Detailed Lithofacies and Architectural Facies Analyses on Mixed Carbonate-Siliciclastic Clastic Shoreline Depositional Environment of the Cibulakan Formation in Cipamingkis River, Jonggol, Bogor, West Java

2021 ◽  
Author(s):  
E. Edwin
Keyword(s):  
Spatial Variation ◽  
Depositional Environment ◽  
Field Observations ◽  
West Java ◽  
Thin Sections ◽  
Fragment Type ◽  
Interesting Study ◽  
Facies Modelling ◽  
Depositional Setting ◽  
Mixed Carbonate

Cibulakan Formation as one of the prolific hydrocarbon-bearing intervals has become an interesting study object for many researchers. The continuous outcrop of the Cibulakan Formation in the Cipamingkis River comprises claystone, sandstone, and subordinate limestone of grainstone, packstone, and wackestone facies. The outcrop should be able to give a clearer vertical and spatial variation of sandstone and limestone geometry compared to the conventional core alone. Field observations followed by measuring the section is conducted to distinguish lithofacies and to create a stratigraphic profile from the chosen interval. Samples and thin sections from sandstone and limestone lithofacies are observed further to determine fragment type variation, matrix, cement, texture, and porosity types qualitatively. Fourteen (14) lithofacies have been recognized from the observation, i.e., Slumped Sandstone (A1), Claystone (A2), Slightly-bioturbated Sandstone (B1), Cross-laminated Sandstone (B2), Parallel-laminated Siltstone (B3), Calcareous Claystone (B4), Moderately-bioturbated Sandstone (C1), Hummocky Cross-stratified Sandstone (C2), Skeletal – Coral clast Wackestone (C3), Skeletal-clast Packstone (C4), Coralline Foraminiferal Boundstone (C5), Low-angle Planar Cross-bedded Sandstone (D1), Intensely-bioturbated Sandstone (D2), and Trough Cross-bedded Sandstone (D3). There are four architectural facies in the research interval and each of them is composed of different and specific lithofacies. An ideal parasequence is composed of all Architectural Facies namely : (A) Offshore-Transition (B) Lower Shoreface (C) Upper Shoreface with the whole thickness range between 15 to 25 m and the parasequence shows thickening upward succession. The detailed information about the lithofacies and architectural facies hopefully will provide a better understanding of the facies modelling of the mixed carbonate-siliciclastic depositional setting, new insights for parasequence recognition in clastic shoreline depositional environment and become a reference for other areas lacking in core data and/or outcrop analogue.

Crinoids from the Muldraugh Member of the Borden Formation in north-central Kentucky (Echinodermata, Lower Mississippian)

2000 ◽  
Vol 74 (6) ◽  
pp. 1072-1082 ◽  
Author(s):  
William I. Ausich ◽  
Alan Goldstein ◽  
Ron Yates
Keyword(s):  
United States ◽  
New Species ◽  
Rank Order ◽  
Species Abundance ◽  
North Central ◽  
First Report ◽  
Eastern Side ◽  
Borden Formation ◽  
Depositional Setting ◽  
Mixed Carbonate

A new late Osagean (Lower Mississippian) crinoid fauna is described from the Muldraugh Member of the Borden Formation of central Kentucky. The Muldraugh Member records a mixed carbonate-siliciclastic tempestite-dominated ramp environment. This is the first report of late Osagean crinoids from this depositional setting on the eastern side of the Eastern Interior Basin of the midcontinental United States. The Muldraugh crinoid fauna contains 66 species and is dominated by advanced cladids. This fauna has similarities to other late Osagean faunas but is distinctive both in species abundance and rank order abundance of species. Eight new species are described from this fauna, includingCamptocrinus nudus, Paradichocrinus ramus, Poteriocrinites horowitzi, Parascytalocrinus pentagonus, Abrotocrinus debrae, Abrotocrinus springeri, Worthenocrinus hardinensis, andMespilocrinus myllos.

scholarly journals Age and Depositional Environment of Walat Formation Based on Palynological Analysis in Sukabumi Regency, West Java, Indonesia

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Rizki Satria Rachman ◽  
Winantris ◽  
Budi Muljana
Keyword(s):  
Data Analysis ◽  
Chemical Treatment ◽  
Depositional Environment ◽  
Treatment Method ◽  
Late Eocene ◽  
West Java ◽  
Palynological Analysis ◽  
First Occurrence ◽  
Pollen And Spores

AbstractWalat Formation is equivalent to Bayah Formation. This formation is the beginning of Bogor basin deposition. In this case, age and environment of this formation have been analyzed by previous researchers, but the results of age and environment interpretations have different ranges, especially from its palynological aspect which until now Walat Formation is rarely analyzed using this aspect. This research was conducted to identify the age and depositional environment of Walat Formation in Sukabumi region by using pollen and spores to confirm different interpretations of previous studies. Measure section was carried out in sampling and chemical treatment method was carried out to see palynomorph content in the rock. Furthermore, data analysis was carried out with range of interval zones and pollen grouping based on their environment.The results show that Walat Formation has Late Eocene age based on the interval zone between first occurrence of Verrucatosporites usmensis and Meyeripollis naharkotensis, and the last occurence of Proxapertites operculatus, Proxapertites cursus, and Cicatricosisporites eocenicus. Walat Formation has fluvial depositional environment characterized by the dominance of Proxapertites operculatus and Proxapertites cursus. The results of this study confirm that the Walat Formation has an Eocene age and a fluvial depositional environment from a palinological aspect.

scholarly journals Stratigraphy and Depositional Environment of Mauddud Formation in Ratawi Oil wells of Southern Iraq

2021 ◽  
Vol 877 (1) ◽  
pp. 012030
Author(s):  
Maha Razaq Manhi ◽  
Hamid Ali Ahmed Alsultani
Keyword(s):  
Deep Sea ◽  
Lower Cretaceous ◽  
Depositional Environment ◽  
Carbonate Platform ◽  
Depositional Environments ◽  
Oil Wells ◽  
Oil Field ◽  
Microfacies Analysis ◽  
Thin Sections ◽  
Southern Iraq

Abstract The Mauddud Formation is Iraq’s most significant and widely distributed Lower Cretaceous formation. This Formation has been investigated at a well-23 and a well-6 within Ratawi oil field southern Iraq. In this work, 75 thin sections were produced and examined. The Mauddud Formation was deposited in a variety of environments within the carbonate platform. According to microfacies analysis studying of the Mauddud Formation contains of twelve microfacies, this microfacies Mudstone to wackestone microfacies, bioclastic mudstone to wackestone microfacies, Miliolids wackestone microfacies,Orbitolina wackestone microfacies, Bioclastic wackestone microfacies, Orbitolina packstone microfacies, Peloidal packstone microfacies, Bioclastic packstone microfacies, Peloidal to Bioclastic packstone microfacies, Bioclastic grainstone microfacies, Peloidal grainstone microfacies, Rudstone microfacies. Deep sea, Shallow open marine, Restricted, Rudist Biostrome, Mid – Ramp, and Shoals are the six depositional environments in the Mauddud Formation based on these microfacies.

scholarly journals "Mineralogical & Petrographic Microfacies Study of the Zahraa formation (Pliocene– Pleistocene) in Sawa Lake Surrounding area- IRAQ "

2017 ◽  
Vol 4 (1) ◽  
pp. 11-20
Author(s):  
Saleh A. Lazam
Keyword(s):  
Organic Matter ◽  
Fresh Water ◽  
Depositional Environment ◽  
Water Environment ◽  
Lake Area ◽  
Surrounding Area ◽  
Thin Sections ◽  
Project Area ◽  
Mineralogical Study ◽  
Fresh Water Environment

"Mineralogical, Petorographic Microfacies study has been done on (16) samples of Zahraa formation (Pliocene – Pleistocene) of outcrop in Surrounded Sawa Lake area. The mineralogical study showed that Calcite is the main mineral within the rock formation, whereas the upper rocks of Zahraa Formation consist silty or sandy claystone is dominant in the middle and the upper portion, in addition to quartz, clay minerals, iron oxide and organic matter as insoluble residues. From thin sections study, Three main microfacies have been identified which are: Charophyte shelly bioclastic wackestone, Charophyte shelly bioclastic dolowackestone and Algal wackestone. Based on microfacies study and its fossils content, it has been possible to determine the depositional environment of Zahraa Formation which deposits in the area of the presence of Charaphytes, indicates fresh water environment. From the depositioal situation and the large extension in the project area, the type of fresh water environment is ephemeral freshen water lakes."

scholarly journals Ceramic Micropalaeontology

2016 ◽  
pp. 265-287
Author(s):  
Ian Wilkinson ◽  
Patrick Quinn ◽  
Mark Williams ◽  
Jeremy Taylor ◽  
Ian Whitbread
Keyword(s):  
Organic Compounds ◽  
Depositional Environment ◽  
Local Environment ◽  
Integrated Analysis ◽  
Thin Sections ◽  
Archaeological Ceramics ◽  
Construction Methods ◽  
Individual Grains ◽  
Transportation Routes ◽  
Source Materials

Microfossils found in archaeological ceramics include representatives of kingdoms Fungi, Protista, Plantae, and Animalia and are composed of calcite, silica, or resistant organic compounds capable of withstanding firing. Methods by which microfossils are isolated for study vary considerably, but the best results involve the disaggregation of potsherds into their individual grains or by cutting petrological thin sections. Microfossils can be related directly to the age and depositional environment of the source materials (clays, temper, and slip) used in the manufacturing process, although the introduction of contaminants at the time of construction must also be recognized. When incorporated into an integrated analysis, the microfossils may demonstrate provenance; contribute to a better understanding of the local environment and landscape; identify transportation routes; contribute to an understanding of the technology used, including construction methods and firing; and elucidate the use to which the vessels were put.

Reservoir Quality of the Miocene Formation Gas Deposits, Onshore Abu Dhabi

2021 ◽  
Author(s):  
Catherine Breislin ◽  
Laura Galluccio ◽  
Kate Al Tameemi ◽  
Riaz Khan ◽  
Atef Abdelaal
Keyword(s):  
Depositional Environment ◽  
Middle Miocene ◽  
Quality Analysis ◽  
Reservoir Quality ◽  
Carbonate Facies ◽  
Pore System ◽  
Thin Sections ◽  
Reservoir Architecture ◽  
Porosity And Permeability ◽  
Permeability Anisotropy

Abstract Understanding reservoir architecture is key to comprehend the distribution of reservoir quality when evaluating a field's prospectivity. Renewed interest in the tight, gas-rich Middle Miocene anhydrite intervals (Anh-1, Anh-2, Anh-3, Anh-4 and Anh-6) by ADNOC has given new impetus to improving its reservoir characterisation. In this context, this study provides valuable new insights in geological knowledge at the field scale within a formation with limited existing studies. From a sedimentological point of view, the anhydrite layers of the Miocene Formation, Anh-1, Anh-2, Anh-3, Anh-4 and Anh-6 (which comprise three stacked sequences: Bur1, Bur2 and Bur3; Hardenbol et al., 1998), have comparable depositional organisation throughout the study area. Bur1 and Bur2 are characterised by an upward transition from intertidal-dominated deposits to low-energy inner ramp-dominated sedimentation displaying reasonably consistent thickness across the area. Bur3 deposits imply an initial upward deepening from an argillaceous intertidal-dominated to an argillaceous subtidal-dominated setting, followed by an upward shallowing into intertidal and supratidal sabkha-dominated environments. This Bur3 cycle thickens towards the south-east due to a possible deepening, resulting in the subtle increase in thickness of the subtidal and intertidal deposits occurring around the maximum-flooding surface. The interbedded relationship between the thin limestone and anhydrite layers within the intertidal and proximal inner ramp deposits impart strong permeability anisotropy, with the anhydrite acting as significant baffles to vertical fluid flow. A qualitative reservoir quality analysis, combining core sedimentology data from 10 wells, 331 CCA data points, 58 thin-sections and 10 SEM samples has identified that reservoir layers Anh-4 and Anh-6 contain the best porosity and permeability values, with the carbonate facies of the argillaceous-prone intertidal and distal inner ramp deposits hosting the best reservoir potential. Within these facies, the pore systems within the carbonate facies are impacted by varying degrees of dolomitisation and dissolution which enhance the pore system, and cementation (anhydrite and calcite), which degrade the pore system. The combination of these diagenetic phases results in the wide spread of porosity and permeability data observed. The integration of both the sedimentological features and diagenetic overprint of the Middle Miocene anhydrite intervals shows the fundamental role played by the depositional environment in its reservoir architecture. This study has revealed the carbonate-dominated depositional environment groups within the anhydrite stratigraphic layers likely host both the best storage capacity and flow potential. Within these carbonate-dominated layers, the thicker, homogenous carbonate deposits would be more conducive to vertical and lateral flow than thinner interbedded carbonates and anhydrites, which may present as baffles or barriers to vertical flow and create significant permeability anisotropy.

Global carbon isotope signal in the Middle Triassic on Svalbard

2021 ◽  
Author(s):  
Victoria S. Engelschiøn ◽  
Øyvind Hammer ◽  
Fredrik Wesenlund ◽  
Jørn H. Hurum ◽  
Atle Mørk
Keyword(s):  
Carbon Isotope ◽  
Depositional Environment ◽  
Middle Triassic ◽  
Barents Sea ◽  
Water Productivity ◽  
Sedimentary Environment ◽  
The Arctic ◽  
Late Triassic ◽  
Triassic Boundary ◽  
Thin Sections

<p>Several carbon isotope curves were recently published for the Early and Middle Triassic in Tethys. Recent work has also been done on the Early Triassic of Svalbard, but not yet for the Middle Triassic. This work is the first to measure δ<sup>13</sup>C for different Middle Triassic localities on Svalbard, which was then part of the Boreal Ocean on northern Pangea. Our aim is to understand the controls on the Svalbard carbon isotope curve and to place them in a global setting.</p><p>Correlating Triassic rocks around the world is interesting for several reasons. The Triassic Period was a tumultuous time for life, and the Arctic archipelago of Svalbard has shown to be an important locality to understand the early radiation of marine vertebrates in the Triassic. Much effort is also made to understand the development of the Barents Sea through Svalbard’s geology.</p><p>Carbon isotope curves are controlled by depositional environment and global fluctuations. Global factors such as the carbon cycle control the long-term carbon isotopic compositions, while short-term fluctuations may reflect the origin of organic materials in the sediment (e.g. algal or terrestrial matter), stratification of the water column, and/or surface water productivity. Carbon isotopes can therefore be useful to understand the depositional environment and to correlate time-equivalent rocks globally.</p><p>The dataset was collected through three seasons of fieldwork in Svalbard with localities from the islands Spitsbergen, Edgeøya and Bjørnøya. Detailed stratigraphic sampling has resulted in high-resolution δ<sup>13</sup>C curves. These show three strong transitions; 1) on the boundary between the Early and Middle Triassic, 2) in the middle of the formation and 3) at the Middle and Late Triassic boundary. Several Tethyan localities show a possibly similar Early-Middle Triassic signal. Current work in progress is sedimentological analysis by thin sections and X-ray fluorescence spectroscopy (XRF) to further understand the sedimentary environment.</p>

scholarly journals Petrogenesis and depositional environment of paleozoic Sedili and Pengerang Volcaniclastics in East Johor Basin, Peninsular Malaysia

2019 ◽  
Vol 76 ◽  
pp. 04009
Author(s):  
Sugeng Sapto Surjono ◽  
Mohd. Shafeea Leman ◽  
Che Aziz Ali ◽  
Kamal Roslan Mohamed ◽  
Fathan Hanifi Mada M
Keyword(s):  
Depositional Environment ◽  
Active Continental Margin ◽  
Volcanic Rocks ◽  
Peninsular Malaysia ◽  
Calc Alkaline ◽  
Great Abundance ◽  
Volcaniclastic Rocks ◽  
Geochemical Analyses ◽  
Depositional Setting ◽  
Magma Series

Volcaniclastic rocks in East Johor Basin are found in a relatively great abundance comprising Sedili and Pengerang Formations excluding the metamorphics, siliciclastics, and granites. Since the volcaniclastic rocks are found in a different formation, this study aims to find out the characteristics of each rock. Geology, petrography, and geochemical analyses were elaborated to reveal the petrogenesis and depositional environment in the studied area on the basis of fieldwork data and 24 samples collected from outcrops. The Sedili and Pengerang Formations are dominated by acidic rocks of rhyolite, rhyodacite, ignimbrite, and lava classifiied into calc-alkaline magma series which indicates a subduction-related product. Moreover, those acidic rocks are grouped into active continental margin. Eventhough volcanic rocks in Sedili and Pengerang Formations exhibit similar characteristics, they are different in several major contents. Therefore, it is inferred that both Sedili and Pengerang Formations were deposited in different phase. Coincidentally, depositional environment of both formations is also distinct. Sedili Formation were deposited in the subaerial to shallow marine, meanwhile, Pengerang Formation is interpreted to be deposited in deeper depositional setting.

scholarly journals Petrography and depositional environment of Permo-Triassic carbonates of Pahalgam Formation, Kashmir Himalaya, India

1998 ◽  
Vol 18 ◽  
Author(s):  
G. M. Zaki
Keyword(s):  
Depositional Environment ◽  
Energy Levels ◽  
Low Energy ◽  
Kashmir Himalaya ◽  
Jammu And Kashmir ◽  
Thin Sections ◽  
Carbonate Sedimentation ◽  
Lime Mud ◽  
Carbonate Deposition ◽  
Textural Parameters

The Permo-Triassic carbonates of the Pahalgam Formation are exposed in the vicinity of the Pahalgam area. The Pahalgam Formation is characterised by fossils like productus, bryozoans, Spirifer Rajah, crinoids and molluscs. The rocks of this formation are represented by white grey muddy limestones followed by grey crinoidal limestones with brachiopods and lamellerbranchs. The rocks extend towards, Chandanwari, Sheshnag, Amamath Cave, Sonamarg and then to the Ladakh region of Jammu and Kashmir State. The outcrops of this formation, extending from the Pahalgam village up to Aru via Mammal village, can be traced along the Lidder River. The formation is equivalent to the well-known Zewan Formation of the Vthi district both in lithology and fossil assemblages. On the basis of lithology, the Pahalgam Formation has been divided into three units i.e. Pahalgam unit, Mammal unit, and Aru unit. Thin sections from each unit of the Pahalgam Formation were prepared for the present study and examined with respect to texture, framework grains, cementation and palaeo-petrographical criteria. The textural parameters used to indicate different energy levels in deposition of these carbonates were the attrition of the bivalve fossils (brachiopods and pelecypods) and the context of the sparite cement. The Pahalgam Formation is of platform type on which carbonate sedimentation took place during the Permo-Triassic times. It is a type of lime mud cycle with essentially low energy carbonate deposition, representing restricted open marine environment.

scholarly journals STATUS KEBERLANJUTAN INTRODUKSI TEKNOLOGI KELAUTAN DAN PERIKANAN DI KABUPATEN INDRAMAYU

2017 ◽  
Vol 6 (1) ◽  
pp. 37
Author(s):  
Tikkyrino Kurniawan ◽  
Mei Dwi Erlina
Keyword(s):  
Analytical Methods ◽  
Quantitative Methods ◽  
Field Observations ◽  
West Java ◽  
Fisheries Science ◽  
Processing Activity ◽  
Structured Questionnaire

Banyak teknologi yang telah diintroduksikan oleh KIMBis Indramayu dari tahun 2011 hingga 2014. Tapi tidak semua teknologi tersebut diadaptasikan oleh stakeholder. Tujuan penelitian ini adalah untuk melihat seberapa banyak teknologi yang telah diaplikasikan oleh stakeholder dan apa saja kendala-kendalanya. Kegiatan ini dilaksanakan mulai bulan Januari – Desember 2015. Lokasi PEK SIS TAL Indramayu di Kabupaten Indramayu, Provinsi Jawa Barat. Teknik pengumpulan data dilakukan dengan FGD, observasi, pengamtatan di lapangan dan wawancara dengan menggunakan kuesioner terstruktur, studi literatur dan dokumentasi yang terkait. Metode analisa PEK SIS TAL selain menggunakan analisis deskriptif, juga menggunakan analisis kuantitatif. Kesimpulan penelitian ini adalah Hasil FGD menunjukkan bahwa secara keseluruhan dapat dikatakan bahwa, teknologi yang diintroduksikan sudah sesuai dengan kebutuhan masyarakat dan sederhana sehingga seharusnya sudah diterapkan oleh stakeholder dimasyarakat. Teknologi yang paling banyak diadopsi adalah pada sektor budidaya (37%), tambak garam (25%) dan nelayan (25%). Teknologi yang berhasil diintroduksikan adalah teknologi budidaya terutama pada budidaya air payau. Implikasi kebijakan yang dapat disarankan adalah harus dibuat persyarakat standar SDM yang dapat menerima teknologi atau melakukan pengkategorian penerima teknologi (adopter), sehingga penerapan teknologi dapat diterapkan secara maksimal. Selain standar kemampuan, pemilihan penerima teknologi juga harus melihat kemauan dan pengalaman usaha. Hal ini harus diseleksi dengan baik agar teknologi dapat diadopsi dan diterapkan oleh masyarakat untuk meningkatkan kesejahteraanya serta yang telah mendapatan introduksi teknologi dapat menjadi Trainer of Trainer (TOT) sehingga teknologi yang telah diintroduksikan dapat disebar luaskan oleh mereka. Title: The Effectiveness on Introductions on Marine And Fisheries Technology on Indramayu’s Fisheries Science and Business Clinical (KIMBis) LocationMarine technology and fisheries have been introduced by KIMBis Indramayu from 2011 to 2014. While not all of these technologies adopted by the Community users. The aims of this study are (1) to analyze the sustainability of marine and fisheries technology that were introduced in Indramayu District and (2) to analyze the effectiveness of marine and fisheries technology in Indramayu District. This study was conducted from January to Desember 2015 in Indramayu District, West Java Province. The data were collected by FGD, field observations and interviews using a structured questionnaire, literature, and related documentations. The analytical methods are using both descriptive and quantitative methods. The fisheries business activities have utilized and implemented technology such as aquaculture (37%), salt farming (25%), and capture fisheries (25%), while the least using technology are fisheries product processing activity (13%). Most of them have already adopted by the community, even more there are technologies that have undergone diffusion the marine and fisheries technology in Indramayu are effective. 

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