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Prasetyawati Umar, Emi
Universitas Muslim Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Transportation Other

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STUDI PROVENANCE BATUPASIR FORMASI KAMPUNGBARU, KOTA BALIKPAPAN BERDASARKAN ANALISIS GEOKIMIA ., Jamaluddin; Suprastiwara, Khrisko; Umar, Emi Prasetyawati; Ryka, Hamriani; Putri, Efrina Chandra Agusti
JURNAL TEKNIK GEOLOGI : Jurnal Ilmu Pengetahuan dan Teknologi Vol 8, No 1 (2025): Jurnal Teknik Geologi : Ilmu Pengetahuan dan Teknologi
Publisher : Teknik Geologi Fakultas Teknik Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtgeo.v8i1.19680

Abstract

Formasi Kampungbaru di wilayah Balikpapan, Kalimantan Timur merupakan satuan batuan sedimen yang didominasi oleh batupasir dan memiliki potensi geologi yang signifikan. Studi terhadap batupasir dari formasi ini penting untuk memahami asal usul material penyusunnya serta dinamika geologi yang berperan dalam proses sedimentasinya melalui pendekatan geokimia yang dapat mengidentifikasi komposisi kimia dan lingkungan tektonik asal dari sedimen. Sebelas sampel batupasir diambil dari lokasi terpilih di lapangan dan dianalisis dengan menggunakan portable XRF analyzer untuk menentukan kandungan unsur utamanya. Hasil analisis menunjukkan bahwa batupasir Formasi Kampungbaru didominasi oleh kandungan SiO₂ yang tinggi dan Al₂O₃ yang sedang dengan rasio Al₂O₃/SiO₂ yang rendah hingga menengah serta kandungan Fe₂O₃ + MgO yang relatif tinggi yang mengindikasikan bahwa material penyusun batupasir kemungkinan besar berasal dari batuan vulkanik atau beku mafik yang terbentuk pada lingkungan busur samudra atau margin kontinental aktif. Keberadaan wacke dan arkose yang dominan menandakan batupasir ini terendapkan dalam lingkungan dengan energi yang bervariasi, mulai dari laut dalam hingga area dekat sumber granitik. Selaras dengan sejarah geologi Kalimantan bagian timur yang pernah mengalami aktivitas magmatik subduksi pada zaman Tersier. Proses ini kemudian menghasilkan sedimen yang terbawa ke arah timur melalui sistem sungai dan diendapkan dalam lingkungan delta dan laut dangkal membentuk Formasi Kampungbaru. Dengan demikian, batupasir pada Formasi Kampungbaru mencerminkan provenance campuran antara continental block dan recycled orogen.
Analysis of Reservoir Temperature Estimation using Major Elements in Sulili Geothermal Field, South Sulawesi, Indonesia: Implications for Geothermal Energy Forecasts Umar, Emi Prasetyawati; Wakila, Hardin; Aulia, Rizky Nurul; Pongkessu, Agriani; Nompo, Supardin; Jamaluddin, Jamaluddin
International Journal of Hydrological and Environmental for Sustainability Vol 4, No 1 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i1.568

Abstract

Geothermal is a natural resource energy in the form of hot water or steam that forms in reservoirs within the earth through the heating of subsurface water by hot igneous rocks. Based on field surveys, the Sulili area shows characteristics of geothermal energy in the form of hot springs. The research aims to use the Na-K geothermometer to find out the temperature of the geothermal reservoir below the ground and the Na-K-Mg geothermometer to look into the type of fluid that is in the geothermal reservoir. The research employs the geochemical analysis method in conjunction with the Na-K geothermometer method. Reservoir subsurface temperature is estimated at EPU station 1 at 326.504°C, EPU station 2 at 473.369°C, and station EPU 3 at 456.508°C. According to the results, the hot springs at the three sites are chlorides with temperatures below ground that are part of the high-temperature geothermal system and are 225°C. The hot spring is in the immature water group. Based on the calculation, the Sulili Geothermal Field with an average reservoir temperature of 418°C is approximately 68.33 MWh. This is a simplified calculation, and actual energy output can vary based on several factors, including the specific characteristics of the geothermal reservoir and the efficiency of the power plant.
Geochemical and Mineralogical Insights into Hydrothermal Alteration in the Beruang Kanan Non-Vulcanic Area, Central Kalimantan, Indonesia Anjarwati, Retno; Sutarto, Sutarto; Yudiantoro, Dwi Fitri; Idrus, Arifudin; Umar, Emi Prasetyawati
International Journal of Hydrological and Environmental for Sustainability Vol 4, No 2 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i2.767

Abstract

Previous studies have revealed significant hydrothermal alterations within the Beruang Kanan Non-Volcanic Area, Central Kalimantan, Indonesia, resulting in extensive ore mineralizations. This study aims to examine the effects of hydrothermal processes on rock alteration, delineate alteration zones, and establish their relationship to metal mineralization. The research area, situated in the Tumbang Miri district of Gunung Mas regency, forms part of the Corrugated Hills Geomorphological Unit and is traversed by the Schwaner Mountains, with elevations ranging from approximately 50 to 400 meters. Stratigraphic analysis identifies three primary rock units, ordered from oldest to youngest: the Tuffaceous Sandstone Unit, the Dacitic Tuff Unit, and the Andesite Unit. Hydrothermal alterations have resulted in three distinct alteration zones sericitic, argillic, and propylitic characterized by secondary mineral assemblages. This study provides a comprehensive framework for understanding the geological and mineralization dynamics of non-volcanic hydrothermal systems in Central Kalimantan, Indonesia
ANALISIS FLUIDA DAN PEMANFAATAN MATA AIR PANAS DAERAH SULILI KABUPATEN PINRANG PROVINSI SULAWESI-SELATAN Umar, Emi Prasetyawati; Nawir, Alfian; Husain, Jamal Rauf; Tamar, Khadijah Rezkiani; Maria, Maria; Jamaluddin, Jamaluddin; Wakila, Muhamad Hardin
Jurnal Geosaintek Vol. 6 No. 3 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

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Abstract

The research area shows that geothermal manifestations are in the form of hot springs, and analysis of the hot water springs fluid is very important for more utilization. The aim of this study is to analyze the physical property of the hot water springs, hot spring fluid conditions, to find out the benefit of the hot water springs in the research areas. The method used is the analysis of physical properties of value of pH, smell, taste, temperature, colour, H2S as sulfide, TDS (Total Dissolved Solid) and DHL (Electrical Conductivity). The results showed that the characteristic of the hot water springs are shows the colored water of Sulili nodes with the results from laboratory analysis get 4-23 TCU, sulfur-smelling, taste brackish, surface temperature of 45°C-57ºC, pH relatively neutral-alkaline (7.8-7.9), 1.85-2.13g/L TDS shows springs the heat belongs to brackish water and non karbonat hardness water, the turbidity of 0.95-6.04 NTU and DHL i.e. 4.23-4.52 mS/cm. The average pH value of hot springs is that it has a neutral-alkaline pH, identifier i.e. hot spring low temperature water which is dominated by water. The benefits of hot springs the area of research in the field of tourism as a place of hot water bath, health and as a field studies centre.
ANALISIS HIDROKIMIA DALAM PENENTUAN TIPE DAN GOLONGAN FLUIDA GEOTERMAL SULILI KABUPATEN PINRANG SULAWESI-SELATAN Umar, Emi Prasetyawati; Wakila, Muhamad Hardin; Husain, Jamal Rauf; Jamaluddin, Jamaluddin; Syamsuddin, Syamsuddin; Aulia, Rizky Nurul
Jurnal Geosaintek Vol. 8 No. 3 (2022)
Publisher : Institut Teknologi Sepuluh Nopember

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Abstract

Field surveys in the Sulili Region show geothermal characteristics in the form of manifestations, namely hot water springs. This study aims to determine the type of geothermal fluid in the study area based on the Na-K-Mg geothermometer method and then classify it based on trilinear and ternary diagrams. The results showed that the types of hot springs from the three hot springs in the study area were included in the chloride type with a percentage between 96.209% -96.651% which was plotted on the trilinear diagram. Based on the ternary diagram plotting, the geothermal fluid in the study area belongs to the immature water group. Based on the results of the study it can be concluded that the type of hot water springs in the study area is chloride with one of the hot springs included in the immature water group, namely EPU-1 hot water spring station, while two hot water spring stations, such as EPU-2 and EPU-3 stations cannot plotted due to the high levels of Mg at that station.
Co-Authors Agriani Pongkessu Agus Ardianto Budiman Agustin, Friska Alam Budiman Thamsi Alfian Nawir Alfian Nawir Alfian Nawir Alfian Nawir Alfian Nawir Alfian Nawir Alimuddin . Andi Fadli Heriansyah Andriansyah, Rian Anggun Farwati Abdullah Anjarwati, Retno Anshariah Anshariah Anshariah Anshariah Anshariah, Anshariah Arief Nashrullah Arif Nurwaskito Arif Nurwaskito Arif Wijaya Arifin, Mubdiana Arifudin Idrus Aryadi Nurfalaq Aryadi Nurfalaq Aulia, Rizky Nurul Bakri, Hasbi Bakri, Suriyanto Dirgahayu Lantara Djamaluddin Djamaluddin Dwi Fitri Yudiantoro Egi Rianto Pradana Fauzul Chaidir A. Usman Firdaus F Habibie Anwar Hariani M. Pakka Harwan Harwan Hasbi Bakri Idris Juradi, Muhammad Intan Noviantari Manyoe Ivan Taslim Jamal Rauf Husain Jamal Rauf Husain Jamal Rauf Husain Jamal Rauf Husain Jamaluddin . Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Jamaluddin Joemsittiprasert, Watcharin Khadijah Rezkiani Tamar La Ode Muh Yazid Amsah M. Rezky Agung Setiawan Maria . Maria Maria Maria Maria Maria Maria Marnas, Muhammad Adam Minarti Minarti Muhammad Adam Marnas Muhammad Adam Marnas Muhammad Altin Massinai Muhammad Fawzy Ismullah Massinai Muhammad Nur Alim Muhardi Mustafa Nawir, Alfian Nofrohu Retongga Nompo, Supardin Nurfalaq, Aryadi Nurhajidah Muhsin Nurhawaisyah, Sitti Ratmi Nurliah Jafar Pongkessu, Agriani Pratono, Landy Putri, Efrina Chandra Agusti Rahma Hi Manrulu, Rahma Hi Ratna Sari Madusila Rizky Nurul Aulia Ryka, Hamriani Septian Tri Nugraha Siti Suhartini Napu Sitti Muharni Sri Widodo Sri Widodo Suprastiwara, Khrisko Sutarto Sutarto Syamsuddin Syamsuddin Syamsuddin Syamsuddin Tamar, Khadijah Rezkiani Tappa, Nurfadhilah Sam Tedy Harianto Salama Wa Ode Emiria Srikandi Ndangi Wakila, Muhammad Hardin Yasin Septian