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All Journal METAMORFOSA Journal of Biological Sciences Bulletin of Scientific Contribution : Geology IJOG : Indonesian Journal on Geoscience Jurnal Master Pariwisata (JUMPA) Jurnal RISET Geologi dan Pertambangan Jurnal Geocelebes Jurnal Teknologi Mineral dan Batubara Journal of Geoscience, Engineering, Environment, and Technology BULLETIN OF THE MARINE GEOLOGY Buletin Sumber Daya Geologi Jurnal Geosains dan Teknologi Jurnal Geologi Kelautan: Media Hasil Penelitian Geologi Kelautan KURVATEK Academia Praja : Jurnal Ilmu Politik, Pemerintahan dan Administrasi Publik Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Indonesian Journal on Geoscience Indonesian Journal on Geoscience Journal of Applied Sciences, Management and Engineering Technology (JASMET) Berita Sedimentologi Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Jurnal Teknologi Mineral dan Batubara Journal of Geosciences and Applied Geology
Budi Muljana
Fakultas Teknik Geologi, Universitas Padjadjaran
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PB RATIO ANALYSIS OF FORAMINIFERA TO OBSERVE PALEOCEANOGRAPHIC CHANGES DURING HOLOCENE IN ARAFURA SEA Swasty Aninda Piranti; Luli Gustiantini; Shaska R. Zulivandama; Catur Purwanto; Lia Jurnaliah; Budi Muljana; Rina Zuraida; Sangmin Hyun
BULLETIN OF THE MARINE GEOLOGY Vol 37, No 1 (2022)
Publisher : Marine Geological Institute of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/bomg.37.1.2022.771

Abstract

Arafura Sea is influenced by several climatic dynamics, it is also a part of the coral triangle that provides most of marine organism diversity of the world. Therefore, this area is an important  waters that impact the climatic dynamic so its paleoceanographic changes need to be understood. For that, we analyzed the foraminiferal PB ratio from marine sediment core ARAFURA-24 with a core length of 179 cm, collected from 47.4 m water depth, combined with that of Aru-07, taken from 276 m water depth (core length 152 cm). Both sediment cores were collected from the Arafura Sea using a gravity corer on board Geomarin III. ARAFURA-24 was sub-sampling in every 20 cm interval, while Aru-07 had been prepared in every 10 cm interval. PB Ratio values from ARAFURA-24 and Aru-07 ranged from 0,56% - 7,43% and from 29,89% to 82,66%, respectively. The age model was reconstructed by 14C radiocarbon dating derived from organic sediment, combined with tie points of PB ratio records. The result indicates that ARAFURA-24 has been sedimented since the last 9.7 kyr BP. PB ratio records reveal three maximum sea level rises, which are before 7.4 kyr BP, at 5.86 kyr, and after 3 kyr BP (approximately at 2 kyr BP at Aru-07). From the age model reconstruction, sedimentation during the last 3 kyr BP was relatively slower than that in the older period. It can be concluded that the foraminiferal PB ratio during Late Holocene was not significantly impacted by sedimentation rate (hence detrital influence), in contrast, during Mid-Holocene detrital influence had more impact on the PB ratio record.
Short Note: Mineral Composition of Eocene and Miocene Sandstones in Java Island Herman Darman; Budi Muljana; J. T. van Gorsel
Berita Sedimentologi Vol 26, No 1 (2013)
Publisher : Ikatan Ahli Geologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1404.733 KB) | DOI: 10.51835/bsed.2013.26.1.167

Abstract

A number of studies discuss the mineral compositions of Cenozoic sandstones in Java Island, Some sandstones are dominated by quartz, derived from granitic and/or metamorphic basement terrains or reworked sediments; many others are dominated by lithics and plagioclase feldspars derived from andesitic volcanics. The distribution of these two end-members varies through space and time, and has not been systematically been document for all of Java.The purpose of this short note is to contribute to the subject of Java sandstone provenance by summarizing quantitative analyses on sandstone compositions in the recent studies by Muljana and Watanabe (2012), Darman (1991), Siemers et al (1992) and Smyth et al (2008) and provide some additional data points as QFL (Quartz- Feldspar- Lithics) ternary plots.
Middle Eocene Nannofossil Assemblages Responding to Depositional Dynamics of the Elat Formation, Maluku Ratih C. F. Ratumanan; Vijaya Isnaniawardhani; Budi Muljana
JURNAL GEOCELEBES Vol. 7 No. 2: October 2023
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v7i2.25371

Abstract

The Kei Besar Island is mainly composed of the Elat Formation carbonate rocks. This research was conducted to determine the nannofossils assemblages in the Elat Formation to interpret the depositional dynamics during its formation. Lithological observations and sampling for nannofossil analysis were carried out on three measured stratigraphic sections: Section 1 - Hollat, Section 2 - Ngurdu, and Section 3 - Mata Hollat. A total of 47 species assigned to 25 genera of nannofossils were identified in 45 selected samples. The succession of the Elat Formation in the study area formed at NP16 to N17 or Middle Eocene. Stratigraphic reconstruction supported by biostratigraphy analysis shows that Section 3 at the lower (NP16 to NP 17), Section 2 in the middle part (NP 17), and Section 1 at the upper (NP 17). R-mode cluster analysis of nannofossils defined four species clusters (assemblies A, B, C and D) that tend to occur together. Q-mode cluster analysis defined five depth-distribution clusters (1, 2, 3, 4, and 5), each deposited under similar conditions. Based on large foraminifera, the succession was formed in fore reef setting in neritic bathymetric zone. Coarsening and thickening upward supported by the nannofossil assemblages indicate depositional dynamics which tend to be shallower. Reworked fossils, commonly found at the lower of the Elat Formation, show the mechanism of turbid currents in early deposition.
Perubahan Iklim Danau Bandung Purba Berdasarkan Analisis Palinologi, Daerah Cihideung, Lembang, Jawa Barat Rizki Satria Rachman; Winantris Winantris; Budi Muljana; Nana Sulaksana
Jurnal Geologi dan Sumberdaya Mineral Vol. 21 No. 1 (2020): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v21i1.404

Abstract

IClimate is the prevailing weather condition of an area throughout the year. Climate affects the vegetation in a region. The research aimed to study the climate and humidity change during the Holocene in Bandung Paleo-Lake based on palynomorph analysis. The twenty-four samples were taken using hand drill in 172.5 - 52.5 cm depth, continued with preparation and determination. In this study, descriptive analysis and comparison between pollen, spores and their sediments to show the climate and humidity change in Bandung Paleo-Lake. The results show that the samples which were taken on peat deposits showing four times climate changes in five zones, which characterized by montane forest pollens, i.e. Podocarpaceae and Pinaceae, lowland forest pollen i.e. Commelinaceae, Moraceae, spores from the Family Polypodiaceae, Pteridaceae and Dennstaedtiaceae, and Gramineae at the study area.Keywords: Climate, palaeo, analysis, palinology, Bandung Lake.
Depositional Environment of Deep-Water Fan Facies: A Case Study of the Middle Miocene Interval at the Kutei and North Makassar Basins Kuntadi Nugrahanto; Ildrem Syafri; Budi Muljana
Jurnal Geologi dan Sumberdaya Mineral Vol. 22 No. 1 (2021): JURNAL GEOLOGI DAN SUMBERDAYA MINERAL
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v22i1.574

Abstract

Massive exploration effort in the study area was conducted in 1996-2014 when deep-water drilling campaign found significant oil and gas discoveries but yet to optimally reach the middle Miocene deep-water sandstone reservoirs. Outcrops, well bores and 2D-seismic data had been incorporated in this study. Datum age from several taxon indicators have been utilized to correlate and unify various markers across the study area into four key biostratigraphy markers: M40, M45, M50, and M65. These four markers are at that point tied to the 2D seismic data in the act of the main horizons in conducting the seismic stratigraphy analysis over the study area not reached by wells. Identifying candidate of sub-regional sequence boundaries onshore and offshore that correspond with relative sea-level drops are the main result of this study. These results were integrated to generate the deep-water fan facies of the middle Miocene's gross depositional environment (GDE) maps, which generally show prograding succession easterly in the various shelf-breaks shifting laterally. The angle of slope and the horizontal length of the shelf-to-slope breaks significantly change from the Middle to Late Miocene until Recent time.Keywords: GDE, deep-water fan, Middle Miocene, Kutei, North Makassar.
Paleogene Deposits Distribution of the Kampar Block, Central Sumatra Basin Fikri Muhammad Fiqih; Abdurrokhim; Budi Muljana
Jurnal Geologi dan Sumberdaya Mineral Vol. 25 No. 1 (2024): JURNAL GEOLOGI DAN SUMBERDAYA MINERAL
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v25i1.809

Abstract

As the most prolific basin, Central Sumatra Basin is a very mature basin for hydrocarbon exploration. Most of the productive reservoir came from Neogen deposits therefore the stratigraphic reconstruction for depositional environment distribution focused on this deposits. Meanwhile the Paleogene deposits distribution and gross depositional environment (GDE) has not been explore further especially on the southern part on the basin. Paleogen deposits like Kelesa Formation is a syn rift deposition which was deposited in the center of the basin. The lithofacies development of the Kelesa Formation consist of 3 major lithofacies associations: (1) thick-bedded mudstone, (2) Interbedded sandstone and conglomerate, (3) Interbedded sandstones and mudstones. The thick-bedded mudstone is deposited in deep lake setting; interbedded sandstone and conglomerate is interpreted as alluvial fan deposit and interbedded sandstones and mudstones as a fluvial channel. GDE map of Kelesa Formation indicate that sandstones facies developed in fluvial and alluvial fan setting near the basin boundary consider as a potential for future hydrocarbon exploration. Keywords: Kelesa Formation; lithofacies; gross depositional environment; Paleogene deposits
A Combination of Embedded Markov Chain and Binomial Probability As A Tool in Sedimentary Facies Analysis Djadjang Jedi Setiadi; Iyan Haryanto; Budi Muljana; Syaiful Alam
Indonesian Journal on Geoscience Vol. 9 No. 3 (2022)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.9.3.291-302

Abstract

DOI:10.17014/ijog.9.3.291-302The methodology of facies analysis may include statistical examination to establish a local facies model. Without such examination, it is very difficult to predict the facies succession and to interpret the changes in depositional conditions from thick or complex stratigraphic sections. Based on the survey of sedimentary geologic literature in Indonesia, it is suggested that the aforementioned statistical method has relatively seldom been used in Indonesia. Such a situation may reflect a gap in information on the methodology and, accordingly, it seems imperative that there should be a re-exposition of the method. This paper presents a concise exposition of the combination of the embedded Markov Chain and binomial probability as one of the most successful statistical methods which are used in facies analysis. The results of previous studies of The Citalang Formation are used as a case study to illustrate its applications to the real geologic world.
POTENSI BATUBARA UNTUK PENGEMBANGAN GASIFIKASI BAWAH PERMUKAAN : STUDI KASUS DESA MACANG SAKTI, PROVINSI SUMATERA SELATAN Asep Bahtiar Purnama; Yudha S. Subarna; Yoga A. Sendjadja; Budi Muljana; Binarko Santoso
Jurnal Teknologi Mineral dan Batubara Vol 13 No 1 (2017): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2017
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol13.No1.2017.156

Abstract

Batubara yang cocok untuk kegiatan gasifikasi bawah permukaan harus memenuhi persyaratan, antara lain kondisi geologis, ketebalan, kedalaman, kadar air total dan kadar abu. Berdasarkan persyaratan ini, tidak semua batubara dalam bisa dimanfaatkan untuk kegiatan gasifikasi bawah permukaan. Kegiatan eksplorasi batubara perlu dilakukan untuk meminimalisasi risiko geologis dan untuk mengetahui kondisi batubaranya. Berdasarkan hasil permodelan, ditemukan lapisan batubara D dengan kriteria kedalaman 200-300 m, ketebalan >5 m, kadar total air lembab+kadar abu <60%, nilai kalor 4.912-6.275 kkal/kg, reflektansi vitrinit 0,23-0,44 (lignit-subbituminus). Perhitungan sumber daya batubara dengan menggunakan software yang ada dan mengacu pada aturan SNI 5015-2011, menghasilkan sumberdaya tereka 3.316.578 ton, tertunjuk 1.909.560 ton dan terukur 2.479.951 ton. 
PENENTUAN LINGKUNGAN PENGENDAPAN LAPISAN BATUBARA D, FORMASI MUARA ENIM, BLOK SUBAN BURUNG, CEKUNGAN SUMATERA SELATAN Asep Bahtiar Purnama; Silti Salinita; Sudirman Sudirman; Yoga Andriana Sendjaja; Budi Muljana
Jurnal Teknologi Mineral dan Batubara Vol 14 No 1 (2018): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2018
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol14.No1.2018.182

Abstract

Lapisan batubara D termasuk ke dalam Blok Suban Burung, Formasi Muara Enim, Subcekungan Palembang Tengah, Cekungan Sumatera Selatan, berumur Miosen Tengah sampai Miosen Akhir. Penelitian ini bertujuan untuk mengetahui karakteristik batubara dan lingkungan terhadap percontoh Lapisan Batubara D dari kegiatan pengeboran penelitian gasifikasi bawah permukaan. Metode yang digunakan adalah analisis petrografi batubara, nilai reflektansi vitrinit, dan interpretasi lingkungan pengendapan berdasarkan diagram Diessel dan diagram Calder. Lapisan batubara ini didominasi oleh vitrinit, rata-rata sekitar 71,1%, diikuti inertinit 17,6%, liptinit 5,9%, dan mineral 6,4%. Nilai reflektansi vitrinit berkisar antara 0,25-38%, termasuk ke dalam peringkat lignit-subbituminus. Berdasarkan hasil rekonstruksi lingkungan pengendapan menggunakan empat parameter TPI (Tissue Preservation Index), GI (Gelification Index), GWI (Ground Water Index) dan VI (Vegetation Index) dan diplot dalam diagram Diessel dan diagram Calder diketahui bahwa Lapisan Batubara D diendapkan dalam lingkungan pengendapan limnik.
PERKEMBANGAN SANDI STRATIGRAFI INDONESIA: Sandi Stratigrafi Indonesia 1973-1996-2023 Muljana, Budi
Bulletin of Scientific Contribution Vol 22, No 2 (2024): Bulletin of Scientific Contribution:GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v22i2.55891

Abstract

AbstrakRevisi Sandi Stratigrafi Indonesia berkorelasi dengan perkembangan data serta konsep keilmuan khususnya stratigrafi. Seiring juga dengan pola pemikiran dalam memahami serta memberlakukan data-data stratigrafi. Selama perkembangan Sandi Stratigrafi Indonesia 1973 kemudian 1996 dan yang terakhir 2023, telah mengalami banyak sekali perubahan paragdigma konsep stratigrafi. Mulai dari pendekatan deskriftif atau yang sering disebut dengan stratigrafi tradisional ke pendekatan deterministic atau sampai ke prediktif atau sering juga disebut dengan stratigrafi modern. Tulisan ini ingin memberikan informasi bahwa perkembangan Sandi Stratigrafi Indonesia hamper 50 tahun ini. Tujuannya adalah untuk mengakomodir perkembangan data, metode dan konsep stratigrafi.Kata kunci : Sandi Stratigrafi Indonesia, Stratigrafi tradisonal, Stratigrafi modern AbstractStratigraphic Indonesian Codes revision correlate with the development of data and knowledge concept, especially in stratigraphy.  It is related to the point of view within to understand and interpret for all stratigraphic data. During the development of Stratigraphic Indonesian Code starting from 1973, 1996 and the last 2023, has changed the outlook paradigm of stratigraphic concepts. Starting on descriptive approaching point view or it’s called a traditional stratigraphy to deterministic or predictive interpretations or called as a modern stratigraphy.  This paper tries to give brief information about the developments of Stratigraphic Indonesian Codes almost during 50th years. The main point is to be able accommodate the data, methods, and stratigraphic concept development.Keywords: Stratigraphic Indonesian Codes, traditional stratigraphy, modern stratigraphy
Co-Authors Abdurrokhim Abdurrokhim ⠀ Adi Hardiyono, Adi Adjat Sudradjat Adlan, Ryandi Agus Didit Haryanto -, Agus Didit Haryanto Al Suwaidi, Aisha Ali, Mohammed Andi Agus Nur Andi Agus Nur, Andi Agus Andriana S, Yoga Andriana S, Yoga Asep Bahtiar Purnama Asep Bahtiar Purnama Astriandhita, Karina Melias Azmi Baihaqi Baihaqi, Azmi Baihaqi, Azmi Bastira, Shahnaz Noveta Binarko Santoso Budiana, Rahmat Catur Purwanto Catur Purwanto, Catur Dadang Suganda Dadang Suganda Dewandra Bagus Eka Putra Dewandra Bagus Eka Putra, Dewandra Bagus Eka Djadjang Jedi Setiadi Emi Sukiyah Fauziah Hanum Fauziah Hanum Febriwan Mohammad, Febriwan Fercanza, Frisdio Fikri Muhammad Fiqih Hadian, M. Sapari Dwi Hadian, Mohammad Sapari Dwi Hendarmawan Hendarmawan Hendarmawan, Hendarmawan Herman Darman Ildem Syafri Ildrem Sjafri Ildrem Syafri Ildrem Syafri Iyan Haryanto J. T. van Gorsel Karina Melias Astriandhita Kuntadi Nugrahanto Kuntadi Nugrahanto Nugrahanto kurnianto, brany Laranarko, Dwandari Lathifah, Lista Ummu Fadzilatul Lia Jurnaliah LILI FAUZIELLY Lili Fauzielly Luli Gustiantini M. Sapari Dwi Hadian Mohamad Sapari Hadian Morad, Sadoon Mudiarsono Mudiarsono Muhammad Kurniawan Alfadli Muhammad Zulfikar Muslin, Dicky Nana Sulaksana Naufal, Muhammad Audy Nazar Nurdin Noor Cahyo Dwi Aryanto Nuraini , Siti Nurdradjat, . Nurdrajat Nurdrajat Osvaldus, Rodrigo Prahastomi, Mochammad Praptisih Praptisih Praptisih, . Prasetya, Muhammad Nurul Huda Purna Sulastya Putra Purna Sulastya Putra, Purna Sulastya Rahmat Fakhrudin -, Rahmat Fakhrudin Ratih C. F. Ratumanan Reiza D. Dienaputra Reza Muhammad Ganjar Gani, Reza Muhammad Ganjar Rina Zuraida Rita Susilawati Rizki Satria Rachman Rizki Satria Rachman Rudy Suhendar Sangmin Hyun Santosa, Ardian Aby Sayaf, Ival Umar Setiawan, Taat Shahnaz Noveta Bastira Shaska R. Zulivandama Silti Salinita Siti Nuraini Sudirman Sudirman Sudradjat , Adjat Suganda, Wingky Suhendar, Rudy Susilawati, Rita Susilawati, Rita Swasty Aninda Piranti Syaiful Alam Syaiful Alam Taat Setiawan Teddy Tresnanto Tresnanto, Teddy Tresnanto, Teddy Undang Mardiana Vijaya Isnaniawardhani Wahyu Sugiarto Winantris Winantris Winantris Winantris Yan Rizal, Yan Yoga A. Sendjadja Yoga Andriana S Yoga Andriana Sendjaja Yudha S. Subarna Yuspian Djapani Yuyun Yuniardi Yuyun Yuniardi -, Yuyun Yuniardi