Article Per Year (5 Year)
p-Index From 2021 - 2026
1.431
P-Index
This Author published in this journals
All Journal Indonesian Journal of Geography Reaktor IJOG : Indonesian Journal on Geoscience Jurnal technoscientia Jurnal Ilmiah Dinamika Rekayasa (DINAREK) UNEJ e-Proceeding Journal of Geoscience, Engineering, Environment, and Technology JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) Jurnal Geomine Indonesian Mining Journal PROMINE Buletin Sumber Daya Geologi Jurnal GEOSAPTA JURNAL TEKNOLOGI TECHNOSCIENTIA Indonesian Journal on Geoscience Indonesian Journal on Geoscience Journal of Applied Geology SRIWIJAYA JOURNAL OF ENVIRONMENT Indonesian Mining Journal Bulletin of Geology Scientific Contributions Oil and Gas
Donatus Hendra Amijaya
Departemen Teknik Geologi, Fakultas Teknik, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health

Published : 38 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Indonesian Journal on Geoscience

 1 
Geochemistry of Natural Gas Seepages in Boto Area, Bancak, Semarang, Central Java Amijaya, Hendra; Pameco, Pracoyo Adi
Indonesian Journal on Geoscience Vol 4, No 2 (2017)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.4.2.61-70

Abstract

DOI: 10.17014/ijog.4.2.61-70Three seepage gas samples collected from Boto Area, Bancak, Semarang, Central Java, were studied to determine their chemical characteristics using GC and GC-IRMS methods. They are composed 53 - 85% of methane predominantly. However, gas seep Site 3 sample has the highest N2 compound and the lesser extent to the samples Site 2 and Site 1 respectively. The two hydrocarbon gas seeps (Site 1, 2, and Site 3 samples) that are characterized by δ13C methane of -35.61‰ and -27.97‰, and values of δD methane of -112‰ and -109‰ respectively, are each isotopically distinct from all others suggesting, at least, they are derived from different maturity level. The Site 3 gas sample is suggested to be more mature than the others.
Syn-sedimentary Mafic Volcanics in the Eocene Coal-bearing Tanjung Formation, Senakin Peninsula, South Kalimantan (Borneo), Indonesia Moore, Tim Allen; Friederich, Mike C.; Trofimovs, Jessica; Anggara, Ferian; Amijaya, D. Hendra
Indonesian Journal on Geoscience Vol 7, No 1 (2020)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.7.1.65-85

Abstract

DOI:10.17014/ijog.7.1.65-85Syn-sedimentary mafic volcanism has been identified within a rift setting (Eocene Tanjung Formation) in the Senakin Peninsula, southeast Kalimantan. Fine-grained, dark-grey basalt lava occurs and has prominent vertically oriented columnar jointing. Petrographically, the basalt is composed of small euhedral pyroxene, olivine, and lath-shaped plagioclase phenocrysts within a very fine-grained dark coloured groundmass. A volcaniclastic unit also occurs and in outcrop has sharp contacts with underlying and overlying sedimentary mudstone. The unit is composed of cm-scale clasts of fine-grained to glassy textured basalt with vesicles of varying size and abundance. Euhedral pyroxene phenocrysts are observed within the clasts, although some with overprinting alteration. Palagonite alteration on the margins of some clasts is noted and is indicative of mafic composition volcanic material that has come into contact with sea water. Presence of bivalve and coral fragments in sandstone and mudstone underlying the volcaniclastic unit indicates emplacement into a marine environment. Core description from 33 locations over an 18 km transect length show that both the basalt and volcaniclastic sediments are extensive throughout the east Senakin area. Lithological relationships and compositional similarities between the basalt and volcaniclastic sediment suggest they are related and were contemporaneous with sedimentation within the Tanjung Formation. It is proposed that the basalt unit is designated the Tanah Rata Basalt Member of the Tanjung Formation. If a wider distribution occurs for the volcaniclastic unit it is proposed that it is termed the Gumbil Volcaniclastic Member of the Tanjung Formation.
Co-Authors Adibah, Najibatul Agung Harijoko Agung Rizki Perdana Agus Winarno Agus Winarno Ahmad Z.A. Ansory Akmaluddin Akmaluddin Andrea Hasbullah Ansory, Ahmad Z.A. Arifudin Idrus Beny Wiranata Beny Wiranata Deddy Tanggara Dwi Yuda Wahyu Setya Pambudi Edy Nursanto Edy Nursanto Edy Nursanto Eko Bayu Satria Fahrialam, Aldian Ferian Anggara Friederich, Mike C. Giwangkara, Atifa Maritza Gussyak, Selasian Harli Talla heryanti - efendi Hidayat, Tantan Htwe, Paike I Gusti Ngurah Antaryama Isnadiyati, Oyinta Fatma Jarot Setyowiyoto Jessica Trofimovs Kyuro Sasaki Miftahul Huda Mike C. Friederich Mohamad Anis Mohamad Anis Mohamad Anis Mohamad Anis Mohamad Anis, Mohamad Moore, Tim Allen Najibatul Adibah Ngisomuddin Ngisomuddin Ngisomuddin, Ngisomuddin Nomensen Ricardo Oyinta Fatma Isnadiyati Paike Htwe Pameco, Pracoyo Adi Pameco, Pracoyo Adi Perdana, Agung Rizki Petrus, Himawan Tri Bayu Pracoyo Adi Pameco Putri Dwi Afifah Ricardo, Nomensen Salahuddin Husein Samodra, Saptono Budi Sarju Winardi Sasaki, Kyuro Sinabang, Paul Vito Parluhutan Subagyo Pramumijoyo Subagyo Pramumijoyo Subagyo Pramumijoyo, Subagyo Subagyo Subagyo Subagyo Subagyo Subagyo Subagyo Subagyo Subagyo Sugeng Sapto Surjono Supardin Nompo Suryanto, Wiwit Tim Allen Moore Trofimovs, Jessica Widi Atmoko Wiranata, Beny Wiwit Suryanto