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Pengaruh Lingkungan Pengendapan terhadap Sebaran dan Kualitas Lapisan Batubara di Desa Kalasari, Papua Barat Daya Sinaga, Yosiyan Daniel; Permana, Aang Panji; Kasim, Muh
Journal of Applied Geoscience and Engineering Vol 4, No 2 : Desember 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v4i2.37129

Abstract

This study was conducted in Kalasari Village, Salawati District, Sorong Regency, Southwest Papua, within the Contract of Work area of PT Megapura Prima Industri. The research integrated field geological observations, detailed lithological and outcrop descriptions, drill core logging and correlation, and laboratory proximate analysis to characterize coal occurrence and quality. Stratigraphic analysis indicates that the study area is composed of two principal lithological units: the Sele Claystone Unit, deposited in backswamp to swamp environments, and the Sele Sandstone Unit, representing floodplain facies. Borehole correlation reveals coal seam thicknesses ranging from 0.3 to 1.82 m, with a general westward thickening trend, reflecting microtopographic variation and peat stability during deposition. The roof and floor of the coal seams are dominantly claystone or clayey sandstone, indicating overbank flood sedimentation that facilitated peat preservation. Proximate analysis shows that the coal is low rank, characterized by calorific values of 3220–3619 kcal/kg (adb), low ash content (1.7–3.8%), very low sulfur content (0.2%), and high total moisture (32–37%). These characteristics are typical of freshwater swamp–backswamp facies within an upper delta plain depositional environment with limited clastic input. The relatively thin overburden further constrained coalification, resulting in low calorific values. Overall, the results demonstrate that coal distribution, seam thickness, and coal quality in the study area are strongly controlled by upper delta plain depositional dynamics, particularly swamp and backswamp facies that governed peat accumulation and preservation.
Karakteristik Geomorfologi dan Proses Pembentukannya di Daerah Tilangobula, Kabupaten Bone Bolango Slamet, Slamet; Arifin, Yayu Indriati; Kasim, Muh; Badaru, Alifia Widya Warapsari
Journal of Applied Geoscience and Engineering Vol 4, No 2 : Desember 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v4i2.36988

Abstract

This study examines the geomorphological characteristics of Tilangobula Village in East Suwawa District, Bone Bolango Regency, Gorontalo Province, Indonesia, located within the tectonically active Limboto Zone. Through integrated field observations and geospatial analysis—including topographic maps, slope gradients, and drainage patterns—the research identifies structural hills as the dominant geomorphological unit, covering 2.356 km² with elevations ranging from 200 to 600 meters above sea level. The area exhibits two distinct drainage patterns (parallel and trellis) and variable slope gradients (2–140%). Morphogenetic analysis reveals the landscape has been shaped by both endogenic processes (notably oblique faulting, specifically a Normal Left Slip Fault) and exogenic factors (erosion of diorite and quartz diorite intrusions). The lithology comprises intrusive igneous rocks (diorite and quartz diorite), with structural features such as shear joints and faults further influencing the terrain. The findings highlight the interplay between tectonic forces and surface processes in forming the region’s unique structural hills, characterized by V-shaped valleys and steep slopes. This study provides critical baseline data for understanding understudied tectonic landscapes in eastern Indonesia and supports applications in regional geological research and land-use planning. The results underscore the importance of integrating morphographic, morphometric, and morphogenetic analyses to decipher complex geomorphological evolution in tectonically active regions.
Identifikasi Sebaran Kadar Ni Menggunakan Metode Hand Auger Desa Molino, Kabupaten Morowali Utara, Sulawesi Tengah Al-Fayedh, Moh; Kasim, Muh; Hutagalung, Ronal; Badaru, Alifia Widya Warapsari
Journal of Applied Geoscience and Engineering Vol 4, No 2 : Desember 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v4i2.33756

Abstract

One of the regions in Indonesia with potential laterite nickel deposits is North Morowali, where the MTosu Formation, composed of Cretaceous-aged ultramafic rocks, is found. This study aims to identify the distribution of laterite and nickel content using data from Hand Auger analysis. The methods used include field observations, Hand Auger sampling, and geochemical analysis through X-Ray Fluorescence (XRF). The research area features two main geomorphological units: structural steep hills and structural gentle hills. Its stratigraphy consists of lherzolite and serpentinite units. The dominant geological structure trends northeast-southwest, following a linear pattern. Laterite distribution in the area is controlled by topography. Nickel content is categorized into three zones: high, medium, and low. XRF analysis of Hand Auger samples indicates that high nickel concentrations are located in the southwest and extend northeast across the study area.
PENERAPAN KONSEP ESENSIAL GEOGRAFI PARIWISATA PADA DESTINASI RAJA AMPAT Ridwan, Masri; Musawantoro, Muhammad; Eppang, Buntu Marannu; Sujawoto, Fitra Ananta; Kasim, Muh; Amirullah, Amirullah; Sianipar, Christina Indriani
Jurnal Praksis dan Dedikasi Sosial Vol. 7 No. 1 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

IMPLEMENTATION OF ESSENTIAL CONCEPT OF GEOGRAPHY TOURISMIN RAJA AMPAT, INDONESIA Penelitian ini bertujuan untuk menganalisis ketersediaan konsep esensial sebagai bahan materimata kuliah Geografi Pariwisata melalui pemanfataan Raja Ampat, Provinsi Papua Barat Dayasebagai daerah tujuan wisata. Penelitian ini dioperasikan dengan pendekatan kualitatif, denganwawancara kepada pemandu wisata setempat, survei, dan observasi lokasi geosite serta kajianpustaka. Hasil penelitian diantaranya: 1) konsep lokasi (absolute dan relatif), jarak, pola,keterjangkauan, morfologi, dan keterkaitan ruang, 2) data spasial dengan atribut 29 lokasi geositeserta tiga model pergerakan wisatawan di destinasi Raja Ampat; 3) ketersediaan materi sesuaidengan kebutuhan capaian akhir mahasiswa Jurusan Perjalanan dan Jurusan DestinasiPariwisata di Politeknik Pariwisata Negeri Makassar. Pengembangan buku ajar kontekstualtentang Geografi Pariwisata Raja Ampat direkomensadikan sebagai suplemen buku referensi. This study aims to analyze the availability of essential concepts as materials for TourismGeography courses through the use of Raja Ampat, Southwest Papua Province as a touristdestination. This research was operated with a qualitative approach, with interviews with localtour guides, surveys, and observations of geosite locations and literature review. The results ofthe research include: 1) the concept of location (absolute and relative), distance, pattern,affordability, morphology, and spatial relationships, 2) obtained spatial data with attributes of 29geosite locations and three models of tourist movement in Raja Ampat destinations; 3) availabilityof materials in accordance with the final achievement needs of students of the Department ofTravel and Department of Tourism Destinations at Makassar State Tourism Polytechnic.Developing a contextual textbook on Raja Ampat tourism geography is recommended as areference book supplement.
Co-Authors . Kasmiati . Metusalach Ahdar Ahmad Zainuri Al-Fayedh, Moh Amatihuta, Bili Amirullah -, Amirullah Andi Rani Sahni Putri Aris, Ayub Pratama Arisandi, Defrian Marza Asia, Asia Assagaff, Sayid B. Athirah, Aldila Mawanti Ayu Andaresna Badaru, Alifia Widya Warapsari Bagas Prakoso Buhaerah Damis Damis Debrina Alfitri Kentania Dheni Rossarie Dheni Rossarie Dwi Haryanto Endang - Gunaisah Eppang, Buntu Marannu Fattah, Nurlaeli Fitra Ananta Sujawoto Fitri, Fitri Indah Yani Goa, Yusnita La Hamimu, Moh Febrianto Handayani Handayani - Haruna Haruna Hasan Ikhwani Hehanussa, Kedswin Gerson Hutagalung, Ronal Ikbal Syukroni Ismail Ismail Kalagison, Nataniel Karim, Qadri Katili, Vicky Rizky La Demi, La Demi Lolita Tuhumena Masri Ridwan, Masri Meti Kendek Muh Ishar Difinubun Muhamad Ali Ulat Muhammad Bibin, Muhammad Muhammad Ulat Muhammad, Samsul Muhfizar, Muhfizar Muhtar Muhtar Musawantoro, Muhammad Mustasim, Mustasim Ndahawali, Daniel Heintje Noviar Akase Nurfitri Rahim Nurlaeli Fattah Nurul Huda Nurul Mutmainnah, Nurul Oktovianus Cristian Karubaba Pahrun, Aliim Risky Payapo, Muhammad Z.U. Permana, Aang Panji Poltak, Hendra Pontoh, Peggy Puspitasari, Asthervina Widyastami R. Rusli Rahim, Nurfitri Rahmaniar Rahmaniar Rahmatang Rahmatang Rahmatang, Rahmatang Rahmi Rahmi Ramadhani, Shafira Zulfa Rasdam, Rasdam Relatami, A. N. R. Renitasari, Diana Putri Rifaldi Mokodompit Riki Hermawan Rini Sahni Putri Risfany, Risfany Rossarie, Dheni Ruhimat, Nursultan Akbar Rumaherang, Renaldo Fredly Rumpa, Arham Rusdi, Rismawaty Rusli Sahabuddin Samsul Bachri, Samsul Samual, Siti Hadija Sari, Nindya Duta Sepri Sepri, Sepri Sianipar, Christina Indriani Sinaga, Yosiyan Daniel Slamet . Sosang, Agustinus Sri Wahyuni Firman Suhartono Nurdin Sumarta, Ryan Puby Surianti Surianti Suruwaky, Amir M. Suruwaky, Amir Machmud Suwandi, Joga Bagaswicaksono Syamsuddin, Muhidin Tamaulina Br Sembiring Titasam, Onesimus Tjarles, Lay Tomasila, Leopold A. Tumelap, Irka Priwanda Ula, Khumairotul Ummu Kaltsum SC Warda Susaniati Yani Nurita Purnawanti Yaser Krisnafi, Yaser Yayu Indriati Arifin Yoga Yuniadi Yonathan Aprilio Yunus, Yusdalifa Ekayanti