Stratigraphic and Structural Analysis of the Jaintia-Jaflong Monocline: Insights from Field Investigations
Journal Title: Acadlore Transactions on Geosciences - Year 2024, Vol 3, Issue 2
Abstract
The Jaintiapur-Jaflong region, strategically positioned between the subsiding Surma Basin to the south and the uplifting Shillong Massif to the north, presents a unique geological setting. This study employed geological clinometers and other field methods to ascertain the geological characteristics of the area. The regional strike was determined to be N66˚W, with a dip direction of S24˚W and a dip angle of 42.25˚. Through extensive field investigations, including geological mapping, stratigraphic logging, rock sampling, fossil analysis, and structural analysis, complemented by Global Positioning System (GPS), photography, remote sensing, and Geographic Information System (GIS) technologies, seven lithostratigraphic units were identified. These include the variegated color sandstone, mottled clay, yellowish to reddish-grey sandstone, sandy shale with intercalated silty shale, pinkish sandstone, bluish to blackish-grey shale, and limestone units, corresponding sequentially to Dupi Tila, Girujan Clay, Tipam Sandstone, Surma Group, Jenum Shale Fm, Kopili Shale, and Sylhet Limestone Fm, respectively. Five critical geological contact boundaries were delineated, with notable boundaries identified at the Dupigaon-Sari River Section, the Lalakhal-Tetulghat Section, the Nayagang-Gourishankar Section, and between the Barail and Jaintia groups at the Tamabil-Jaflong Highway Road Cut Section. These findings elucidate the geological contacts and stratigraphic units, providing significant implications for paleoenvironmental reconstruction, resource potential assessment, and stratigraphic correlation, thus enhancing the understanding of regional geological history and laying a foundation for future research endeavors.
Authors and Affiliations
Md. Masum Billah
Identification of Areas with Significant Flood Risks in Counties along the Danube River in Serbia and Their Risk Assessment
For countries along the Danube River, their sustainable economic and social development needs the optimum water utilization of both the Danube and its tributaries. In the context of climate change, the risks of floods an...
Simulation of Flood Hazard Risk for Naban Reservoir Safety Management: A Comprehensive Assessment
Safety of reservoir dams remains pivotal for societal stability, underscoring the significance of efficient emergency management strategies. This investigation focuses on Naban Reservoir, where the BREACH model was emplo...
Assessing the Seismic Resilience of a Reinforced Concrete Bridge in Sibu, Sarawak: A Finite Element Analysis Approach
In the realm of civil engineering and structural analysis, the seismic resilience of infrastructure remains a critical area of research. This study delineates the seismic response assessment of a reinforced concrete brid...
Advancements in Sustainable Membrane Technologies for Enhanced Remediation and Wastewater Treatment: A Comprehensive Review
The review provides a comprehensive overview of the application of membrane technology in addressing the challenges associated with water pollution and waste management. Membrane technology is a process used in various f...
Decadal Dynamics of Jamuna Riverbank Erosion and Its Impact on Local Livelihoods in Shariakandi, Bangladesh
Over a thirty-year period (1990-2020), the spatiotemporal changes in riverbank erosion and accretion along the Jamuna River in Shariakandi Upazila, Bogura District, Bangladesh, were investigated using Landsat satellite i...