Karakterisasi Fasies Hidrokimia Airtanah untuk Identifikasi Aliran Airtanah Geosite Danau Rayo, Musi Rawas Utara Sumatera Selatan
DOI:
https://doi.org/10.30872/jtgeo.v8i2.22930Abstract
Danau Rayo di Kabupaten Musi Rawas Utara merupakan calon geosite yang memiliki morfologi melingkar dan sistem hidrogeologi yang unik. Penelitian ini bertujuan untuk identifikasi zonasi fasies hidrokimia airtanah yang dapat digunakan untuk memahami pola aliran dan proses geokimia yang berlangsung. Metode yang digunakan terdiri atas pengambilan sampel airtanah dan permukaan secara purposif, analisis ion utama, konversi konsentrasi serta validasi keseimbangan dengan Charge Balance Error (CBE). Data tervalidasi tersebut digunakan untuk visualisasi fasies dengan Diagram Piper dan Stiff sehingga diperoleh zonasi hidrogeokimia. Hasil penelitian menunjukkan bahwa seluruh sampel memiliki CBE dalam batas toleransi yang terdiri atas tiga zona yaitu zona stagnan (BR1-BR5), zona discharge (AS1 dan AS2) serta zona transisi (BR6). Distribusi fasies ini mencerminkan proses pelarutan karbonat dan silikat, pencampuran airtanah dan air permukaan serta pengaruh litologi dan waktu tinggal air. Hasil analisa fasies ini memberikan dasar ilmiah untuk pengelolaan geoheritage dan konservasi sumberdaya air berbasis zonasi fasies.
References
Appelo, C., & Postma, D. (2005). Geochemistry, groundwater and pollution. (2. edition, Ed.) CRC Press.
Barkah, A. (2021). Identifikasi zona recharge dan discharge airtanah menggunakan pendekatan geokimia. Jurnal Geosains Indonesia, 9(2), 45-56.
Brillyanto, A., Wibisana, M., Siregar , T., & Wilopo, W. (2024). Identification of shallow groundwater facies and flow patterns in Batang Regency, Central Java, Indonesia. IOP Conference Series: Earth and Environmental Science, 1378(1). doi:https://doi.org/10.1088/1755-1315/1378/1/012022
Chabi, B., Alassane, A., Kpegli, K., Lawson, F., Zakari, A., Koukpohounsi, B., . . . Boukari, M. (2023). Characterising groundwater and surface water interconnections using hydrogeology, hydrochemistry and stable isotopes in the Ouémé Delta, southern Benin. Hydrogeology Journal, 31, 1229-1243. doi:https://doi.org/10.1007/s10040-023-02645-2
Fudali, R., Milton, D., Fredriksson, K., & Dube, A. (1980). Morphology of Lonar Crater, India: Comparison and Implication. The Moon and the Planets, 23, 493-515.
Hem, J. (1985). Study and interpretation of the chemical characteristics of natural water (3rd edition ed.). Charlottesville, VA: U.S. Government Printing Office.
Hendrayana, H., Thin, P., Wilopo, W., & Kawasaki, S. (2020). Control of aquifer weathering degree to the groundwater chemical composition in Wates Coastal Aquifer, Yogyakarta, Indonesia. E3S Web of Conferences, 200. doi:https://doi.org/10.1051/e3sconf/202020002005
Holdt, K., Cantarella, V., Buchner, D., Leven, C., Mellage, A., Cirpka, O., & Duda, J. P. (025). Facies and depositional environments of a Holocene floodplain: Implications for modeling biogeochemical reactions in aquifers. Hydrogeology Journal. doi:https://doi.org/10.1007/s10040-025-02928-w
Mussa, K., & Mjemah, I. (2023). Using hydrogeochemical facies and signatures for groundwater characterization and evolution assessment in aquifers with contrasting climate and geology in Tanzania. Applied Water Science, 13(201). doi:https://doi.org/10.1007/s13201-023-01977-4
Piper, A. (1944). A graphic procedure in the geochemical interpretation of water analyses. Transactions of the American Geophysical Union, 25, 914-928.
Sari, M., Setiawan, B., & Idarwati. (2024). Danau Rayo from a geoscience perspective: Is it a product of a meteor crater? IOP Conf. Series: Earth and Environmental Science, 1424.
Setiawan, T., Syah Alam, B., Haryono, E., & Hendarmawan. (2020). Hydrochemical and environmental isotopes analysis for characterizing a complex karst hydrogeological system of the Watuputih area, Rembang, Central Java, Indonesia. Hydrogeology Journal, 28, 1635-1659. doi:https://doi.org/10.1007/s10040-020-02128-8
Stiff, H. (1951). The interpretation of chemical water analysis by means of patterns. Journal of Petroleum Technology, 3(10), 15-17.
Todd, D., & Mays, L. (2015). Groundwater Hydrology (3rd edition). Wiley.
Downloads
Published
Issue
Section
License
Copyright Notice
Authors who publish in Jurnal Teknik Geologi: Jurnal Ilmu Pengetahuan dan Teknologi agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under an Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
