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All Journal Jurnal RISET Geologi dan Pertambangan JGE (Jurnal Geofisika Eksplorasi) Journal of the Civil Engineering Forum JIPF (Jurnal Ilmu Pendidikan Fisika) Journal of Environment and Sustainability Jurnal Mineral, Energi dan Lingkungan Angkasa: Jurnal Ilmiah Bidang Teknologi KURVATEK Jurnal Mineral, Energi dan Lingkungan International Journal of Hydrological and Environmental for Sustainability Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Kemitraan, Kewirausahaan dan Pengabdian Masyarakat
Al Hussein Flowers Rizqi
Institut Teknologi Nasional Yogyakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering 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 Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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KARAKTERISTIK MIKROSTRUKTUR ZONA HANCURAN DAN INTI SESAR BERDASARKAN ANALISIS PETROGRAFI PADA LITOLOGI SKIS, BAWAK, BAYAT KABUPATEN KLATEN PROVINSI JAWA TENGAH Awaluddin, muhamad Hasyim; Rizqi, Al Hussein Flowers
Retii 2025: Prosiding Seminar Nasional ReTII ke-20 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Daerah Bayat, Kabupaten Klaten, Jawa Tengah, merupakan wilayah dengan singkapan batuan metamorf yang mengalami pembekuan intensif akibat aktivitas tektonik. Penelitian ini bertujuan untuk mengidentifikasi karakteristik mikrotektonik pada zona hancuran (zona kerusakan) dan zona inti (zona inti) menggunakan analisis petrografi pada litologi sekis. Metode penelitian meliputi pengamatan lapangan, pengambilan sampel, serta analisis mikroskopis sayatan tipis untuk memahami mikrostruktur dan orientasi mineral. Hasil pengamatan menunjukkan bahwa litologi pada daerah penelitian terdiri dari sekis grafit dan sekis mika dengan struktur foliasi schistose dan tekstur kristaloblastik. Zona inti sesar memiliki mineral mika yang tersusun sejajar dan memanjang satu arah akibat pengaruh tegangan utama (σ₁), sedangkan zona hancuran menampilkan orientasi mineral yang acak dan belum menunjukkan penjajaran sempurna. Arah foliasi dominan pada zona hancuran yaitu N 335°E–N 155°E dengan arah gaya baratlaut–tenggara, sedangkan pada zona inti sesar N 290°E–N 110°E dengan arah gaya baratlaut–tenggara. Perbedaan orientasi dan tekstur mineral mencerminkan variasi intensitas di antara kedua zona tersebut. Secara keseluruhan, penelitian ini menampilkan bahwa mikrotektonik pada batuan metamorf Bayat merekam arah tegangan regional serta memberikan pemahaman terhadap evolusi tektonik di Jawa bagian selatan.
THE EFFECT OF INTRUSION ON THE PHYSICAL AND CHEMICAL PROPERTIES OF COAL Ogara, Evan Rosyadi; Tri Wahyuni; Al Hussein Flowers Rizqi
JGE (Jurnal Geofisika Eksplorasi) Vol. 11 No. 3 (2025)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v11i3.495

Abstract

Coal is a deposit of organic matter derived from plant remains that have undergone diagenesis process to form a coal seams. This study aims to determine the impact of intrusion on the physical and chemical characteristics of coal. The location of this research is in the Air Laya mining area, PT Bukit Asam Tbk, Tanjung Enim, South Sumatra and is part of the South Sumatra Basin which is well known as one of the coal bearing formation areas. Four (4) coal samples were analysed including proximate analysis, total sulphur content, and calorific value to measure moisture content, volatile matter, fixed carbon, ash content, and calorific value of the coal. Petrology and well log analysis was used to determine lithology and regression analysis was used to assess the effect of intrusion on coal characteristics. The results of the coal analysis in the research area reveal significant differences between coal samples located near the intrusion and those farther away. Coal located near the intrusion exhibits black colour, vitreous and conchoidal fracture. In contrast, coal farther from the intrusion shows a dull, blackish-brown, brownish streak, and uneven fracture. Coal near the intrusion shows lower moisture (1.5–1.7%) and volatile matter (17–25%), but higher ash content (7.9–8.2%), fixed carbon (67–73%), calorific value (7700–7968 kcal/kg), and sulphur (0.7–0.8%). In the other hand, coal farther from the intrusion has higher moisture and volatile matter, but lower fixed carbon, calorific value, and sulphur. The findings conclude that proximity to intrusion increases fixed carbon and calorific value but also raises sulphur levels, which may pose environmental and operational concerns.
Co-Authors Abdillah Ahmad, Ghani Afri Tri Kristanto Ahmad, Ghani Abdillah Alansyah, Apriko Yudhan Aprilia, Adinda Arimurti, Dyah Arum Audrey, Vivi Fistina Awaluddin, muhamad Hasyim Bernadeta Subandini Astuti Delvina Syaifira Norma Hani Desie Kurnia Gae Diyoko, Diyoko Elkawi Hawinu, Nodyka Erlandi, Muhammad Fajar, Ari FATIMAH FATIMAH Fatimah Fatimah Febri Anggara Fistina Audrey, Vivi Garnis Wanengcio Uligawati Gil Lodar, Jaden Gracia Apriyani Naibobe Hafidz Sedek Haliza, Audia Shafa Hendri Tri Purnomo Herning Dyah Kusuma Wijayanti Hill Gendoet Hartono Hill Geondoet Hartono Hita Pandita Hita Pandita Ibnu Hibban, Muhammad Iqbal Hidayat Lindung Zalbuin Mase Maming, Haryadi Maurittius Antonius Talla Lamak Mayang Pitaloka Muh Gifaricandrabayu Muhammad Abdul Basith Muhammad Arifai Muhammad Dandy Fachrindra Muhammad Isna Almuzakki Nadhip, Muhammad Nadip, Muhammad Noviardi Noviardi Ogara, Evan Rosyadi Oky Sugarbo Praba Padma Arsyada Qodri, Muhammad Fatih Qoyyibi, Dava Saliham Radhitya, Berwyn Dzaky Rajawali Yudha Pratama Ramadhan, Dimas Rean Devindra Reditya Galang Pamungkas Reynaldo Adhiechandra S reza_krisnandi reza krisnandi Rizqi Prastowo Rusmania Ramadhani, Saviola SANDI KURNIAWAN Setyo Pambudi Sukartono Syamsul Arifin Tedja Trisnaning, Paramitha Tengku Riza Zarzani N Thabita Monica Tupang, Kannaya Timotius Tuska, Robert Tiurma Dewi, Alexandra Sekar Tri Wahyuni Vico Luthfi Ipmawan Vilman Sidik Waskita Bambang Murti Yudhana Waskita Murti Bambang Yudhana Waskita Murti Bambang Yudhana Waskita Wibisono, Dharmawan Catur Wijaya, Naufal Arya Winarti Winarti Winarti Yudhana, Waskita Murti Bambang