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All Journal Majalah Forum Teknik UGM Jurnal Ilmiah MTG BIOVALENTIA: Biological Research Journal Journal of Geology Sriwijaya
Edy Sutriyono
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science Immunology & microbiology Medicine & Pharmacology

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EVALUATION OF LOCAL RECLAMATION DATA FOR SUSTAINIBILITY INFRASTUCTURE FACILITIES (CASE STUDY OF KLAWAS ZONE AND SUBAN ZONE IN POST COAL MINING AIR LAYU TANJUNG ENIM) Gumanti, Johnnedy; Sutriyono, Edy; Salni, Salni; Harnani, Harnani
BIOVALENTIA: Biological Research Journal Vol. 4 No. 1 (2018)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (764.813 KB) | DOI: 10.24233/BIOV.4.1.2018.109

Abstract

This study identifies and analyzes the biophysical and environmental aspects of the environment, potentials and constraints, and then evaluates the post-mining reclamation land use that will be used for Other Use Areas (APL), the Residential Infrastructure Facility. Based on the Mining Closure Plan (RPT) on the utilization of former coal mine land at Air Laya Tanjung Enim, Klawas reclamation land use plan for Resettlement Facility and Zoning Infrastructures (Zone 2) while Suban reclamation land use plan for Productive Research area. Analysis in this research are scoring, SWOT and map overlay such as area function analysis and land suitability analysis based on physical condition of existing land. The result of this research is land suitability level for Residential Infrastructure Facility in Klawas, suitable land equal to 12% or 38 ha while 98% unfit or 258,7 ha from total area of 277,8 ha. Terms of land suitability in Klawas research area including Marginal (S3) with total scores of 80. where climate condition support with average temperature 24oC and rainfall 23,93 - 27,87 mm / day, slope of flat slope approaching water level river 0 - 3%, complex geological structure there are anticline in the form of fault and fracture, soil type Alluvial and Latosol, there are many aquifer with shallow depth to medium, there is vulnerability of geological disaster in the form of mass movement of soil / rock, flood, erosion and radiation exposure TENORM of moderate intensity. The results of land use evaluation for the Klawas reclamation area are more suitable for Freshwater Fishery Cultivation area than for Residential Infrastructure Facility area. Land tenure rate for Residential Infrastructure Facility in Suban, suitable land equal to 76 % or 237 ha while unsuitable 24% or 105 ha of total area of 342 ha. Conditions of land suitability in Suban's research area include Match (S2) with a total scores of 130. Climatic conditions support the average air temperature of 24°C and rainfall of 23.93 - 27.87 mm / day, the slope of flat slope is 3 - 8% there is no anticline structure in the form of fault, Andosol and Podsolic soil types, there is a shallow shallow depth of aquifer, no geological disaster vulnerability and low intensity TENORM radiation exposure. The results of the land-use evaluation for the Suban reclamation area are more suitable for the Residential Infrastructure area rather than for Productive Research area.
ESTIMASI BENTUK DASAR SUNGAI BERDASARKAN ANALISA BESAR BUTIR SEDIMEN DI MODIFIED AJKWA DEPOSITION AREA (ModADA) TIMIKA, PAPUA Budhi Setiawan; Edy Sutriyono; Merri Jayanti
Jurnal Ilmiah MTG Vol 3, No 1 (2010)
Publisher : Magister Teknik Geologi Program Pascasarjana UPN ”Veteran” Yogyakarta

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Abstract

Tailing is one of waste types produced by mining activity at PT. Freepot Indonesia (PTFI), and it is also called as sirsat, which is the representing abbreviation from sand in mining. The sirsat is placed at ModADA (Modified Ajkwa Deposition Area), an area that has been modified and managed for sirsat deposits. This area is about 235 square kilometres, which is bounded from the surrounding region by West Levee and East Levee. The system used by utilizing the river flow to carry the tailing from the mountain to the deposition area in ModADA.The river flow along the channel contains eroded materials which are correlated with the friction factor, velocity of sedimentation, and geometric configuration showing the bed river morphology. Grain size is a factor influencing the bed river morphology which is used as parameter in this study. The measurement and accumulation of sirsat grains have been conducted since 1997 up to now, and at the same time construction of river cross sections from highland to lowland in ModADA has also been made. These parameters are then utilized for analysis by using statistical approach such as mean, variance, and standard deviation. Estimation of the bed river morphology is carried out by analysing the characteristics of channel base form on the basis of the D50 sediment grain sizes. The estimation of the bed river morphology may be used to predict sedimentation pattern of the river flow in Ajkwa lowland in Timika, Papua.Keywords: ModADA, Grain Size, Bedriver, Sedimentation
ACCRETION HISTORY OF PALEOGENE ARC TERRANES IN WESTERN PAPUA: EVIDENCE FROM APATITE FISSION TRACK DATA Edy Sutriyono
Jurnal Ilmiah MTG Vol 1, No 2 (2008)
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

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Abstract

Studi ini menggunakan data jejak fisi pada mineral apatit untuk merekonstruksi sejarah pendinginan batuan sehubungan dengan penggabungan segmen busur kepulauan Paleogen di pinggiran utara mikrokontinen Papua Barat. Hasil analisis jejak fisi dari unit Tosem Oligosen memperlihatkan bahwa daerah Papua Barat merekam dampak dari tumburan lempeng yang diikuti intrusi magma pada Oligosen. Pemodelan data jejak fisi menunjukkan bahwa sikuen batuan yang menyusun blok Tosem memiliki sejarah pendinginan yang kompleks. Episode pendinginan yang lebih awal terjadi setelah kristalisasi permulaan di Miosen Awal pada ~18 Ma. Peristiwa pendinginan pasca penerobosan magma ini kemungkinan terjadi mengikuti periode mineralisasi epitermal yang diakibatkan oleh larutan hidrotermal. Sedangkan, rezim pendinginan yang lebih akhir terjadi karena pengangkatan dan denudasi sebagai akibat tumburan dengan segmen Tamrau di Miosen Akhir pada ~8 Ma.Demikian juga data jejak fisi yang berasal dari unit Tamrau Miosen Tengah memperlihatkan bahwa episode kompresional tektonika akibat interaksi busur kepulauan-mikrokontinen menerus sepanjang waktu. Oleh sebab itu, sikuen batuan mengalami pendinginan yang cepat karena pengangkatan dan denudasi di Miosen Akhir pada ~5 Ma. Lebih jauh lagi diperkirakan bahwa pergerakan mengarah ke barat dari busur kepulauan hingga mencapai posisi sekarang telah diakomodasikan oleh sesar geser mengiri.Kata kunci: busur kepulauan Paleogen, jejak fisi, sejarah pendinginan
Provenance Study and Tectonic Implications on Rock Sequences in The Lengguru Fold Belt of Western Papua: Constraints from Zircon Fission Track Thermochronology Edy Sutriyono
Forum Teknik Vol 27, No 2&3 (2003)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

The present zircon fission track thermochronologt study reveals Triassic to Pliocene source terrains supplying clastic materials into the present successions in western Papua. The provenance of sedimentary rocks in the region appears to have associated with igneous activities, suggesting an episode of tectonic events in Mesozoic and Cenozoic. Importantly, the Pliocene Buru Formation in the Lengguru Fold Belt contains abundant Paleogene volcanic zircons, which might have been derived from erosion of the Weylond Terrane in the latest Miocene-Pliocene. This suggests the Weyland Terrane was part of the Paleogene 'Caroline Arc, that was eroded after Lute Miocene collision with the western Papua microcontinent. The main compressional pulse in the studied area occurred from -12-4 Ma. The deformation in the mountainous belt in western Papua from 4-0 Ma has been dominated by transpression. This transpressional regime continued in the fold belt, but with less convergence. Meanwhile, compression continued in the frontal part of the Lengguru Fold Belt, creating Pleistocene foldingfeatures such as the Buru Anticline, the Umar Anticline, and the Poronggo Anticline in the eastern Lengguru Fold Belt section. At the present day, transpression is occurring along theTarera'Aiduna Fault with ongoing uplift of the western Papua Fold Belt. However, extension and subsidence are occurring in the Lengguru Fold Belt southeast of Cendrawasih Bay.Keywords : sedimentary rocks, zircon fission, transpression
Analisis Morfotektonik Daerah Tamansari Dan Sekitarnya, Kabupaten Tanggamus, Lampung Astria Denita; Edy Sutriyono
Journal of Geology Sriwijaya Vol 2 No 1 (2023): The Journal of Geology Sriwijaya
Publisher : Fakultas Teknik Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8240504

Abstract

Daerah penelitian secara administrasi berada di Desa Tamansari, Kecamatan Pugung, Provinsi Lampung. Daerah penelitian termasuk kedalam zona Sesar Sumatera dengan stratigrafi regional termasuk kedalam endapan lajur barisan. Pengolahan data berfokus pada data spatial yang merupakan proses pembuatan model serta perhitungan analisis morfotektonik, menggunakan software ArcGIS, Mapsource dan GlobalMapper. Analisis morfotektonik menggunaka metode kuantitatif dengan menggunakan 3 parameter meliputi, rasio lebar lembah dan tinggi lembah (Vf), sinusitas muka gunung (Smf), dan kerapatan pengaliran (Dd). Analisis morfotektonik menunjukkan nilai Dd berkisar 2,2 – 2,28, menunjukkan bahwa didaerah penelitian tersebut termasuk dalam kerapatan yang sedang. Perhitungan nilai Smf 1,2 – 2,4, menunjukkan daerah penelitian masuk ke dalam kelas 2. Dan perhitungan nilai Vf yaitu 0,13 - 0,8 dimana hal ini dikategorikan dalam kelas sedang dengan tingkat uplift yang tinggi hingga sedang, dan tingkat erosi secara vertikal yang lembah curam dan dasar lembah yang sempit. Aktivitas tektonik yang berada di daerah penelitian menghasilkan bentang alam berupa perbukitan dengan indikasi dari adanya struktur geologi berupa sesar yang ada disekitarnya.
Penentuan Lingkungan Batimetri Berdasarkan Fosil Foraminifera Daerah Wonoharjo dan Sekitarnya,Kabupaten Kebumen-Banyumas,Jawa Tengah Suci Adelia Rahmawati; Edy Sutriyono
Journal of Geology Sriwijaya Vol 2 No 1 (2023): The Journal of Geology Sriwijaya
Publisher : Fakultas Teknik Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8240487

Abstract

This research was conducted in Wonoharjo located Kebumen-Banyumas Regency. This area belongs to the Halang Formation with sandstone rock units that belong to the South Serayu Basin. The research method used in this study is descriptive paleontology analysis with the sampling of sandstone taken from two different rivers which are Wonoharjo river and Lemungsur river, followed by laboratory analysis. This research aims to find out paleobatimetry. Based on laboratory analysts' results, there is obtained bentonic foraminifera from several species namely, Pyrgo depressa, Clavulina pacifica, Monalysidium politum, Nodosaria calenulata, Operculina ammonoides, Slioostoniella fisluca, Streblus becarri, Clavulina pacifica, Technitella legume, Amphicoryna scalaris. With the discovery of bentonic foraminifera fossils can be interpreted that the Halang Formation sandstone unit found in the Wonoharjo river has a batimetry environment, which is the edge Neritik zone with a relative age range of the Middle Miocene. While the sandstone Halang Formation found in the Wonoharjo river has a batimetry environment, namely the Middle Neritic zone to outer Neritic with a relative age range of the Middle Miocene.
Co-Authors Astria Denita Budhi Setiawan Gumanti, Johnnedy Gumanti, Johnnedy Harnani, Harnani Harnani, Harnani Merri Jayanti Salni Suci Adelia Rahmawati