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Depositional Environment Analysis Carbonate Rocks in Montasik District Fahri Adrian; Ariadi Putra; Akmal Muhni; Marwan Marwan
Journal of Aceh Physics Society Volume 9, Number 3, September 2020
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v9i3.17028

Abstract

Kecamatan Montasik terdiri dari 2 formasi yaitu Formasi Gunungapi Lam Teuba berumur Pliosen Akhir sampai Plistosen Akhir dan Formasi Anggota Padangtiji berumur Pliosen Awal sampai Pliosen Tengah. Litologi Formasi Anggota Padangtiji terdiri dari konglomerat, batulanau, batupasir gampingan dan batu gamping. Lingkup penelitian ini meliputi kajian tentang kondisi geologi permukaan dan analisis lingkungan pengendapan sedimen karbonat pada lokasi penelitian. Metode yang digunakan dalam penelitian ini yaitu pengambilan data langsung di lapangan dan menganalisis petrologi dan petrografi pada sampel batuan. Litologi pada lokasi penelitian terdiri dari 7 satuan yaitu guguran lava, lava andesit, lapili jatuhan piroklastik, tuf jatuhan piroklastik, konglomerat, batugamping terumbu dan batupasir gampingan. Lingkungan pengendapan sedimen karbonat yang terdapat pada lokasi penelitian terbentuk di laut dangkal (reef) pada kedalaman 0 m - 200 m di bawah permukaan laut. Zona fasies pengendapan batugamping pada lokasi penelitian terendapkan pada zona platform margin sands  dan organic buildups. Sedangkan zona fasies terumbu pada lokasi penelitian terdapat pada zona reef front. Montasik district consists of two formations, Gunungapi Lam Teuba Formation aged Late Pliocene – Late Pleistocene and Padangtiji Member aged Early Pliocene – Middle Pliocene. Lithology of Padangtiji Member consists of conglomerate, siltstone, carbonate sandstone, and limestone.  The scope of this research includes a study of surface geological conditions and depositional environmental analysis of carbonate sediment. The method used in this study is direct data collection in the field and analyzing petrology and petrography in rock samples. Lithology of the research area consists of lava drop, andesit, lapili pyroclastic, tuff pyroclastic, conglomerate, fosilliferous limestone, and carbonate sandstone. Depositional environment in the research area formed at shallow marine (reef) on 0m-200m depth under sea level. Depositional facies zone in the research area is on the margin sands platform zone and organic buildups, while Reef facies zone contained in reef front zone.Keywords: Geological Mapping, Depositional Environment, Carbonate Rocks, Petrography, Montasik
Petrogenesis of igneous rock in Siron Krueng Area, Kuta Cot Glie District, Aceh Besar Regency, Aceh Province Dewi Sartika; Reza Gunawan; Akmal Muhni; Fahri Adrian
Journal of Aceh Physics Society Volume 11, Number 1, January 2022
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v11i1.21710

Abstract

Desa Siron Krueng merupakan salah satu desa yang berada pada Kecamatan Kuta Cot Glie, Kabupaten Aceh Besar, Provinsi Aceh. Formasi yang terdapat pada lokasi penelitian terdiri dari Formasi Seulimeum (Qtps), Formasi Komplek Indrapuri (Tuic), Formasi Meucampli (Tlm) dan sedikit Formasi Batugamping raba anggota terumbu (Murlr). Metode yang digunakan pada penelitian ini berupa pemetaan geologi dan analisis petrografi (thin section) pada batuan beku. Tujuan penelitian ini yaitu untuk melihat kondisi litologi di lokasi penelitian, dan menginterpretasi sayatan tipis batuan yang berguna untuk melihat kandungan mineral dan untuk mengetahui petrogenesis batuan beku yang terdapat pada lokasi penelitian. Berdasarkan hasil penelitian yang telah dilakukan, litologi yang terdapat pada lokasi penelitian terdiri dari 3 satuan batuan yaitu satuan batupasir tufaan, satuan serpentinit, dan satuan andesit. Pada hasil analisis petrografi, mineral yang terdapat pada batuan beku di lokasi penelitian terdiri dari ; kuarsa, piroksen, hornblende, plagioklas, olivin, opak, dan gelasan. Petrogenesis batuan beku di lokasi penelitian terdiri dari batuan beku intermediet dengan jenis magma pada batuan yang bersifat basa dan termasuk kedalam jenis batuan beku vulkanik, serta batuan beku ultramafik dengan jenis magma pada batuan yang bersifat ultrabasa dan merupakan jenis batuan beku plutonik
Groundwater Vulnerability to Pollution Using the GOD Method in Banda Aceh City, Aceh Province Dewi Sartika; Akmal Muhni; Rifqan Rifqan; Hidayat Syah Putra
Journal of Aceh Physics Society Volume 9, Number 3, September 2020
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v9i3.17332

Abstract

Kerentanan airtanah terhadap pencemaran dapat terjadi akibat adanya aktivitas manusia. Oleh karena itu, kualitas dan kuantitas airtanah perlu diperhatikan. Penerapan metode GOD (Groundwater Occurrence, Overlaying Lithology and Depth Of Groundwater) dilakukan untuk mengkaji kerentanan airtanah di Kota Banda Aceh, Provinsi Aceh. Metode GOD merupakan metode yang dilakukan dengan mengevaluasi tiga parameter yaitu jenis akuifer, jenis litologi diatas akuifer dan kedalaman muka airtanah. Penelitian ini bertujuan memetakan daerah yang berpotensi terjadi pencemaran berdasarkan tingkat kerentanan air tanah dengan menggunakan metode GOD, di Kota Banda Aceh. Hasil dari penelitian menunjukkan tingkat kerentanan airtanah intrinsik berdasarkan metode GOD berkisar pada nilai sedang sampai tinggi. Zona sedang berdasarkan metode ini ditunjukkan pada nilai indeks 0.45-0.5 yang mencakup beberapa daerah seperti Kuta Alam, Kutaraja, Meuraksa, Jaya Baru, Banda Raya, Lueng Bata, dan Baiturrahman. Dan daerah dengan indeks tinggi mencakup kecamatan Syiah Kuala dan Ulee Kareng dengan nilai 0.52-0.69. Kondisi litologi pada daerah penelitian menunjukkan tipe akuifer yang sejenis yaitu sistem akuifer aluvial. The vulnerability of contaminated groundwater caused by human activity. Thus, the quantity and quality of groundwater need more attention. The application of GOD (Groundwater Occurrence, Overlaying Lithology and Depth of Groundwater) methods is done for a review of groundwater vulnerability in Banda Aceh City, Aceh Province. The GOD method is a method by investigating three parameters, they are: type of aquifer, type of lithology above the aquifer, and depth of groundwater table. This study aims to map areas with potential contamination based on the level of groundwater vulnerability using the GOD method, in Banda Aceh City, Aceh Province. The result of the research shows that the level of intrinsic groundwater vulnerability in Banda Aceh by the GOD method range from moderate to high. Moderate groundwater vulnerability zone based on this method has an index value of 0.45 - 0.5 covers several areas, they are: Kuta Alam, Kutaraja, Meuraksa, Jaya Baru, Banda Raya, Lueng Bata, and Baiturrahman. And the high index value covers Syiah Kuala and Ulee Kareng with 0.52 - 0.69. The lithology of the studied area shows the same type of aquifer as an alluvial aquifer system. Keywords: groundwater vulnerability, GOD method, aquifer
Aplikasi Metode Resistivitas 2D untuk Menentukan Intrusi Air Laut di Lambada Lhok Aceh Besar Aceh Gartika Setiya Nugraha; Marwan Marwan; Akmal Muhni
Jurnal Teknosains Vol 9, No 1 (2019): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.34368

Abstract

Lambada Lhok is one of the coastal areas with the most severe water crisis in Aceh Besar, Aceh. Clean water crisis happening in the area because of their breach of saltwater into freshwater aquifers and also due to the large decrease in ground water level that resulted in seawater intrusion. This research was conducted on four lines at two locations, namely: 3 (three) lines in the village of Lambada Lhok and 1 (one) line in the village of Kajhu. Kajhu village was used as comparative data for areas that are free from the intrusion of sea water. The research method using 2D resistivity Wenner-Schlumberger configuration, while the data acquisition using the ARES equipment. Data analysis using Res2Dinv software to make 2-dimension (2-D) cross section model. Lambada Lhok village is an alluvial deposition with an average height of 0-5 meters above sea level (dpl). The subsurface lithology of the village lambada lhok consists of clay sand, sandy clay and clay. Based on the results of the analysis of resistivity values indicate that the suspected sea water intrusion in the village of Lambada Lhok reaches a depth of 29 meters. It can be concluded that the spread of sea water intrusion in Lambada Lhok beginning of the line LL 1, LL 2 to LL 3. Distribution of seawater intrusion are most severe in the trajectory LL 2 and began to decrease at LL 3 trajectory.
Characterization of Landslide geometry using Seismic Refraction Tomography in the GayoLues, Indonesia Muzakir Zainal; Badrul Munir; Marwan Marwan; Muhammad Yanis; Akmal Muhni
Journal of Physics and Its Applications Vol 3, No 2 (2021): May 2021
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v3i2.10601

Abstract

Landslides are the most common geological phenomenon in Indonesia.The event is damage to public infrastructure, and fatalities was a big impact. Therefore, mapping the geometry of landslides is a part of the mitigation effort possible by geophysical methods. In this research, we applied seismic refraction tomography (SRT) to study the geometry of the sliding zone from the landslide event.TheNational Disaster Management Authority reported that the area was frequently occurring landslide disaster, i.e. 2018, 2019 and 2020 which caused the public infrastructure and obstructed the road access from the central to the west of Aceh. The SRT was measured in two profileslong the road.Data measurements were conducted on the side of the Babahrot - GayoLues road section that had experienced landslides.Measurements were made using the Seismograph PASI 16S24-P and 24 geophones to obtain a 92-meterlong profile with 2 meter spacing between the geophones. P-wave velocity data modeling is done using ZondST2D software.The results of modeling profiles 1 and 2 describe three different subsurface layers.The SRT profile 1 model consists of slate (0.2 - 0.7 km/s), clay (0.8 - 1.3 km/s), and sandy clay (1.4 - 1.9 km/s).While, the model of profile 2 consists of slate (0.5 - 1.0 km/s), clay (1.1 - 1.6 km/ s), and sandy clay (1.7 - 2.5 km/s).The contrasting wave velocity model shows that the SRT method can be used in landslide studies as a reference in determining the mechanism of the landslide system.
The Characteristics Of Shoreface Deposits And The Reservoir Implication Of Seulimum Formation, Aceh Besar Hidayat Syah Putra; Rifqan Rifqan; Akmal Muhni; Dewi Sartika
Jurnal Geosains dan Teknologi Vol 4, No 2 (2021): Juli 2021
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jgt.4.2.2021.117-125

Abstract

The shoreface deposits study commonly conducted to characterize the reservoir's physical properties carried out by surface geological data. The physical properties focused on pore space conditions controlled by sedimentary process and tectonic settings in Seulimum Formation. The method used as descriptive analysis and previous study of the area interested. The geological data showed shoreface environmental deposits that can be divided into two types of environmental deposits they are middle shoreface and upper shoreface deposits. These environmental deposits are proven by some features such as bioturbation with an abundant presence of Ophiomorpha in the second stop sites (total 5 stop sites). The first stop site indicates two kinds of environmental deposits by coarse sandstones and mudstones dominated facies presence in the specific beds. Mudclast and hummocky structures also present in the field observation that concludes complex environmental deposits during the quaternary period the formation. Based on characteristics of facies could suggest those sediment products deposited on shallow marine. These wave-dominated coasts generally have an excellent reservoir potential effect on shoreface sands that are laterally continuous and were orientated parallel to the shoreline.
Petrographic study of rocks in The Julu Rayeu Formation and the Center of the Geureundong Volcanic in Nisam District, North Aceh District, Aceh Province Dewi Sartika; Millati Amalia Sentosa; Fahri Adrian; Akmal Muhni; Dina Gunarsih; Hidayat Syah Putra; Rifqan Rifqan
Journal of Aceh Physics Society Volume 12, Number 2, April 2023
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v12i2.30888

Abstract

Abstrak. Berdasarkan kondiri geologi, Kecamatan Nisam berada pada Formasi Julu Rayeu dan Batuan Pusat Gunungapi Geureundong. Litologi yang terdapat pada Formasi Julu Rayeu terdiri atas endapan sungai, batupasir tufaan, lempung berlignit, sedangkan litologi pada Batuan Pusat Gunungapi Geureundong yaitu Breksi Andesit. Metode yang digunakan pada penelitian ini meliputi metode pemetaan geologi dan analisis petrografi. Penelitian ini bertujuan untuk mengetahui kondisi geologi dan komposisi mineral penyusun batuan pada daerah penelitian. Berdasarkan hasil penelitian yang telah dilakukan diperoleh kondisi geologi yaitu litologi terdiri dari 4 satuan batuan meliputi batupasir, batupasir tufaan, batulempung, dan endapan kolovium. Hasil analisis petrografi pada batuan beku menurut klasifikasi IUGS (1973) terdiri dari 4 sampel yaitu AU12, AU41, AU72 dan AU73 disebut Andesit, sedangkan batupasir berdasarkan klasifikasi Pettijohn (1975) terdiri dari dua sampel yaitu AU32 dan AU62 disebut Lithic Greywacke. Abstract. Based on geological conditions, Nisam District is located in the Julu Rayeu Formation and the center of the Geureundong Volcanic. The lithology found in the Julu Rayeu Formation consists of river deposits, tuffaceous sandstones, and lignite clays, while the lithology of the central rocks of the Geureundong volcano is andesite breccia. The methods used in this study include geological mapping methods and petrographic analysis. This study aims to determine the geological conditions and constituent mineral composition of the rock in the study area. Based on the results of the research that has been carried out, the geological conditions are obtained, namely lithology consisting of 3 rock units including sandstone, tuffaceous sandstone, claystone, and colluvium deposits. The results of petrographic analysis on igneous rocks according to the IUGS classification (1973) consist of 4 samples namely AU12, AU41, AU72, and AU73 called Andesite, while sandstones based on Pettijohn’s classification (1975) consist of two samples namely AU32 and AU62 called Lithic Greywacke.
Pemanfaatan Back Up Data Menggunakan Cloud Computing Google Drive untuk Pengarsipan Guru di SMAN 3 Indrapuri, Aceh Besar Dewi Sartika; Zakia Masrurah; Yoessi Oktarini; Akmal Muhni; Dina Gunarsih; Lia Fitria
Jurnal Abdi Masyarakat Indonesia Vol 3 No 5 (2023): JAMSI - September 2023
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jamsi.891

Abstract

Di era digital khususnya revolusi 4.0 memberi kemudahan bagi masyarakat khususnya dunia pendidikan dalam penggunaan teknologi. Salah satunya adalah pemanfaatan back up data menggunakan Cloud Computing Google Drive. Google drive merupakan salah satu media yang dapat dimanfaatkan sebagai akses penyimpanan data berbasis digital sehingga sangat bermanfaat dan memudahkan bagi dunia Pendidikan. Dunia Pendidikan tidak terkecuali SMAN 3 Indrapuri, Aceh Besar mendapati permasalahan terkait penyimpanan data. Selama ini kegiatan penyimpanan data atau dokumen dilakukan secara manual dengan mengumpulkan dokumen maupun data secara hard copy, sehingga muncul permasalahan yakni dokumen yang sulit sekali diakses keberadaan. Kegiatan sosialisasi pemanfaatan penggunaan google drive kepada pelajar dan guru di SMAN 3 Indrapuri, Aceh Besar dilakukan bertujuan untuk dapat memberikan informasi tentang kemudahan teknologi tersebut dan manfaatnya terhadap penyimpanan data maupun dokumen. Agar nantinya para guru dan tenaga kependidikan di SMAN 3 Indrapuri dapat mengetahui kemudahaan penggunaan google drive dalam penyimpanan data secara digital. Kegiatan sosialisasi ini dilakukan menggunakan metode Participatory Rural Appraisal (PRA), dimana dilakukan dengan cara mengajak para peserta kegiatan untuk berpartisipasi dalam proses pengembangan sebuah kegiatan. Dalam hal ini yakni pemanfaatan aplikasi google drive sebagai wadah untuk penyimpanan data secara digital. Hasil yang diharapkan dari kegiatan sosialisasi ini adalah agar menambah pemahaman kepada para guru dan tenaga kependidikan terkait tingkat pemanfaatan google drive di dunia Pendidikan dalam penyimpanan data maupun dokumen secara digital, sehingga nantinya data atau dokumen tersebut dapat dengan mudah diakses keberadaannya.
Geochemical Analysis of Calcareous Shale of Baong Formation (North Sumatera Basin) as Potential Source Rock Putra, Hidayat Syah; Alfian, Zika; Sartika, Dewi; Rifqan, Rifqan; Muhni, Akmal; Adrian, Fahri
Aceh International Journal of Science and Technology Vol 13, No 1 (2024): April 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.1.36962

Abstract

This research is related to calcareous shale whose samples were obtained from surface data (outcrop). This rock outcrop is characterized as a rock rich in organic material and impermeable, so it is predicted to become a source rock of oil and gas petroleum system. The amount of organic content or carbon material and the level of maturity of the rock is a benchmark for determining whether or not it is appropriate to be called a source rock of the petroleum system in the North Sumatra Basin (NSB) area. The method used in the present study is the rock-eval pyrolysis method and the determination of Total Organic Carbon is carried out through laboratory testing. Based on the results of Rock-Eval Pyrolysis testing, the maturity level or Tmax of the rock is 446-degree Celsius which indicates the peak mature category with kerogen type in the form of II/III which tends to produce oil and gas prone. The results of the Total Organic Carbon (TOC) test show a value of 1.26% which is included in the category of organic matter richness in the good category. Based on the results of these two tests, it can be concluded that the Calcareous shale found in the North Sumatra Basin (NSB) can be categorized as a good Source Rock with a Peak Mature maturity level and has the potential to produce Oil and Gas (Mixed oil and gases).
Identifikasi bawah permukaan Komplek Indrapuri menggunakan Metode Magnetik Gunarsih, Dina; Fitria Rahmatillah, Lia; Marvita, Yurda; Muhni, Akmal; Tarmizi, Tarmizi
Phi: Jurnal Pendidikan Fisika dan Terapan Vol 9, No 2 (2023)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/p-jpft.v9i2.17809

Abstract

Daerah Kuta Cot Glie tersusun dari batuan beku dan metamorf yang bermanfaat sebagai bahan galian C maupun potensi keberadaan mineral ekonomis. Tujuan penelitian ini adalah untuk mengidentifikasi batuan di daerah penelitian beserta kedalamannya. Metode yang digunakan adalah metode magnetik yang mengukur medan magnet berasal dari bumi, diurnal, dan anomali magnetik. Untuk mendapatkan anomali magnetik, maka menggunakan koreksi IGRF dan diurnal. Hasil dari penelitian ini adalah kondisi bawah permukaan Kompleks Indrapuri yang terdiri dari serpentinit, batuan peridotit dan sedikit endapan laterit hasil pelapukan batuan ultramafik. Batuan serpentinit memiliki ketebalan mencapai 50 meter dan peridotit dengan ketebalan lebih dari 50 meter.