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All Journal KURVATEK Journal of Applied Geology Geosfera: Jurnal Penelitian Geografi JAGE
Samodra, Saptono Budi
Teknik Geologi, Fakultas Teknik, Universitas Gadjah Mada
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Social Sciences

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 1 
EVOLUSI GEOMORFIK MATAROMBEO: DARI CEKUNGAN MESOZOIKUM MENJADI PEGUNUNGAN HOLOSEN Saptono Budi samodro
KURVATEK Vol 1 No 1 (2016): April 2016
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v1i1.215

Abstract

Pegunungan Matarombeo merupakan salah satu pegunungan di lengan Tenggara Pulau Sulawesi, dibatasi oleh Sesar Matano di bagian utara dan Sesar Lawanopo di bagian Baratdaya – Selatan  yang menghasilkan struktur geologi yang sangat kompleks. Penelitian ini bertujuan  melakukan kajian geologi, berupa pengamatan morfologi, stratigrafi dan struktur geologi untuk mengetahui evolusi geomorfik yang bekerja di Pegunungan Matarombeo. Metode yang dilakukan adalah  interpretasi terhadap citra ifsar, pengamatan geologi lapangan, dilanjutkan dengan pengamatan petrografi, paleontologi, dan analisis struktur geologi. Berdasarkan kajian stratigrafi, terutama lingkungan pengendapan batuan serta digabungkan dengan hasil analisis struktur geologi dan evolusi tektonik yang terjadi, diperkirakan evolusi geomorfik di daerah Matarombeo diawali pada masa Mesozoik berupa cekungan dasar laut hingga sekarang menjadi pegunungan.
GEORADAR INVESTIGATION AT THE KEDULAN TEMPLE EXCAVATION SITE, KALASAN, YOGYAKARTA Salahuddin Husein; Saptono Budi Samodra; Subagyo Pramumijoyo; Wahyu Astuti
Journal of Applied Geology Vol 2, No 1 (2010)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2649.483 KB) | DOI: 10.22146/jag.7234

Abstract

Kedulan Site is the buried and ruined 9th century Mataram Hindu Kingdom temple, located in Tirtomartani Village, Kalasan District, Sleman Regency, Yogyakarta Special Province. This temple was incidentally discovered by sand diggers on 24 November 1993 under several meter thick of fluvio-volcanic deposit of the modern Merapi. Several technical studies were needed to carefully excavate the temple, including geology and geophysical approaches. One of the geophysical method have been applied was ground penetration radar (georadar). This method uses radar technology to obtain a continuous profile of the shallow sub-surface and thus allows scientists to image soil substratums based on differing dielectric constants. Georadar investigation by Department of Geological Engineering, Faculty of Engineering, Universitas Gadjah Mada, was conducted on 4 December 2007. The main purpose was to identify the location of the outer stone fence as an estimation to define the temple site area to be excavated. About one line was chosen to cross the site in north-south direction in a distance of 328 m. Two runs were completed on the same line but different courses, i.e. forward and backward, where one was checked with another. The result indicates the presence of the outer stone fence was possibly buried in a depth of 7 m. It was located about 40 m distance outside the inner stone fence. Assuming the fences were quadrangle relative to the main temple, hence it is estimated that the site area to be excavated is about 13.830 m² and total 96.808 m³ gravels and sands to be removed.
Investigasi Bawah Permukaan Pada Area Kawah Sikidang, Dieng, Jawa Tengah Menggunakan Metode Geolistrik Wiyuda, Muhammad Aji; Samodra, Saptono Budi; Utami, Pri
Journal of Applied Geoscience and Engineering Vol 1, No 2 : December 2022
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1214.539 KB) | DOI: 10.34312/jage.v1i2.17343

Abstract

Sikidang crater geothermal manifestation area is located in Dieng geothermal field, Banjarnegara, Central Java Province, Indonesia. In 2019 more than 400,000 people visited Sikidang Crater tourism area. Some of the surface manifestation in this area include fumaroles, mud pools, steaming grounds, and altered ground. This research aim is to identify hydrothermal fluid below the surface and estimate the area of conductive zone using resistivity model from geoelectric data (dipole-dipole and Schlumberger configuration), surface temperature measurements, dan geological observation.Based on the results of 1D and 2D resistivity model, the low resistivity anomaly is thought to be a hydrothermal fluid that associated with surface geothermal manifestations appearence. The low resistivity anomaly also assumed to be associated with altered rocks in the study area, while the high resistivity anomaly is thought to be Pangonan andesitic lava with resistivity value above 1500 Ω.m. Several conductive zone dominantly identified in the Kawah Sikidang tourism area, however conductive zone also identified outside the tourism area.
Sebaran Batuan Karbonat Di Cekungan Matarombeo, Lengan Tenggara Sulawesi Samodra, Saptono Budi; surjono, sugeng sapto
Geosfera: Jurnal Penelitian Geografi Vol 3, No 2 (2024): Geosfera: Jurnal Penelitian Geografi
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/geojpg.v3i2.29077

Abstract

Carbonate rocks, especially reef, are an exploration target for sedimentary basins that are still beginning to be explored. In the Matarombeo Basin, there are 5 rock formations composed of carbonate rocks, namely the Tokala Formation, Matano Formation, Tampakura Formation, Eomoiko Formation and Buara Formation. The aims of this research are to determine the distribution of the five carbonate rock formations and their potential as hydrocarbon reservoirs in the study area.. The data used is data from surface geological investigations and seismic data. From the analysis results it is known that carbonate rocks from the Tampakura Formation and the Eomoiko Formation can function as the main reservoir in the Matarombeo Basin. This is based on the physical properties of the rock which has fairly good porosity and permeability, and can be easily recognized in seismic sections as reef growth. The existence of reefs that grow at heights and are connected to the interior which can function as a kitchen area causes the limestone of the Tampakura Formation and the Eomoiko Formation to become the main reservoir targets in the Matarombeo Basin.
Co-Authors Astuti, Wahyu Pri Utami Salahuddin Husein Salahuddin Husein Subagyo Pramumijoyo Subagyo Pramumijoyo, Subagyo Sugeng Sapto Surjono Wahyu Astuti Wiyuda, Muhammad Aji