Garuda - Garba Rujukan Digital

Sedimentation Process of Rambatan Formation in Larangan Brebes, North Serayu Range, Central Java Astuti, Bernadeta Subandini; Isnaniawardhani, Vijaya; Abdurrokhim, Abdurrokhim; Sudradjat, Adjat
Indonesian Journal on Geoscience Vol 6, No 2 (2019)
Publisher : Geological Agency

DOI:10.17014/ijog.6.2.141-151Rambatan Formation in the western part of North Serayu Basin, Brebes, Central Java, comprises generally flysch facies of turbidite sediments deposited in a deep marine environment. This formation is equivalent to Merawu Formation found in the eastern part of the basin and deposited in the environment of tidal flat to subtidal. The turbidite sediments were highly controlled by a rapid downward movement taking place continuously during Early to Late Miocene. The variation of the depositional environment has been the object of this research which aims to understand the sedimentation process of Rambatan Formation in this type locality with a modern turbidite approach. Rambatan Formation was deposited in N13-N19, as a deep marine sediment channel, turbidite, and deep marine tidal zone. The sedimentation was affected by gravity flow and contourite. The sediments on N13-N14 were marked by turbidite sediments until Middle N17. The sediment supply increased on Middle N17, as a sediment filler on a channel marked by contourite mud layer (muddy slump) and debris flow, with sources from the north. The increase of sediment supply was followed by an environmental transformation from a deep marine channel into deep marine tidal area. In N19, the sediments were redeposited as turbidite sediment, starting with debris flow in Middle N18.

Sedimentation Process of Rambatan Formation in Larangan Brebes, North Serayu Range, Central Java Astuti, Bernadeta Subandini; Isnaniawardhani, Vijaya; Abdurrokhim, Abdurrokhim; Sudradjat, Adjat
Indonesian Journal on Geoscience Vol 6, No 2 (2019)
Publisher : Geological Agency

DOI:10.17014/ijog.6.2.141-151Rambatan Formation in the western part of North Serayu Basin, Brebes, Central Java, comprises generally flysch facies of turbidite sediments deposited in a deep marine environment. This formation is equivalent to Merawu Formation found in the eastern part of the basin and deposited in the environment of tidal flat to subtidal. The turbidite sediments were highly controlled by a rapid downward movement taking place continuously during Early to Late Miocene. The variation of the depositional environment has been the object of this research which aims to understand the sedimentation process of Rambatan Formation in this type locality with a modern turbidite approach. Rambatan Formation was deposited in N13-N19, as a deep marine sediment channel, turbidite, and deep marine tidal zone. The sedimentation was affected by gravity flow and contourite. The sediments on N13-N14 were marked by turbidite sediments until Middle N17. The sediment supply increased on Middle N17, as a sediment filler on a channel marked by contourite mud layer (muddy slump) and debris flow, with sources from the north. The increase of sediment supply was followed by an environmental transformation from a deep marine channel into deep marine tidal area. In N19, the sediments were redeposited as turbidite sediment, starting with debris flow in Middle N18.

Sedimentation Process of Rambatan Formation in Larangan Brebes, North Serayu Range, Central Java Astuti, Bernadeta Subandini; Isnaniawardhani, Vijaya; Abdurrokhim, Abdurrokhim; Sudradjat, Adjat
Indonesian Journal on Geoscience Vol 6, No 2 (2019)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.6.2.141-151

DOI:10.17014/ijog.6.2.141-151Rambatan Formation in the western part of North Serayu Basin, Brebes, Central Java, comprises generally flysch facies of turbidite sediments deposited in a deep marine environment. This formation is equivalent to Merawu Formation found in the eastern part of the basin and deposited in the environment of tidal flat to subtidal. The turbidite sediments were highly controlled by a rapid downward movement taking place continuously during Early to Late Miocene. The variation of the depositional environment has been the object of this research which aims to understand the sedimentation process of Rambatan Formation in this type locality with a modern turbidite approach. Rambatan Formation was deposited in N13-N19, as a deep marine sediment channel, turbidite, and deep marine tidal zone. The sedimentation was affected by gravity flow and contourite. The sediments on N13-N14 were marked by turbidite sediments until Middle N17. The sediment supply increased on Middle N17, as a sediment filler on a channel marked by contourite mud layer (muddy slump) and debris flow, with sources from the north. The increase of sediment supply was followed by an environmental transformation from a deep marine channel into deep marine tidal area. In N19, the sediments were redeposited as turbidite sediment, starting with debris flow in Middle N18.

Sedimentation Process of Rambatan Formation in Larangan Brebes, North Serayu Range, Central Java Bernadeta Subandini Astuti; Vijaya Isnaniawardhani; Abdurrokhim Abdurrokhim; Adjat Sudradjat
Indonesian Journal on Geoscience Vol 6, No 2 (2019)
Publisher : Geological Agency

DOI:10.17014/ijog.6.2.141-151Rambatan Formation in the western part of North Serayu Basin, Brebes, Central Java, comprises generally flysch facies of turbidite sediments deposited in a deep marine environment. This formation is equivalent to Merawu Formation found in the eastern part of the basin and deposited in the environment of tidal flat to subtidal. The turbidite sediments were highly controlled by a rapid downward movement taking place continuously during Early to Late Miocene. The variation of the depositional environment has been the object of this research which aims to understand the sedimentation process of Rambatan Formation in this type locality with a modern turbidite approach. Rambatan Formation was deposited in N13-N19, as a deep marine sediment channel, turbidite, and deep marine tidal zone. The sedimentation was affected by gravity flow and contourite. The sediments on N13-N14 were marked by turbidite sediments until Middle N17. The sediment supply increased on Middle N17, as a sediment filler on a channel marked by contourite mud layer (muddy slump) and debris flow, with sources from the north. The increase of sediment supply was followed by an environmental transformation from a deep marine channel into deep marine tidal area. In N19, the sediments were redeposited as turbidite sediment, starting with debris flow in Middle N18.

IDENTIFIKASI PROVENANCE SELAMA MIOSEN TENGAH HINGGA PLIOSEN DICEKUNGAN SERAYU UTARA BAGIAN BARAT DI DAERAH KUNINGAN JAWA BARAT Bernadeta Subandini Astuti
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 2 Februari 2016
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Basinareaof western North Serayuis potentially for hydrocarbon such assource rock, reservoir, cap rock and manife stations of the oil. The basin composed by turbit current sediments during the Middle Mioceneto Pliocene. Petrographic analysis of the mineral quartz, feldspar and lithikh as been done to identify the provenance of rocks potentially hydrocarbon. Turbid currents bringrich sedimentlithic, that indicate origin of themagmatic arc. Lithicis reduced to wards younger and east ward. Reduced lithikindication of declining volcanism. Indications reduced lithikisdeclining volcanism. Rocks of western North Serayu basin, that is origin of this magmaticarcin several places found dead oil and oil see page, especially on the rock that show scoarsening up ward or decreasing the current sea level.

IDENTIFIKASI PROVENANCE SELAMA MIOSEN TENGAH HINGGA PLIOSEN DICEKUNGAN SERAYU UTARA BAGIAN BARAT DI DAERAH KUNINGAN JAWA BARAT Bernadeta Subandini Astuti
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 8 No 2 Februari 2016
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v8i2.161

Basinareaof western North Serayuis potentially for hydrocarbon such assource rock, reservoir, cap rock and manife stations of the oil. The basin composed by turbit current sediments during the Middle Mioceneto Pliocene. Petrographic analysis of the mineral quartz, feldspar and lithikh as been done to identify the provenance of rocks potentially hydrocarbon. Turbid currents bringrich sedimentlithic, that indicate origin of themagmatic arc. Lithicis reduced to wards younger and east ward. Reduced lithikindication of declining volcanism. Indications reduced lithikisdeclining volcanism. Rocks of western North Serayu basin, that is origin of this magmaticarcin several places found dead oil and oil see page, especially on the rock that show scoarsening up ward or decreasing the current sea level.

Perubahan Iklim Formasi Sentolo pada Kala Miosen Awal - Pliosen di Jalur Kali Serang, Nanggulan, Kulon Progo Alansyah, Apriko Yudhan; Nadhip, Muhammad; Erlandi, Muhammad; Kurniawan, Sandi; Rizqi, Al Hussein Flowers; Subandini Astuti, Bernadeta; Supandi, Supandi
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

The research area is included in the Physiography of the Kulon Progo Mountains to the south, in Kali Serang, Kec. Nanggulan, Kulon Progo Regency, Special Region of Yogyakarta. This study aims to determine the pattern of ancient climate change in the middle Sentolo formation, which is used to correlate the ancient climate in the upper Sentolo formation to previous researchers. The results of the field data obtained at the study site were two facies, packstone and grainstone, which are included in the bioclastic limestone unit with a thickness of 30m. Identifying microfossils with samples (top, middle, bottom) obtained several species of benthonic foraminifera fossils totaling 89 and 79 planktonic foraminifera. The results of calculating the relative ages of the Sentolo formation in this study ranged from N13-N14 (middle Miocene). Based on the calculation of the p/b ratio for determining the depositional environment is in the middle neritik - outer neritik. In calculating the percentage of fossils that characterize warm temperatures (Globigerinoides spp., Orbuliniforms, Globorotalia menardi, Globorotalia praemenadri, Globigerina venezuelana, Globoquadrina dehiscens, Globoquadrina praedehiscens, Globigerinella obesa, Globorotalia siakensis) and cold (Catapsydrax, globigerina woodi, Globorotalia scitula, Globigerrina sp p.s., Globorotaloides). Entering the outer neritic depositional environment, the climate gradually cools down, marked by an increasing number of fossils characteristic of cold temperatures. Determination of changes in ancient climate patterns at the research blood location using an analysis of the abundance of planktonic foraminifera that characterizes warm and cold temperatures in the study area has one pattern of temperature change, namely the cooling phase. The cooling phase begins at N13 - N14, and the temperature gets colder with deeper ocean depths occurring in the study area in the middle-outer neritic depositional environment. Keyword : Foraminifera, Ancient Climate, Sentolo Formation

Analisis Potensi Longsor Kecamatan Samigaluh, Kabupaten Kulonprogo, DIY, Menggunakan Perbandingan Metode Analitycal Hierarchy Process (AHP) Dan Weighted Linear Combination (WLC) Adam Nurapriyana AMNO; Bernadeta Subandini Astuti
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

One of the areas that is a landslide hotspot in Indonesia is Samigaluh District, Kulonprogo Regency, Yogyakarta Special Region. This research aims to conduct studies or research from previous researchers regarding the potential for landslides and map the distribution of areas prone to landslides and the parameters that influence the potential for landslides using a comparison between the Analytical Hierarchy Process (AHP) method and the Weighted Linear Combination (WLC) method with using the same parameters, which are considered to influence the level of vulnerability to landslides. In this research, there are several stages or methods that are followed, including the preparation stage, data collection stage, data analysis stage, final stage & report preparation. Based on the results of the analysis of weighting and standardization of values and making a comparison between the AHP method and the WLC method in the research area in Samigaluh District, Kulonprogo Regency, Special Region of Yogyakarta based on the results of calculations using the comparison and overlay matrix method, it was found that in the AHP method the landslide prone areas were divided into 3 danger index, namely low danger (1906 Ha), medium danger (1835 Ha), and high danger (3062 Ha). Meanwhile, in the WLC method, landslide-prone areas are divided into 2 hazard indices, namely medium hazard (339 Ha) and high hazard (6429 Ha). In both methods, the parameter that influences or dominates is the very steep slope. The results of field validation also show that the research area is a class landslide-prone area, which is found on the landslide-prone area (KRB) map that has been created.

Formasi Semilir Fasies Formasi Semilir di Daerah Prambanan dan Sekitarnya: fasies formasi semilir Astuti, Bernadeta Subandini; Isnawan, Dianto
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Regionally, the Semilir Formation is composed of volcanic products. That are dominated by tuff and lapilli, deposited in shallow marine to non-marine environments in the early Miocene to Middle Miocene, the deposition continued until the end of the Miocene. Based on outcrops in the Wukirharjo area, Prambanan, the Semilir Formation, is found to have debris flows and slumps, there is no information about these outcrops regionally, and this is the background to the research. The purpose of the study was to describe the character and facies of the Semilir Formation. The method used was stratigraphic measurement accompanied by paleontological analysis. The results of the study, the Semilir Formation can be divided into 2 facies classes, namely facies F (debris flow) and facies C (turbidity current). The lower facies of the debris flow product is 95 meters thick, composed of dominant lapilli-andesite breccia with a sandstone base mass, with a northwest-southeast paleocurrent direction; facies C is a product of current turbidity in the upper part composed of dominant tuff and sandstone-mudstone repetitions, with a west-east paleocurrent direction. The presence of debris flows and slump as the boundary between the two facies, or the beginning of the deposition of turbidity lithology products at this time.The age of the Semilir Formation in the research area using primary data is N6-N9, with a time gap of N7-N8. The overall age from both primary and secondary data, the Semilir Formation is N4-N16, with a time gap of N7-N8.

Sosialisasi Upaya Pencegahan Banjir Menggunakan Sumur Resapan di Kalurahan Timbulharjo Kabupaten Bantul ASIH, ANDREA SUMARAH; Bernadeta Subandini Astuti
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Pengabdian Kepada Masyarakat)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Timbulharjo sub-district, as part of Kapanewon Sewon, is categorized as a developed sub-district, and has experienced very rapid development progress. The impact of this development includes the reduction in agricultural land. This is because agricultural land has experienced conversion, both for housing and public facilities such as schools, offices, factories, hotels and tourist attractions. Considering that Timbulharjo Subdistrict is crossed by two large rivers, namely the Winongo River and the Code River, land conversion without being accompanied by replacement of catchment land or a good drainage system will cause a big problem, namely the potential for rain runoff which can cause inundation (flooding). This incident of inundation (flooding) has been proven to have occurred in several areas in Timbulharjo District, one of which was at Timbulharjo Elementary School on March 22 2021. Therefore, efforts need to be made to reduce the potential for flooding, one of which is with a simple drainage system that can be implemented by rural communities. . This activity aims to provide insight and knowledge to the public regarding one way to overcome the danger of flooding with absorption wells. The form of activity chosen was in the form of counseling and outreach to community members, one of which was the PKK women's group. The results achieved from this outreach activity are the formation of a community that understands flood management efforts using infiltration wells.

Title

Found 10 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 10 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 10 Documents
Search