Geomorfologi Daerah Mananggu dan Sekitarnya, Kecamatan Mananggu, Kabupaten Boalemo, Provinsi Gorontalo

Muhammad Ridho Kayambo, Yayu Arifin, Noviar Akase, Djamal Adi Nugroho Uno

Abstract


This research was conducted in the Mananggu area and its surroundings, Mananggu District, Boalemo Regency, Gorontalo Province. The study aims to map the geological conditions and identify the characteristics of geomorphology and geological structures developed in the area. The methods employed included surface geological mapping for field data collection, followed by laboratory analyses. Geomorphologically, the research area is divided into two units: the Volcanic Hills Unit and the Structural Hills Unit. The stratigraphy consists of the Eocene-Oligocene Porphyritic Andesite Unit (Tinombo Formation) and the Pliocene Granite Unit (Bumbulan Granodiorite Formation) acting as an intrusive body. The geological structures are controlled by a transtensional regime resulting from compression, manifested as NW-SE shear joints, right normal slip faults, and normal right slip faults. The landscape evolution is strongly influenced by the interplay between the resistance of the igneous lithologies and the active tectonic deformation that shapes the drainage patterns and slope configurations.


Keywords


Geology; Geomorphology; Mananggu; Structural Control; Transtensional Regime

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References


Bachri, S., Sukido, & Ratman, N. (1993). Peta Geologi Lembar Tilamuta, Sulawesi. Bandung: Pusat Survei Geologi.

Bemmelen, R. W. van. (1949). The Geology of Indonesia. The Hague: Government Printing Office.

Burbank, D. W., & Anderson, R. S. (2011). Tectonic Geomorphology (2nd ed.). Chichester: Wiley-Blackwell. https://doi.org/10.1002/9781444345063

Goudie, A. S. (2013). The Human Impact on the Natural Environment: Past, Present, and Future (7th ed.). Oxford: Wiley-Blackwell.

Hall, R., & Wilson, M. E. J. (2000). Neogene sutures in eastern Indonesia. Journal of Asian Earth Sciences, 18(6), 781–808. https://doi.org/10.1016/S1367-9120(00)00040-7

Howard, A. D. (1967). Drainage analysis in geologic interpretation: A summation. AAPG Bulletin, 51(11), 2246–2259. https://doi.org/10.1306/5D25C26D-16C1-11D7-8645000102C1865D

Huggett, R. J. (2017). Fundamentals of Geomorphology (4th ed.). London: Routledge. https://doi.org/10.4324/9781315640211

Pasau, G., & Tanauma, A. (2011). Pemodelan sumber gempa di wilayah Sulawesi Utara sebagai upaya mitigasi bencana gempa bumi. Jurnal Ilmiah Sains, 11(2), 202–209. https://doi.org/10.35799/jis.11.2.2011.208

Rauf, J., Arifin, Y. I., & Akase, N. (2024). Geomorfologi Daerah Tambang Emas Rakyat Juriya dan Sekitarnya, Kecamatan Bilato, Kabupaten Gorontalo. Journal of Applied Geoscience and Engineering, 3(2), 136–149. https://doi.org/10.34312/jage.v3i2.30322

Simandjuntak, T. O. (1992). Tectonics and Resources of the Layout of the Eastern Part of Sulawesi. Bandung: Geological Research and Development Centre.

Smyth, H. R., Hall, R., & Nichols, G. J. (2008). Cenozoic volcanic arc history of East Java, Indonesia: The stratigraphic record of eruptions on an active continental margin. Special Paper of the Geological Society of America, 436, 199–222. https://doi.org/10.1130/2008.2436(10

Summerfield, M. A. (1991). Global Geomorphology. London: Longman Scientific & Technical.

Van Zuidam, R. A. (1985). Aerial Photo-Interpretation in Terrain Analysis and Geomorphologic Mapping. Enschede: ITC.

Verstappen, H. T. (2010). Indonesian landforms and plate tectonics. Indonesian Journal of Geography, 26(1), 1–14. https://doi.org/10.22146/ijg.2147




DOI: https://doi.org/10.37905/jrpi.v3i1.36273

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