in the “P” Well Section, Santos Basin, Brazil Panuju, Panuju
Indonesian Journal on Geoscience Vol 6, No 1 (2011)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1087.871 KB) | DOI: 10.17014/ijog.v6i1.115

Abstract

DOI: 10.17014/ijog.v6i1.115The massive change in calcareous nannoplankton assemblages throughout Cretaceous/Tertiary (K/T) boundary (65.5 M.a.) has been illustrated by several authors. The diverse and abundant assemblage disappears suddenly above the Cretaceous/Tertiary boundary. This event is related to the most dramatic environmental changes in the Earths history due to the catastrophic events, those are meteorite impact (Chicxulub) and supervolcano eruption (Deccan) occurring at the end of Cretaceous. The succeeding age was a time of rapid evolution of nannoplankton during Paleocene. A quantitative method analysis of nannoplankton throughout Maastrichtian to Paleocene of “P” well section, Santos Basin, Brazil, indicated that the nannoplankton assemblages abruptly decrease in diversity and abundance and mostly change in species composition. The various complex shapes of species at Maastrichtian also underwent changing to simple plain shapes and small at Paleocene. The sedimentary section ranges from the top of zone CC23 (Coccolith Cretaceous 23) to NP9 (Nannoplankton Paleogen 9). It is bounded by the Last Occurrence (LO) of Tranolithus pachelosus at the base and Fasciculithus tympaniformis at the top. The biostratigraphic discontinuity characterized by the absence of zone CC26 to NP4 is an indicator for the presence of an unconformity at K/T boundary within analyzed section. The Cretaceous nannoplankton assemblages are dominated by Genera Watznaueria, Micula, Arkhangelskiella, Cribrosphaerella, Eiffellithus, Predicosphaera, and Retecapsa, whilst the Paleocene assemblages are dominated by Genera Toweius, Ericsonia, and Coccolithus. Survivor Cretaceous species recovered into Tertiary sediments consist of Braarudosphaera bigelowii, Biscutum melaniae, Neocrepidolithus neocrassus, Placozygus sigmoides, Cyclagelosaphaera reinhardtii, Markalius inversus, and Scapolithus fossilis.
Perkembangan Fasies Sedimen Formasi Mamberamo Berumur Miosen Akhir-Pliosen di Cekungan Papua Utara Mamengko, David Victor; B.Sendjadja, Yoga; Mulyana, Budi; Panggabean, Hermes; Haryanto, Iyan; Lelono, Eko Budi; Musu, Juwita Trivianty; Panuju, Panuju
Jurnal Geologi dan Sumberdaya Mineral Vol 20, No 1 (2019): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.459 KB) | DOI: 10.33332/jgsm.geologi.20.1.37-47

Abstract

North Papua Basin is a fore arc basin located in northern coastal of Papua Island. This basin filled by Middle-Upper Miocene turbidite sediment and overlied by Upper Miocene – Quarternary clastic sediment. Upper Miocene – Quaternary clastic sediments (Mamberamo Formation) composed by interbedding conglomerate, sandstone and shale as molasses deposit. A detailed stratigraphic study was performed to identify facies and its association of the Mamberamo Formation to that give a new perspective on the characteristics and development of facies succession of Lower Mamberamo Formation. Result  shows that the Lower Mamberamo Formation consists of three facies: A) cross bedding sandstone (subtidal), B) heterolothic silty shale (intra-tidal), C) carbonaceous shale (supra-tidal) deposited on Late Miocen to Plio-Pleistocene during centra range orogeny (syn-orogeny) as molasses deposits.Keywords: Fore arc basin, North Papua Basin, Mamberamo Formation, molasse deposits.
Co-Authors Agus Priyantoro Ali Djamhuri B.Sendjadja, Yoga David Victor Mamengko Eko Budi Lelono, Eko Budi Hadi Nugroho Hadimuljono, Jonathan Setyoko Hermes Panggabean Iyan Haryanto, Iyan Julikah, Julikah Musu, Juwita Trivianty Rahmat, Ginanjar Rahmat, Ginanjar Rizki Ramadhan Sriwidjaya, Sriwidjaya Wicaksono, Bambang WICAKSONO, BAMBANG Wijaksono, Egie Wijaksono, Egie Yoga Aribowo