Geological structure identification in geothermal manifestation of Lamongan Volcano Complex: A magnetic data analysis approach
The Tiris area in the Lamongan Volcano Complex, Probolinggo, East Java, is estimated to be an area with geothermal potential in Indonesia. This is indicated by the existence of several hot springs along the Tancak River, forming a continuous line with a distance about 20-50 m between each h...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Faculty of Mining and Geology, Belgrade
2024-01-01
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| Series: | Geološki Anali Balkanskoga Poluostrva |
| Subjects: | |
| Online Access: | https://doiserbia.nb.rs/img/doi/0350-0608/2024/0350-06082400013U.pdf |
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| Summary: | The Tiris area in the Lamongan Volcano Complex, Probolinggo, East Java, is
estimated to be an area with geothermal potential in Indonesia. This is
indicated by the existence of several hot springs along the Tancak River,
forming a continuous line with a distance about 20-50 m between each hot
spring. Segaran hot springs are one of the hydrothermal manifestations that
can indicate the presence of geothermal potential in this location. Some
previous research has shown the existence of subsurface geological
structures around Segaran hot springs in a northwest-southeast direction.
However, the identification of geo - thermal manifestations in this location
is limited, so magnetic data can help identify subsurface geological
structures to confirm the geo thermal potential in this area. A significant
contrast in horizontal magnetic anomalies indicates the existence of
subsurface geological structures. To delineate the boundaries of the
magnetic anomaly, the first horizontal derivative and second vertical
derivative were applied. To determine the depth of the magnetic anomaly,
located Euler deconvolution was used. The integration of these three
transformations on the magnetic data is sufficient to interpret the
position, direction, and depth of subsurface structures in the research
area. The results show the position of dominant lineament in the Lamongan
Volcano Complex through Segaran hot springs is a northwest-southeast
orientation. These results align with the dominant orientation from the
density lineaments analysis performed based on the Digital Elevation Model
Nasional (DEMNAS). Building from previous research, the existence of fault
structures correlated with Segaranhot springs can improve the indication of
geothermal potential in the Lamongan Volcano Complex, especially in the
Tiris area. |
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| ISSN: | 0350-0608 2406-0747 |