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Journal : Journal of Geoscience, Engineering, Environment, and Technology

Limnic Condition In Rheotrhopic Peat Type As the Origin of Petai Coal, Central Sumatra Basin, Indonesia Prayitno, Budi
Journal of Geoscience, Engineering, Environment, and Technology Vol 1 No 1 (2016): JGEET Vol 01 No 01 : December (2016)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (651.808 KB) | DOI: 10.24273/jgeet.2016.11.9

Abstract

Petrographic coal is the study of organic and inorganic components of bearing coal formation. This study aims to determine the composition, depositional facies, type and stage of the genesis of coal in the area of research. This research method using a diagram approach Diessel, 1986, Calder et al., 1991 to determine the depositional facies and peat ecosystems formation of coal carrier. Microscopic observations using Carl Zeiss Microscope and Point Counter Model F was conducted to determine the micro-organic components of coal. Based on microscopic investigation of the overall sample average abundance maceral vitrinite reached 66.3%, 30.32% mineral matter, maceral liptinite 3:26%, and to absent maceral inertinit no indicates oxidation process that occurs during the decomposition of organic matter. Syngenetic depositional pyrite component type spread sporadically on the surface of the coal seam in the form frambiodal and particulates. Facies deposition of coal based on the calculation of tissue prevetion index versus gelification index show faises limnic while the calculation of ground water index versus vegetation index show atmosphere rheotropic mires (correlation +) supported the absence maceral inertinit and funginite, hypothesized water level in stable condition was high watertable during the decomposition process takes place in an atmosphere ph 6-8 and eh balanced. Average rate comparison gelifikasi the preserved tissues of plant cells (tellocolinite) is smaller than the 23.6% plant cell tissue is not preserved (desmocollinite) amounted to 52.6% indicated from plants of the type herbaceous plant.
Development of Funginite on Muaraenim and Lower Members of Telisa Formations at Central Sumatra Basin - Indonesia Prayitno, Budi; Ningrum, Nining Sudini
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 2 (2017): JGEET Vol 02 No 02 : June (2017)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (632.388 KB) | DOI: 10.24273/jgeet.2017.2.2.342

Abstract

Petrography analysis of coal is the study organic and inorganic components of coal bearing formations. This research conducted observation method under microscopic of thin incision to identify organic maseral group. The organic composition of coal from Muaraenim Formation is known to average for vitrinite maseral group 79.30%, inertinite 10%, liptinite 3.4%, and non-organic 7.3%. While the composition of coal from the Bottom Members of Telisa Formation for the average of vitrinite maseral group 66.4%, mineral matter 30.32%, inertinite 3.26%. The liptinite maseral group is not present as a coal component in the study area. The funginite development of the Muaraenim Formation is quite abundant 2.8% indicating peat swamp ecosystem in wet-dry conditions in ph 3 -5. In contrast, the development of funginite Lower Members of Telisa Formation is known to be absent which is replaced by the presence of frambiodal pyrite and indicates peat ecosystem in wet conditions at ph 6 - 7.
Groundwater exploration using Vertical Electrical Sounding (VES) Method at Toro Jaya, Langgam, Riau Suryadi, Adi; Putra, Dewandra Bagus Eka; Kausarian, Husnul; Prayitno, Budi; Fahlepi, Reza
Journal of Geoscience, Engineering, Environment, and Technology Vol 3 No 4 (2018): JGEET Vol 03 No 04 : December (2018)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2239.067 KB) | DOI: 10.24273/jgeet.2018.3.4.2226

Abstract

Vertical Electrical Sounding (VES) method is one of many methods in geophysics that was conducted in this research at Toro Jaya, Langgam, Riau. The aim of this research is to investigate and locate the depth of groundwater layer (aquifer). Data acquisition of VES was carried out using GEOCIST with Schlumburger configuration of electrode. There are four VES point in this research with various length of cable ranging from 135 m up to 200 m. From four VES point shown two different of resistivity value range. Very low resistivity value with range 0,34 – 0,9 Ωm interpreted as aquifer layer. The aquifer layer of research area divided into two types which are unconfined aquifer and confined aquifer. Meanwhile, another resistivity value ranging from 1,69 – 7  Ωm was interpreted as clay layers.
Geology Of Tanjung Medan ,Rokan IV Koto , Rokan Hulu District, Riau Province Prayitno, Budi; Susilo, Susilo
Journal of Geoscience, Engineering, Environment, and Technology Vol 3 No 2 (2018): JGEET Vol 03 No 02 : June (2018)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (572.656 KB) | DOI: 10.24273/jgeet.2018.3.2.1597

Abstract

The Administrative of research area has been in Tanjung Medan, Rokan IV Koto, Rokan Hulu, Riau Province and geographically located at 0 ° 37 '28.488 "- 0 ° 40' 10.3692" LU and 100 ° 24 '55.6884 "- 100 ° 27 '37.5804 "BT. Research method used approach method and laboratory analysis to get data of geology modeling and re-construction of geological history in research area. Based on surface observation, the geology of research area consists of Slate (Permian-carbon), Granite intrusion (Permian-Trias) with distribution SouthWest-SouthEast on the center of map. Arenite Sandstone unit (Easly Eocene) unconformity with slate on the bottom. Alluvial Rokan river crosses all type off rocks from north to south of map. While structure growth  in the research area have been joints structure with main stress Southwest-NorthEast, its similar with trend tectonic setting of Sumatra island, on the other hand reverse fault indicates the formation of a basin of extension stress in the early Eocene. the formation of basins in basement rocks begun at the time of the formation of the north-south trending northern form of the fault block forming horst and graben as well as accommodated the precipitation of pre-tertiary clastic materials. Whereas the Oligocene trans-tensional compression system accommodating the sedimentation system in the formed of arenite sandstone (SBPa) unconformity above the basement rocks simultaneously on the basin base decrease. The distribution of arenite sandstones based on the geological reconstruction covering all parts of the rock distribution which then undergoes the same weathering process of the formation of Bukit Barisan volcanic path that controls the development of geological structure up to the present.
Co-Authors Abidin, Khoirul Abidin Adi Suryadi, Adi Agung R, Risa Rahelia Agung R., Risa Rahelia Agus Pramono Agustin, Tyssa Amelia Vega Ahmad Sarwadi, Ahmad Alfini Baharuddin Anak Agung Istri Sri Wiadnyani Andrie, Attila Alief Anugrah Apri Siswanto Ardhansyah, Mukti Ariadi, Adyanti Putri Aulia, Zahra Windi B. Hari Wibisono, B. Hari Bambang Setyadarma, Bambang Che Isa, Nik Norziehana Dedikarni Devy Setiorini Sa’adiyah Dewandra Bagus Eka Putra, Dewandra Bagus Eka Dimas Wihardyanto Eliya Pebriyeni, S.Pd., M.Sn, HESTI ROSITA DWI PUTRI, Dra. Ernis, M.Pd, Ernawati, Kadek Lusi Eva Wany, Eva Fahlepi, Reza Faridah Faridah Fauziyah , Nur Aini Febriansyah G. Perdamaian, Laksana Gatut Yudoyono Guntoro, Pri Joewo harmiyati, harmiyati Heriyanto Husnul Kausarian Idhil Ismail, Andi Ismail, Mohd Suhaili Bin Kartika, Siska Ayu Kasarian, Husnul Kholidiah, Kholidiah Kusuma, Gabriella Liem, Adrianus Leo M. Sani Roychansyah, M. Sani Mahera, Adinda Kholif Marianti, Annisa Meidi Arisalwadi Mita, Maichel Santo Wijaya Mohamed, Zakiah Munirah, Kultsum Musyarofah Musyarofah Musyarofah Musyarofah, Musyarofah Nafisah, Azmia Rizka Ngabito, Olivia Febrianty Nining Sudini Ningrum, Nining Sudini Norhidayah, Siti Nuraini , Umi Nuraini, Inas Nurhayati Nurhayati P, Ginanjar Perdana Panut Mulyono Poo-arporn, Yingyot Pratama, Maryo Inri Pratomo Prawirodirjo, Raden Ronggo Bintang Puji Astuti Purwitasari, Fadilla Puspitasari, Nurrisma Qomarun Qomarun Rahastama, Swastya Rahendraputri, Chandra Suryani Retno, Deddy Purnomo Roychansyah, M Sani S. Utami, Sentagi Sahid, Reza Achmad Sahira, Putri Salis, Fiki Rahmatika Saputra, Dwi Mulia Nur Sarjono Sarjono, Sarjono Sastrawan, Febrian Dedi Septiyanti, Resty Dwi Sholihah, Ni’matus shoodiqin, dian mart Sihaloho, Elisabeth Romanauli Simanjuntak, Cristovel Siregar, Riki Ruli Affandi Siti Ramdiah Siwanto, Apri Sri Yuliani Sudarto Sudarto Suhada, Egi Susantiningdyah, Healty Susilo Susilo Syahputra, Junico Dwi Syakirin, Hirzan Fakhrusy Tajalla, Gusti Umindya Nur Tanaka, Isao Tantri Bararoh Tri Yuni Iswati Triwikantoro Triwikantoro Utami, Sentagi Sesotya Utomo, Zinedine Zidane Vaningsiau, Pravangasta Ajeng Wany, Eva Wany Wibisono, B Hari Wiendu Nuryanti Wiwik Setyaningsih Yustie, Renta Yustisie, Renta