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All Journal METAMORFOSA Journal of Biological Sciences Bionatura Bulletin of Scientific Contribution : Geology Indonesian Journal of Applied Sciences AL KAUNIYAH IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Geoscience Journal Jurnal Geocelebes Journal of Geoscience, Engineering, Environment, and Technology Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) BULLETIN OF THE MARINE GEOLOGY Jurnal Geosains dan Teknologi Jambura Geoscience Review Indonesian Journal on Geoscience Indonesian Journal on Geoscience Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Journal of Geosciences and Applied Geology
Winantris Winantris
Fakultas Teknik Geologi, Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health

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Umur, Lingkungan Pengendapan, dan Karakteristik Fosil Palinomorf Formasi Batuasih, Sukabumi, Jawa Barat Rizki Satria Rachman; Winantris Winantris; Budi Muljana
Metamorfosa: Journal of Biological Sciences Vol 8 No 2 (2021)
Publisher : Prodi Magister Ilmu Biologi, Fakultas MIPA, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/metamorfosa.2021.v08.i02.p04

Abstract

Palynomorph is a dust-sized material that is resistant to strong acids which can reflect the age and environmental conditions when a rock was formed. Batuasih Formation is one of the oldest rock formations in Bogor Basin which is rarely interpreted, especially from its palynological aspect. This study aims to see palynomorph characteristics, relative age, and environmental conditions in Batuasih Formation. There are several steps in conducting the research. Field activities by measured stratigraphic sections and sampling every 5-meter intervals or each lithological changes, laboratory activities by sample preparation using acid treatment method, identification were carried out using CX-22 binocular microscope, and laboratory analysis of age and depositional environment is drawn based on palynomorph associations that are present in rocks. The result found that palynomorphs were present in 8 of 10 samples (B.1, B.2, B.4, B.6 - B.10). One hundred seventy-three palynomorphs identified to consist of 20 different species. Dominant pollen came from genus Proxapertites, both Proxapertites operculatus, Proxapertites cursus, and Proxapertites psilatus. While dominant spores came from Verrucatosporites usmensis. Apart from pollen and spores, Palynomorphs in the form of dinoflagellates and foraminifera test lining are also present in this formation. Palynomorph analysis shows that Batuasih Formation has Late Eocene - Early Oligocene age (41.2 - 27.8 Ma) with transitional depositional environment.
Eo-Oligocene Oil Shales of the Talawi, Lubuktaruk, and Kiliranjao Areas, West Sumatra: Are they potential source rocks? M. Iqbal; Nana Suwarna; Ildrem Syafri; Winantris Winantris
Indonesian Journal on Geoscience Vol 1, No 3 (2014)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2086.854 KB) | DOI: 10.17014/ijog.1.3.135-149

Abstract

DOI:10.17014/ijog.v1i3.198To anticipate the increasing energy demand, additional data and information covering unconventional fossil fuels such as oil shale must be acquired to promote the usage of alternative energy sources to crude oil. The Talawi and Lubuktaruk regions situated within intra-montane Ombilin Basin, and the Kiliranjao assumed to be a small intra montane basin are occupied by Eo-Oligocene sediments of Sangkarewang and Kiliran Formations, respectively. Field activity, geochemical screening techniques, and organic petrographic analysis, supported by SEM mode, are methods used. Most of the oil shale sequence is typically of an organically rich-succession comprising predominantly well-bedded, laminated and fissile, brownish to dark grey organic-rich shale and mudstone rocks. The exinite macerals within oil shale comprise mainly Pediastrum-lamalginite with minor cutinite, resinite, liptodetrinite, sporinite, bituminite, and rare Botryococcus-telalginite. Therefore; the oil shale deposits can be described as “lamosites”. Minor vitrinite maceral is also recognized. TOC analysis on selected shale samples corresponds to a fair up to excellent category of source rock characterization. The hydrogen index (HI) for all samples shows a range of values from 207 - 864, and pyrolysis yield (PY) ranges from 2.67 to 79.72 mg HC/g rock. The kerogen is suggested to be of mixed Type II and Type I autochthonous materials such as alginite, with minor allochthonous substances. Oil samples collected appear to be positioned within more oil prone rather than gas prone. Thermal maturity of the oil shales gained from Tmax value and production index (PI) tends to show immature to marginally/early mature stage. A consistency in the thermal maturity level results by using both Tmax and vitrinite reflectance value is recognized. On the basis of  SEM analysis, the oil shale has undergone a late eodiagenetic process. Thereby, overall, vitrinite reflectance agreeing with Tmax rates, are also consistent with the PI (production index) values and SEM result. By evaluating all the results of geochemical and organic petrological analyses conducted on shale lithologies (shale and mudstone), it can be concluded that the oil shales in those areas have a favourable potential for generation of shale oil or gas to be included as alternative energy resources in the future.
Identifikasi Lokasi Sebaran Fosil untuk Penentuan Konservasi Situs Paleontologi Bumiayu, Provinsi Jawa Tengah Rahajeng Ayu Permana Sari; Agustina Djafar; Ifan Yoga Pratama Suharyogi; Winantris Winantris; Lili Fauzielly; Erick Setiyabudi
Jurnal Geosains dan Teknologi Vol 5, No 2 (2022): Juli 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jgt.5.2.2022.116-129

Abstract

Bumiayu merupakan daerah yang menarik untuk dikaji dari sisi paleontologi, salah satunya keberadaan Fauna Satir yang merupakan fauna vertebrata tertua di Pulau Jawa. Ada beberapa titik lokasi penemuan yang tersebar di tiga kecamatan, yaitu Desa Bumiayu, Kecamatan Bumiayu; Desa Kutamendala, Kecamatan Tonjong; dan Desa Pengarasan, Kecamatan Bantarkawung. Situs Paleontologi Bumiayu dikenal dengan nama lain Situs Buton (Bumiayu-Tonjong). Metode yang digunakan berupa identifikasi keragaman geologi dan analisis data kualitatif berdasarkan PP No. 26 Tahun 2008. Lokasi yang perlu dikonservasi adalah Sungai Kaliglagah, Sungai Cisaat, Sungai Kalibiuk, Sungai Pelem, Sungai Slatri, Sungai Santanaya, Sungai Cipanglosoran, Sungai Jawan, dan Sungai Bodas karena menceritakan secara runtut pengangkatan Pulau Jawa menjadi daratan selama Plio-Plistosen. Geosite tersebut memiliki keunikan batuan dan fosil yang berfungsi sebagai laboratorium alam, sehingga direkomendasikan untuk dikonservasi sebagai Kawasan Cagar Alam Geologi (KCAG) terutama untuk melindungi dari kerusakan.
Paleoenvironment of the Miocene Lemau Formation Based on the Palynology Analysis in Seluma, Bengkulu Sakilla Gia Mentari; Winantris Winantris; Lia Jurnaliah
Jambura Geoscience Review Vol 5, No 1 (2023): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jgeosrev.v5i1.17150

Abstract

The Lemau Formation is a rock formation that forms the Bengkulu Basin in the Bengkulu Strip. The rocks in this formation contain hydrocarbon reserves in the form of coal. There has yet to be any research on the palynomorphs in the coal-bearing rocks in this formation. Palynomorph analysis was performed on nine samples from the P.T. Bara Indah Lestari, Seluma. The study aims to reconstruct the paleoenvironment and age of the coal-bearing rocks. The sampling technique uses stratigraphic measurements and hydrogen peroxide preparation. There were four changes in the depositional environment, namely the deposition of BIL 10-BIL 11 in the form of a freshwater peat swamp environment and BIL 12 in the form of a mangrove environment in the Early Miocene marked by the presence of Florschuetzia levipoli. The environment changed to a lagoon, indicated by the presence of foraminifera lining test and dinocyst in the deposition of BIL 13-BIL 15 samples in the Middle Miocene with a marked presence of Alnipollenites verus. The environment changed again during the deposition of BIL 16-BIL 18 to become a mangrove environment in the Middle Miocene. Overall, the paleoenvironment of the Lemau Formation is a freshwater peat swamp to a lagoon. Environmental changes are possible due to tectonic activity and climate change.
Age and Depositional Environment of the Sandstone Unit of Ciletuh Formation in Ciletuh-Palabuhanratu Geopark Winantris Winantris; Mega Fatimah Rosana; Katon Sena
Indonesian Journal on Geoscience Vol 10, No 1 (2023)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.10.1.73-82

Abstract

Sandstones form part of the Cenozoic Ciletuh Formation which is widely exposed in The Ciletuh Palabuhanratu Geopark, Indonesia. This study aims to establish the age of these sandstone units, and to evaluate their depositional environment based on palynological data. Five samples from Ciletuh sandstones were collected for palynomorph analysis. Exposed sections were measured and sampled to determine the stratigraphic position, with palynomorphs being separated from the sediment using acetolysis. Cluster analysis was applied to the resultant palynomorph assemblages and interpreted using plant association model, which refered to the depositional environment of different taxa. Two distinct clusters were identified, characterized by different environmental markers. The first cluster is dominated by Proxapertites operculatus and Proxapertites cursus, while the second cluster is dominated by Podocarpus pollen. While the Proxapertites cluster includes Dicolpopollis kalewensis, Palmaepollenites kutchensis, foraminiferal test linings, dinoflagellates cysts, plant debris, deposited in the marine environment. The Podocarpus cluster consists of Podocarpus pollen, plant debris, foraminiferal test linings, and dinoflagellate cysts, that was deposited in a more distal marine environment. All samples were deposited during the end of Middle Eocene (E6-zone), as defined by the age markers of Proxapertites. cursus, P. operculatus, Restioniidites punctulatus, and Podocarpus pollen.
The Significance Relationship between Palynomorph Fossil Preservation and Grain Size in Rock: Case Study of Walat and Batuasih Formations, Sukabumi, West Java Rizki Satria Rachman; Winantris Winantris
JURNAL GEOCELEBES Vol. 7 No. 1: April 2023
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v7i1.22746

Abstract

Palynomorph is dust-sized material that is resistant to acids and can be preserved as fossils in sedimentary rocks. Fossil content in rocks is very diverse which is influenced by various factors, one of this factors is the texture of rock in form of grain size. The Walat and Batuasih Formations are sedimentary rock formations that have variety of grain sizes. This research aims to examine relationship or correlation between grain size and palynomorph preservation in rocks with case studies in the Walat and Batuasih Formations. 42 samples were taken from measured stratigraphic section and analyzed both grain size and palynomorph content. Statistical analysis with Normality Test using Shapiro Wilk and Liliefors; Homogeneity Test using Levene Test; and Non-Parametric Associative Test using Spearman Rank was conducted to see the relationship of these variables. Result, the Walat and Batuasih Formations have conglomerate, sandstone, mudstone and coal lithologies with quite variety of palynomorphs. Statistical results show that all variables have data that are not normally distributed with tendency to be non-homogeneous. Moreover, it was found that the grain size of rock had significant effect on the preservation of palynomorphs in the rock. Clay grains has positive correlation of 0.613 and sand grains has negative correlation of -0.653. This shows that the finer the grain size, the more effective the preservation of palynomorphs is.
Palynostratigraphy Subang, Kaliwangu, And Citalang Formation, From Cikandung River Passage, Sumedang Regency, West Java Rizki Satria Rachman; Winantris Winantris
Jurnal Geosains dan Teknologi Vol 5, No 3 (2022): November 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jgt.5.3.2022.140-150

Abstract

The Subang, Kaliwangu, and Citalang Formation which are important parts of the Bogor Basin have not been studied, especially from the palynostratigraphic aspect. Therefore, this study aims to conduct palynostratigraphic study of these three formations that are well exposed in the Cikandung River area, Sumedang Regency, West Java. Method used in this research is divided into several stages including sampling by spot sampling; preparation of palynomorphs and palynodebris by hydrogen peroxide and acid methods; identification of samples using CX-22 microscope; analysis and interpretation of data using basic research statistics. Result, the research area was divided into three groups. The first group (sample W.9 – W.10) correlates with the Subang Formation which has predominantly claystone lithology with Middle Miocene age and shallow marine environment. This group is in proximal basin position with dysoxic conditions. The second group (sample W.5 – W.8) correlates with the Kaliwangu Formation which has alternating lithology between sandstone and claystone with younger age than the Middle Miocene and transitional environment. This group is in proximal basin position with dysoxic-anoxic conditions. The third group (sample W.1 – W.4) correlates with the Citalang Formation which has sandstone and conglomerate lithology with younger age than the Middle Miocene (Kaliwangu Formation) and terrestrial environment. This group is in proximal basin position and anoxic conditions. In general, when viewed from palynodebris, the presence of plant material (palynomorph, cuticle, and wood) is negatively correlated with AOM and other rock fragments. On the other hand, in terms of palynomorphs, the presence of foraminifera lining test has negative correlation with other terrestrial palynomorphs, especially those of the Florschuetzia species.
Rekonstruksi Vegetasi Pasca Kebakaran Di Blok Gunung Geulis,Suaka Margasatwa Cikepuh Berdasarkan Bukti-Bukti Palinologi Tiffany Hanik Lestari; Winantris Winantris; Parikesit Parikesit
Jurnal Geologi dan Sumberdaya Mineral Vol. 19 No. 2 (2018): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v19i2.271

Abstract

The Gunung Geulis block, Cikepuh Wildlife Nature is one of the natural areas which is considered as the habitat for various wildlife. The area are currently degraded due to the fire. Reconstruction of the vegetation in Gunung Geulis block was conducted as an effort to understand the history of vegetation, so that in the future it can rehabilitate the burnt forest area through reforestation activities in accordance with the initial conditions of the habitat (before burning). This study used a transect method for soil sampling and acetolisys method to know the diversity of the sedimented sub-fossil pollen. Based on the results in the five sampling's points, the 90 types of both sub-fossil pollen and spores of plants (i.e., 34 types of sub-fossil pollens (arboreal pollen), 40 types of sub-fossil pollen (non-arboreal pollen), and 16 species of sub-fossil spores) were observed at five sampling points in Gunung Geulis block. This indicates that the annual fire intensity in the Gunung Geulis block were relatively high. Indeed, the correspoding block is undergoing a secondary succession. The vegetation changes that occur can be illustrated by the diversity of the observed sub-fossil pollen and spores in soil.Keyword : Pollen, Spores, Vegetation Reconstruction, Gunung Geulis, Cikepuh.
Age and Depositional Environment of the Sandstone Unit of Ciletuh Formation in Ciletuh-Palabuhanratu Geopark Winantris Winantris; Mega Fatimah Rosana; Katon Sena
Indonesian Journal on Geoscience Vol. 10 No. 1 (2023)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.10.1.73-82

Abstract

Sandstones form part of the Cenozoic Ciletuh Formation which is widely exposed in The Ciletuh Palabuhanratu Geopark, Indonesia. This study aims to establish the age of these sandstone units, and to evaluate their depositional environment based on palynological data. Five samples from Ciletuh sandstones were collected for palynomorph analysis. Exposed sections were measured and sampled to determine the stratigraphic position, with palynomorphs being separated from the sediment using acetolysis. Cluster analysis was applied to the resultant palynomorph assemblages and interpreted using plant association model, which refered to the depositional environment of different taxa. Two distinct clusters were identified, characterized by different environmental markers. The first cluster is dominated by Proxapertites operculatus and Proxapertites cursus, while the second cluster is dominated by Podocarpus pollen. While the Proxapertites cluster includes Dicolpopollis kalewensis, Palmaepollenites kutchensis, foraminiferal test linings, dinoflagellates cysts, plant debris, deposited in the marine environment. The Podocarpus cluster consists of Podocarpus pollen, plant debris, foraminiferal test linings, and dinoflagellate cysts, that was deposited in a more distal marine environment. All samples were deposited during the end of Middle Eocene (E6-zone), as defined by the age markers of Proxapertites. cursus, P. operculatus, Restioniidites punctulatus, and Podocarpus pollen.
KELIMPAHAN FORAMINIFERA BENTONIK KECIL DAERAH CISANGKAL, KECAMATAN LANGKAPLANCAR, KABUPATEN PANGANDARAN, PROVINSI JAWA BARAT Rumsih, .; Jurnaliah, Lia; Winantris, .
Bulletin of Scientific Contribution Vol 22, No 1 (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.v22i1.50205

Abstract

Daerah penelitian secara administratif berada di Kampung Cisangkal, Desa Bangunkarya,  Kecamatan Langkaplancar, Kabupaten Pangandaran, Jawa Barat. Secara geografis terletak pada koordinat 108°30’41,61’’ BT dan 7°36’17,10’’ LS sampai 108°30’40,48’’ BT dan 7°36’19,78’’. Penelitian ini bertujuan untuk mengetahui kelimpahan foraminifera bentonik kecil di Kampung Cisangkal. Metode yang digunakan dalam penelitian ini meliputi pengambilan data lapangan dengan metode acak pada 2 stasiun, kemudian preparasi foraminifera kecil, dan analisis kuantitatif dengan menghitung setiap individu dan genus dari semua sampel. Sampel yang digunakan sebanyak 9 sampel batuan. Berdasarkan hasil penelitian kelimpahan foraminifera bentonik kecil pada daerah penelitian terdiri dari 1.059 individu foraminifera bentonik kecil dengan 38 genus. Kelimpahan tertinggi berada pada sampel ST2-H1 dengan jumlah 266 individu dan 24 genus. Sedangkan kelimpahan terendah berada pada sampel ST1-H7 dengan jumlah 17 individu dan 5 genus. Adanya perbedaan keragaman genus dan jumlah individu menunjukkan terjadinya perubahan lingkungan. Kata Kunci: Foraminifera bentonik kecil, Cisangkal, Kelimpahan, keragaman.
Co-Authors . Solihin, . ADI, GILANG PERWIRA Agustina Djafar Anita Galih Ringga Jayanti Arya, Pulung P Astriandhita, Karina Melias Aswan Aswan Bani Nugroho, Bani Budi Muljana Danendra, Evan Faiz Ellin Harlia Emi Sukiyah Erick Setiyabudi Fatih, Rayhan Faurine, Nurul Rizma Fauziely, Lili Fitriany, Ria Haitami, Riza Rohmatul Hanifah, Rani Izdihar Helman Hamdani Helman Hamdani, Helman Ifan Yoga Pratama Suharyogi Ildrem Syafri Iqbal, M. ISANJARINI, VISMAIA Karina Melias Astriandhita Katon Sena Lestari, Tiffany Hanik Lia Jurnaliah Lia Jurnaliah Lili Fauzielly Lili Fauzielly Lili Fauzielly M. Iqbal M. Iqbal Mega Fatimah Rosana Mega Fatimah Rosana Nana Suwarna Nana Suwarna Nana Suwarna Nisa, Firda Aulya Nugrahanto, Kuntadi Oktariani, Hanny oktariani, Hanny Pangaribuan, Vallery Theresa Parikesit Parikesit Parikesit Parikesit Praptisih Praptisih Praptisih, . Purna Sulastya Putra Purna Sulastya Putra, Purna Sulastya Rachman, Rizki Satria Rahajeng Ayu Permana Sari Rahajeng Ayu Permana Sari Rahardjo, AT. - Rahmola, Wiryadi Rizkiputra Raihanna Ayu Lestari, Raihanna Ayu Ratih Damayanti Ravandi, Theo Alfredo Ria Fitriani, Ria Rina Nurani, Rina Rizki Satria Rachman Rizki Satria Rachman Rizki Satria Rachman Rizki Satria Rachman Rosana, Mega Fattima Rumsih, . Rusman Rinawan -, Rusman Rinawan Sakilla Gia Mentari Siti Mulia Nurul Aswad, Siti Mulia Nurul Suwarna, Nana Syafri, I - Teti Syahrulyati, Teti Tiffany Hanik Lestari Unggul Prasetyo Wibowo Vijaya Isnaniawardhani Witjahjati, Retno Wiwik Handayani YOGA, KUNCARANINGRAT EDI Yudhicara -, Yudhicara