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All Journal Indonesian Journal of Geography Bulletin of Scientific Contribution : Geology IJOG : Indonesian Journal on Geoscience Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Jurnal Locus Penelitian dan Pengabdian Journal of Geosciences and Applied Geology

Yoga Andriana Sendjaja, Yoga Andriana

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Author-ID : 568426

Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Mathematics

Published : 8 Documents Claim Missing Document

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Articles

Depositional Environment and Source Rocks Potential of the Miocene Organic Rich Sediments, Balikpapan Formation, East Kutai Sub Basin, Kalimantan Permana, ST.,M.Sc., Asep Kurnia; Sendjaja, Yoga Andriana; Panggabean, Hermes; Fauzely, Lili
Jurnal Geologi dan Sumberdaya Mineral Vol 19, No 3 (2018): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (414.578 KB)

The fluvial to deltaic sediments of the onshore petroleum prolific of the Mahakam Delta in the East Kutai Sub-basin constrain organic rich sediments particularly within the Balikpapan Formation. This formation has been recognized as a source rocks of the conventional oil and gas production in the Kutai Basin. However, the geochemical studies to understand the origin of organic matter and paleo-environmental condition of this formation are still limited. A 390 selected samples of organic rich sediments from the Balikpapan Formation were analyzed by using organic petrographic and geochemical analyses. These analyses were used to define the sedimentary organic matter and moreover the paleo-environment conditions during deposition and their implication to the source rocks and hydrocarbon potential. The organic rich shales and mudstones of this sediment have high total organic content (TOC) values in range of 0.05% – 15.63% and coals are ranging from 2.25% to 57.11%. They are and mainly dominated by vitrinite maceral, with minor liptinite and inertinite. The minerals mostly consist of clay minerals, with minor pyrite and oxide minerals (quartz and carbonates). Rock Eval Pyrolisis analysis results show low hydrogen index (HI) values (4 to 248.52mgHC/g TOC) and predominance of vitrinite maceral reveal prevalence of terrestrially derived type III organic matter and their potential to generate gas. The max temperature values which is ranging from 411 to 435°C and Ro ranges 0.7% - 0.64% implies a low to moderate thermal maturation levels for an active source rocks. The organic matter accumulation is mainly associated with black shales and coals in the delta plain environment, derived from terrigenous organic matter.Keyword: Depositional environment, source rocks, Balikpapan Formation, Kutai Basin.

Biomarker Composition of Some Oil Seeps from West Sulawesi, Indonesia Sutadiwiria, Yarra; Hamdani, Ahmad Helman; Sendjaja, Yoga Andriana; Haryanto, Iyan; Yeftamikha, Yeftamikha
Indonesian Journal on Geoscience Vol 5, No 3 (2018)
Publisher : Geological Agency

DOI: 10.17014/ijog.5.3.211-220A suite of oil seep samples collected from the Lariang and Karama Basins, West Sulawesi, Indonesia, have been analyzed using GC and GCMS techniques. Their biomarker compositions have been used to reveal the likely source rock that produces oil. These oil seep samples contain a range in both the concentration of hydrocarbons present and certain level of biodegradation experienced. All sterane m/z 217 data display a familiar pattern of steranes with carbon numbers from 27 to 29 together with pregnane and homo-pregnanes, including rearranged steranes. Triterpane (m/z 191) data show a moderate content of tricyclic terpanes (Tri/C30H), medium to high ratio of norhopane/hopane (C29/C30), and medium to high abundant land plan marker such as resin bicadinanes(Bic/C30H) and oleananes (Ol/C30H). The presence of high abundant oleananes in these samples has been interpreted as the evidence for a marine influence during early diagenesis that may occur by marine or via re-deposition of peat organics in marine sediments. Hence, these results state that the organic matter facies for their source rock oil seep samples from the West Sulawesi region are detected as mixed between allochthonous macerals from typical terrestrial higher plants transported into the basin from distal swamps and soils and some marine organic matter.

Air and noise pollution analyses near oil and gas fields in the Mahakam Delta, Kalimantan, Indonesia Irwansyah, Muhammad; Sunardi, Edy; Mulyo, Agung; Sendjaja, Yoga Andriana
Indonesian Journal of Geography Vol 56, No 1 (2024): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.87454

The Mahakam Delta is a strategic industrial area in East Kalimantan, Indonesia, in which oil and gas industries reduce ambient air quality and generate excessive noise. This research aimed to analyze the ambient air and noise pollution attributed to oil and gas production activities in the delta. Relevant parameters at five sampling points (UA-02 to UA-06) were measured and further analyzed in the laboratory, including total suspended particulate (TSP), SO2, Pb CO, NO2, O3, temperature, humidity, wind direction, wind speed, and noise. Indonesia’s air pollutant standard index (locally abbreviated as ISPU) with four parameters (CO, NO2, SO2, and O3) was used to determine the ambient air quality, and provisions written in the Decree of the Minister of Environment No. 50 Kep-48/MENLH/11/1996 were consulted for the noise quality assessment. Results showed ISPU values in the range of 0–50 at the five sampling points, suggesting good ambient air quality and compliance with Government Regulation No. 22 of 2021. In addition, it was revealed that the noise parameter was lower than the upper threshold set in the Ministerial Decree, namely 65 dB. Nevertheless, monitoring air and noise quality at the main pollutant sources should be regulated through policies and implemented to protect the public from exposure to potential pollutants.

SOURCE ROCK EVALUATION BASED ON GEOCHEMICAL DATA AND 1D BURIAL HISTORY MODELLING IN X BLOCK, SOUTH SUMATERA BASIN Dwi Putri, Tiara Intan; Pramudito, Dimas; Sendjaja, Yoga Andriana; Ilmi, Nisa Nurul
Journal of Geological Sciences and Applied Geology Vol 7, No 1 (2023): Journal of Geological Science and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v7i1.49020

The study was conducted in the South Sumatra Basin using geochemical data consisting of three exploration wells to determine geochemical characteristics such as richness, quality, maturity, and the depositional environment of the source rock. Additionally, the study delved into the one-dimensional burial history of the study area. Subsequent phases of the research involved the analysis of three crude oil samples and three rock extract samples. This analytical process encompassed the utilization of gas chromatography (GC) and gas chromatography - mass spectrometry (GC-MS) data. By scrutinizing the biomarker parameters extracted through GC and GC-MS, the research sought to discern the specific characteristics of the depositional environment for each sample and establish a correlation between the source rock and the crude oil. Based on source rock evaluation, the three source rock wells are potential source rock. Based on biomarker analysis, TAN-1 and TAN-2 have an oxic terrestrial/fluvio-deltaic characteristics with a dominantly higher plant contributions. Samples RA-12, RA-17, and RA-61 have a suboxic – anoxic fluvio-deltaic characteristics with contributions of dominantly marine algae. The oil samples taken from these wells have a negative correlation with the source rock samples. Maturity analysis of the TAN-1, TAN-2, and TAN-3 wells is still in its immature phase based on one-dimensional burial history modeling.

Tephrostratigraphy Study Using Petrographic Method in Leles Sub-basin, Bogor, WestJava Carrisa, Dea; Nasir, Muhammad; Sendjaja, Yoga Andriana; Ilmi, Nisa Nurul; Sunardi, Edy
Journal of Geological Sciences and Applied Geology Vol 2, No 1 (2017): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i1.13424

Tephrostratigraphy is a study used in determining pyroclastics layers,especially those in Ash/Tephrograin-sized, that can be used as a correlational tool to find out the order of sedimentation from one volcanic eruption. Leles Sub-Basinal, Garut, is composed mainly by Quartenary Sediment on the toppest layer and Tertiary Sediment on the bottom (Sunardi,2014). These thing of Garut Basin located in a plateau which is surrounded by volcanic plateau and dominated by lake sediment, and geographically located at low latitudes (Sunardi,2016). Based on the existence of Leles Sub-Basinal which is located on active volcanic complex, followed by its pyroclatics sediments, it is very ideal for this area to be the object of Tephrostratigraphy Study. Moreover, earlier study was never been done before thoroughly at LelesSub-Basinal area.Based on mineralogical study, the tephroof Leles Sub-Basinal divided to Crystal Tuf, Lithic Tuf,and Vitric Tuf (Schmidt,1981). The commonly found minerals are quartz, plagioclase, pyroxen, feldspar, and opaque.The emersion of other minerals, suchasolivin, amphibole, and biotite are not visible in general. Based on the presentastion of that main minerals, it was concluded that the tephrolocated in Leles Sub-Basinal came fromandesitic and basaltic magma types. While from granulometric analysis, tephro from Leles Sub-Basinal was grouped in coarse ash and fine ash with well sorting and fall deposits mechanism of sedimentation. This tephrocontains many heavy minerals with bulk density variated around 2850-2900 kg/m3, which consists of apatite, biotite, and hornblende. Those heavy minerals are commonly found in ash falls lithology (Gale & Hoare, 2011). Stratigraphically, there were two period so feruption happening at Leles Sub-Basinal area, with unidentified volcanic vents due to lack of data. It is also concluded that the supported station in the south has stratigraphical relationship with keystation. Keywords: Tephro, Tephrostratigraphy, Tuf, Leles Sub-Basinal.

TINJAUAN ALIH-TEMPAT KELOMPOK OFIOLIT DI DAERAH CILETUH, JAWA BARAT Sendjaja, Yoga Andriana; Sunarie, Cecep Y.
Bulletin of Scientific Contribution Vol 13, No 3 (2015): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Ophiolite outcrops offers a unique opportunity to learn directly oceanic lithosphere, as ophiolite represents one of the few outcrops of rock that body can not be reached. Ophiolite is interpreted in the context of plate tectonics, as part of the oceanic lithosphere thrust into the continent during the first phase of orogenesa. Many geologists believe that the definition of ophiolite according to Penrose Field Conference in 1972, which is a typical sequence of rocks composed of, starting from the bottom: the complex ultramafic, gabbro complex, complex sheeted mafic dikes, complex mafic-volcanic and sedimentary pelagos. Ophiolite sequence may be incomplete, torn or termetamorfisme. Group ophiolite in area Ciletuh is an assemblage of mafic rocks (basalt, gabbro and ultramafic (peridotite, serpentinite), which is closely associated with the sedimentary-volcanic and metamorphic rocks. Generally ofiolitnya a sequence ophiolite very incomplete, and the mechanism of the transferor-tempatannya (emplacement ) can be equated with ophiolite "Cordilleran", which is rather a ophiolite (ocean floor, which did not contain fragments of the continent) above the subduction complex.

Karakteristik Kimia Organik Pada Akifer Bebas di Beberapa Lokasi Pemanfaatan Lahan Daerah Jatinangor Dan sekitarnya wahyudi, .; Suganda, Bombom Rahmat; Hadian, Sapari Dwi; Sendjaja, Yoga Andriana; Irawan, Budi
Bulletin of Scientific Contribution Vol 17, No 3 (2019): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Daerah Jatinangor secara umum dimanfaatkan untuk kegiatan pertanian, permukiman dan industri. Peningkatan pemanfaatan lahan permukiman berpotensi mengakibatkan penurunan kualitas airtanah. Objek penelitian ini untuk mengetahui perbedaan sifat kimia organik airtanah pada akifer dangkal di beberapa jenis pemanfaatan lahan. Penentuan konsentrasi sifat kimia organik airtanah dilakukan dengan pengujian laboratoium KMnO4, BOD dan COD sebagai parameter yang menjadi indikator bahan organik di perairan. Hasil penelitian menunjukan bahwa terdapat perbedaan konsentrasi paramater kimia organik airtanah pada jenis pemanfaatan lahan permukiman dan industri terutama pada musim hujan.

Potensi, Kebijakan dan Pemanfaatan Logam Tanah Jarang (LTJ) Menuju Net Zero Emission (NZE) di Indonesia Puspita, Ramelia Eka; Syafri, Ildrem; Sendjaja, Yoga Andriana; Ramzis, Novaldo
Jurnal Locus Penelitian dan Pengabdian Vol. 4 No. 5 (2025): JURNAL LOCUS: Penelitian & Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v4i5.4124

Salah satu mineral yang masuk dalam kategori mineral kritis dan strategis yaitu Logam Tanah Jarang (LTJ), yang menunjukkan betapa pentingnya mineral ini untuk kemajuan industri berbasis teknologi ramah lingkungan (green energy). LTJ merupakan bahan baku/ komponen dasar pembuatan barang elektronik serta teknologi tinggi lainnya. Sebagai komponen dasar, tentunya perlu diketahui berapa besar potensinya, kebijakan yang sudah dibuat oleh pemerintah, dan pengolahan atau ekstraksi logam tanah jarang sehingga dapat dimanfaatkan agar target Net Zero Emission (NZE) dapat tercapai seperti yang sudah disepakati pada persetujuan paris terkait strategi mengatasi perubahan iklim. Penelitian ini bertujuan untuk mengetahui seberapa besar potensi LTJ di Indonesia, kebijakan pengelolaan LTJ, pemanfaatan LTJ sebagai komponen dasar pembuatan teknologi dan energi yang ramah lingkungan sehingga sejalan dengan strategi Pemerintah dalam program NZE. Metode penelitian yang dilakukan yaitu dengan pengambilan sampel di lokasi penelitian berada di Daerah Tanjung Binga dan sekitarnya, Kabupaten Belitung dan analisis menggunakan XRF, ICP-MS dan sayatan tipis untuk variabel potensi logam tanah jarang serta analisis SWOT untuk variabel potensi, kebijakan, pemanfaatan dan net zero emission. Dari hasil pengamatan menggunakan analisis petrogarfi di dapat bahwa pada tiga sample diklasifikasikan ke dalam batuan granitik dari formasi Granit Tanjungpandan dengan paragenesis bervariasi, sedangkan hasil analisis geokimia nya belum ditemukan mineral sulfida akan tetapi dilihat dari formasinya mengandung mineralisasi timah dan memperlihatkan kecenderungan pengayaan Na2O dan Light Rare Earth Elements (LREE), diharapkan hasil penelitian ini bisa menjadi informasi dalam pemetaan potensi LTJ, pembuatan kebijakan yang tepat sehingga LTJ dapat dikelola dengan baik dan mampu mencapai target NZE.

Co-Authors . Wahyudi Agung Mulyo Ahmad Helman Hamdani, Ahmad Helman Anggoro Tri Mursito Bombom Rahmat Suganda, Bombom Rahmat Budi Irawan Carrisa, Dea Cecep Y. Sunarie, Cecep Y. Dimas Pramudito Dwi Putri, Tiara Intan Edy Sunardi Fauzely, Lili Heni Pujiastuti Hermes Panggabean Ildrem Syafri Isnaniawardani, Vijaya Iyan Haryanto, Iyan Muhammad Irwansyah, Muhammad Nisa Nurul Ilmi Permana, ST.,M.Sc., Asep Kurnia Praptisih Praptisih Puspita, Ramelia Eka Ramzis, Novaldo Sapari Dwi Hadian, Sapari Dwi Yarra Sutadiwiria Yeftamikha, Yeftamikha

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