Geophysics fieldwork 2015 was held in Suwawa Timur, Gorontalo. The fieldwork was followed by students of class '14 (Geospan) at Geological Engineering Major, Earth Science and Technology Department, Universitas Negeri Gorontalo.

Fieldwork includes the identification of subsurface in the fieldwork location using geophysical instrumentation. Students were given the ability to use Resistivity Meter. The acquisition data using Schlumberger Configuration. They also observed the morphology, and stratigraphy in fieldwork location.

This fieldworks are supervised by Intan Noviantari Manyoe, S.Si., MT (Lecturer), and Andri Saputra Jusuf (Assistant).

Data acquisition in the field.

15/16 Gasal was done.

The research aims to assess the geothermal potential and provide a better understanding of the geology and geophysics of the area. The study utilizes various methods, including geological mapping, geochemical analysis, and magnetic and electromagnetic data analysis, to gain insights into the subsurface structures and characteristics of the geothermal system. The study area can be divided into three geomorphological units: Alluvial Plain Unit, Near Plains Unit, and Isolated Hill Unit. The study area exhibits a stratigraphy consisting of three primary units: Talumopatu granite units, Talumopatu sandstone units, and alluvial deposit units. The subsurface lithologies of the Talumopatu manifestation area were analyzed using the Wenner – Alpha configuration ERT method, revealing two distinct lithologies. The first lithology consists of sandstones with a resistivity value ranging from 4.2 to 39.0 ohm.m and a thickness of 1.25 to 12.4 m, which act as a permeable layer capable of transmitting water. The second lithology is granite with a resistivity value ranging from 118 to 360 ohm.m and a thickness of 3.75 to 15.9 m. This information provides valuable insights into the subsurface characteristics of the area, including the presence of permeable layers and the geological composition of the lithologies.

Ayu, D., Arifin, Y. I., Zainuri, A., Manyoe, I. N., & Jahja, M. (2023). Geology and Geophysics of Talumopatu Geothermal Manifestation Area of Mootilango District, Gorontalo Regency, Indonesia. In E3S Web of Conferences (Vol. 400, p. 01013). EDP Sciences.

Indexed in Scopus.

Kegiatan lapangan (sumber: Lia Elviyanti).

Daerah penelitian secara administratif berada di Kecamatan Boliyohuto, Kabupaten Gorontalo, secara fisiografi daerah penelitian berada di lembah paguyaman yang didominasi oleh batuan gunungapi dan endapan danau. Penelitian ini bertujuan untuk mengetahui geologi bawah permukaan daerah Bongonggoayu. Metode yang digunakan dalam penelitian ini menggunakan geolistrik konfigurasi Wenner-Sclumberger. Hasil penelitian geologi bawah permukaan daerah penelitian menggunakan geolistrik Wenner-Schlumberger terbagi atas 4 lintasan berdasarkan pengolahan Res2dinv dan rockword terdapat beberapa lapisan litologi berdasarkan penampang 2D bawah permukaan dimana didominasi oleh lapisan kelompok batupasir, lempung dan pasir kerikil. Kemudian terdapat anomali yang kemungkinan besar pada anomali ini terdapat pengaruh struktur dengan arah barat laut-Tenggara pada lintasan 1 dan lintasan 4.

Elviyanti, L., Maryati, S., & Manyoe, I. N. (2022). Kajian Geologi Bawah Permukaan Daerah Geotermal Bongongoayu, Kecamatan Boliyohuto, Kabupaten Gorontalo, Provinsi Gorontalo. JRST (Jurnal Riset Sains dan Teknologi), 6(2), 125-130. 

Indexed in Sinta, S3.