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All Journal Jurnal GEOSAPTA KURVATEK Journal of Earth and Marine Technology (JEMT)
Fajar Rizki Widiatmoko
Institut Teknologi Adhi Tama Surabaya
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Physics Social Sciences Transportation

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PENGARUH AKTIVITAS PERTAMBANGAN TERHADAP NILAI PRODUK DOMESTIK REGIONAL BRUTO DAN EKONOMI MASYARAKAT DI PROVINSI KALIMANTAN TIMUR Wahyu Endah Christiani Putri; Akhmad Zamroni; Fajar Rizki Widiatmoko
KURVATEK Vol 5 No 2 (2020): November 2020
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v5i2.1854

Abstract

Gross Regional Domestic Product (GRDP) is a macroeconomic indicator of the economic condition in a region. The development of GRDP per capita is often used as an indicator of a region's success in economic development. One of the economic sectors that is an indicator of the success of regional development is the mining and excavation sector. East Kalimantan Province is a province with a wealth of natural resources in the form of coal mining. The purpose of this study is to analyze the effect of mining activities in East Kalimantan on the value of the GRDP and the economic conditions in that region. The results showed that mining activities had a significant effect on the GRDP per Capita and the economic conditions of the people in East Kalimantan Province. GRDP according to mining and excavation fields has an effect of 0.9431 on GDP per capita in East Kalimantan Province. The number 0.9431 in statistics means that the X coefficient has a strong effect on the Y coefficient. All decreases and increases in mining and excavation fields have a significant and proportional effect on the economic conditions of the people in East Kalimantan Province.Keywords: Gross Regional Domestic Product (GRDP), mining, economic conditions, East Kalimantan.
The conceptual model of Wae Sano Geothermal field based on geology and geochemistry data Fajar Rizki Widiatmoko; Mochammad Nur Hadi; Dedi Kusnadi; Sachrul Iswahyudi; Fadlin Fadlin
Journal of Earth and Marine Technology (JEMT) Vol 1, No 1 (2020)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2020.v1i1.1189

Abstract

Wae Sano volcano is included in the inner Banda arc, Mount Wae Sano is a type C volcano and formed the Sano Nggoang crater lake. The magmatism activity produces geothermal manifestations such as; hot spring, rock alteration, and sulfur deposits, the hottest water temperature is 81 0C, with neutral pH, but the Sano Nggoang Lake water has acid pH. It becomes interesting to examine the characteristics of the geothermal system in that area. The research was conducted by Volcanostratigraphic studies to reconstruct the geological process and Geochemical sampling of hot springs, lake water, ground air, and the soil side to understand the subsurface characterization. The result showing some period of volcano products, with the youngest come from the product of Sano Nggoang 2 that spills its product to on the north-east side of Poco Dedeng volcano. The geochemical analysis shows all manifestations originate from one reservoir, chloride water type, NaCl type of the lake water with a few SO4 influence, presumably, the hot springs supply is influenced by seawater, the estimation of the reservoir has a temperature about ± 230 0C, with dacite and the rich organic sedimentary rock, and located at ± 1456 m from the manifestation, the isothermal section shows the rate of temperature increase at 97.07 m / 10 0C. The hypothetical resource is counted about 1,488.6 kWe.
The Relation of Fault Fracture Density with the Residual Gravity; case study in Muria Fajar Rizki Widiatmoko; Ratih Hardini Kusuma Putri; Huzaely Latief Sunan
Journal of Earth and Marine Technology (JEMT) Vol 1, No 2 (2021)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2021.v1i2.1743

Abstract

The usages of the FFD analytical method massively are utilized during the last decade, especially in the geothermal preliminary study that can show the prospect reservoir area. This article discusses the correlation of the FFD value with the residual gravity value that is assumed as an indication of the underneath magmatic body. The correlation of FFD value with residual gravity value is applied in Muria mountain. Muria is classified as the volcano body that contains the magmatic body, also exist Genuk volcano and Patiayam hill around Muria. The correlation shows that FFD value and residual gravity value have a relation, but especially for the uninfluenced by structural activity has a low value of FFD. The correlation of FFD and residual gravity is double-checked with the ground truth data, it showing the proof relation. This way of methodology may use for finding the underneath magmatic body, especially applied to the surface that has not been influenced by structural activity.
Petrografi dan Estimasi Sumberdaya Andesit pada WIUP Eksplorasi Daerah Rajekwesi, Kec. Kendit, Kab. Situbondo, Jawa Timur Fajar Rizki Widiatmoko; Yazid Fanani; Muhammad Agus Irwanto; I Wayan Koko Suryawan; Mega Mutiara Sari; Ratih Hardini Kusuma Putri
Geosapta Vol 8, No 2 (2022): JULI 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v8i2.13438

Abstract

Kabupaten Situbondo memiliki banyak potensi sumber daya batuan, salah satunya adalah sumber daya berupa batuan andesit. Keterdapatan batuan andesit berasal dari produk gunungapi berjenis batuan beku yang terbentuk oleh aktivitas vulkanik intermediet dengan tipe magma andesitic. Penelitian ini dilakukan di wilayah IUP Eksplorasi Daerah Rajekwesi, Kecamatan Kendit, Kabupaten Situbondo untuk mengetahui kondisi geologi, petrografi batuan, dan volume sumberdaya dari batuan andesit yang terdapat dalam WIUP Eksplorasi. Berdasarkan hasil pemetaan geologi dan analisis petrografi menunjukkan bahwa Satuan Lava Kendit di daerah WIUP hadir seluas 100%, merupakan produk lava dari Gunungapi Ringgit, berisi batuan beku andesit dan sedikit tanah sebagai produk ubahan pelapukan dari batuan tersebut. Lebih detail lagi ditunjukkan dari hasil sampel batuan yang dianalisis menggunakan analisis petrografi terdapat kehadiran mineral plagioklas, kuarsa, feldspar dengan total komposisi 60% yang menunjukkan bahwa sampel tersebut berjenis batu andesit. Estimasi volume sumberdaya mengacu pada tiga jenis sumberdaya yaitu tereka, terunjuk, dan terukur. Berdasarkan hasil perhitungan sumberdaya didapatkan volume sumberdaya batu andesit tereka sebesar 267.555.503 Ton, terunjuk sebesar 23.129.687 Ton, dan sumberdaya terukur sebesar 1.227.962 Ton
PETROLOGI DAN ESTIMASI SUMBER DAYA BATUAN TANAH URUG PADA WILAYAH EKSPLORASI DAERAH TAROKAN, KAB. KEDIRI, JAWA TIMUR Fajar Rizki Widiatmoko; Yazid Fanani; Yohanes Jone; Simela Talaohu; Muhammad Agus Irwanto; I Wayan Koko Suryawan; Mega Mutiara Sari; Ratih Hardini Kusuma Putri
KURVATEK Vol 7 No 2 (2022): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v7i2.3160

Abstract

Kediri Regency is a potential area for mining minerals. One of the rock excavation materials found in Kediri Regency is the type of andesite and backfill. Backfill is a mineral as a result of weathering of the parent rock, which is rich in andesite fragments and silica elements. This research was conducted at the exploration location of Tarokan Village, Tarokan District, Kediri Regency. The study was conducted using petrological analysis to obtain rock types and estimates of the availability of these minerals at the research site. Based on the results of petrological analysis, it shows that the sample is a type of backfill and andesite. However, the presence of all samples was dominated by samples of backfill that were present in abundance in as much as 98 % of the total exploration area. Based on the results of the estimation of backfill resources from geological modeling and volumetric calculations from the triangulation concept at an elevation of 110-72 mdpl, the measured resource of the Sandy Tuff unit (TU) has a volume of 2,514,150 m3, based on the results of the analysis of the average rock density of 2.172 g/cm3, the tonnage of the sandy tuff unit is 5,460,734 tons, with the tonnage of backfill from tuff 4,203,659 tons, and andesite tonnage 1,257,075 tons.
Co-Authors Akhmad Zamroni Dedi Kusnadi Fadlin Fadlin Fanani, Yazid Huzaely Latief Sunan Mega Mutiara Sari Mega Mutiara Sari Mochammad Nur Hadi Muhammad Agus Irwanto Muhammad Agus Irwanto Ratih Hardini Kusuma Putri Ratih Hardini Kusuma Putri Sachrul Iswahyudi Simela Talaohu Suryawan, I Wayan Koko Wahyu Endah Christiani Putri Yazid Fanani Yohanes Jone