Electronic Theses and Dissertation

Secara geografis lokasi penelitian terletak pada koordinat 4°21’14,40”- 4°18’14,40”LU dan 97°9’14,40”- 97°11’38,40”BT, berada pada izin usaha pertambangan PT. Linge Mineral Resources yang berlokasi di Kecamatan Linge Kabupaten Aceh Tengah, Provinsi Aceh lokasi penelitian terdiri dari Formasi Rampong (Tlr) yang tersusun dari batulumpur dan batulumpur silisifikasi serta Formasi Brawan (Tlvbr) yang terdiri dari litologi berupa andesit porfiri dan diorit. Ruang lingkup penelitan meliputi kajian mengenai kondisi geologi permukaan dan studi mengenai pemodelan dan sebaran Rock Quality Designation (RQD) menggunakan data RQD bawah permukaan menggunakan fungsi RBF (Radial Basis Function). yang diperoleh dari data pemboran yang mana bertujuan agar dapat memberikan visual terkait sebaran nilai RQD dibawah permukaan. Tahapan dalam penelitian terdiri dari tahap persiapan, tahap pengambilan data, tahap pengolahan dan analisis data serta tahap penyusunan laporan akhir. Pemetaan geologi dilakukan untuk pengambilan data langsung di lapangan. Kemudian dilakukan analisis petrologi dan petrografi yang bertujuan untuk mengetahui komposisi mineral yang ada pada batuan. Hasil yang diperoleh dari penelitian ini yaitu kondisi geomorfologi terdiri atas satuan bentuklahan Fluvial (F1), satuan bentuklahan Struktural (S1), satuan bentuklahan Sruktural (S3), Satuan bentuklahan denudasional (D3). Hasil interpretasi dari Scanline dan Logging geologi serta identifikasi nilai RQD dari logging geotek untuk didapati perbandingan rata-rata nilai RQD batugamping diatas permukaan yakni 91%, dan dibawah permukaan yakni 91%, perbandingan rata-rata nilai RQD batulumpur Silisifikasi diatas permukaan yakni 85%, dan dibawah permukaan yakni 90%, perbandingan rata-rata nilai RQD batulumpur yakni, diatas permukaan yakni 77%, dan dibawah permukaan yakni 77%. Hasil temuan ini diharapkan dapat menjadi referensi yang komprehensif dan bermanfaat bagi kegiatan eksplorasi serta eksploitasi lanjutan, khususnya yang berkaitan dengan aspek geologi keteknikan yang signifikan bagi pemanfaatan sumber daya mineral khususnya emas di wilayah ujung barat Indonesia. Informasi yang diperoleh dapat mendukung perencanaan, pengambilan keputusan teknis, serta mitigasi risiko geologi pada pengembangan infrastruktur dan pemanfaatan sumber daya alam di kawasan tersebut.

Geographically, the research location is located at coordinates 4°21'14,40"- 4°18'14,40"LU and 97°9'14,40"- 97°11'38,40"BT, located on the mining business license of PT. Linge Mineral Resources which is located in Linge District Central Aceh Regency, Aceh Province the research location consists of the Rampong Formation (Tlr) which is composed of mudstone and silified mudstone and the Brawan Formation (Tlvbr) which consists of lithology in the form of andesite porphyry and diorite. The scope of the research includes the study of the surface geological condition and the study of the modeling and distribution of Rock Quality Designation (RQD) using subsurface RQD data using the RBF (Radial Base Function) function. which is obtained from drilling data which aims to provide a visual related to the distribution of RQD values below the surface. The stages in the research consist of the preparation stage, the data collection stage, the data processing and analysis stage, and the final report preparation stage. Geological mapping is carried out for direct data collection in the field. Then a petrology and petrography analysis was carried out which aimed to find out the composition of minerals in the rocks. The results obtained from this study are that geomorphological conditions consist of Fluvial landform units (F1), Structural landform units (S1), Structural landform units (S3), Denudational landform units (D3). The results of the interpretation of Scanline and Geological Logging as well as the identification of the RQD value from geotech logging to obtain the average comparison of the RQD value of limestone above the surface which is 91%, and below the surface which is 91%, the average comparison of the RQD value of Silisification mud above the surface is 85%, and below the surface which is 90%, the average comparison of the RQD value of the limestone is, above the surface is 77%, and below the surface which is 77%. The results of this finding are expected to be a comprehensive and useful reference for exploration and advanced exploitation activities, especially those related to significant technical geological aspects for the utilization of mineral resources, especially gold in the westernmost region of Indonesia. The information obtained can support planning, technical decision making, and geological risk mitigation in infrastructure development and utilization of natural resources in the area.