Papers by Md Sahed Aktar Rodro
The Jaintiapur and adjoining areas of Sylhet district, northeastern part of Bangladesh, exhibit d... more The Jaintiapur and adjoining areas of Sylhet district, northeastern part of Bangladesh, exhibit diverse lithological assemblages and complex structural features influenced by Indo-Burma tectonics. The area is part of Sylhet Trough, a sub basin of the Bengal Basin and covered by Cenozoic sedimentary succession. Field investigations, lithological characteristics, stratigraphic correlation, stratigraphic logging, structural features, cross section and mapping of study area and grain size analyses were conducted to interpret the geological framework and depositional history of the region. The stratigraphic succession comprises of Unit-A (Limestone), Unit-B (Black Shale), Unit-C (Pinkish Sandstone), Unit-D (Silty Shale), UnitE (Sandstone-Shale alternation), Unit-F (Yellowish Brown Sandstone), Unit-G (Mottled Clay), Unit-H (Variegated colored Sandstone) and Unit-I (Matrix supported Gravel Bed), recording transitions from shallow marine to alluvial fan depositional environments. Structural analyses identified monoclinal fold, faults, joints, unconformity and fractures indicative of active tectonic deformation. Petrographic results provide insights into provenance, diagenetic processes, transportation mode of sediments, energy condition and reservoir potential. Economic considerations include hydrocarbon source rock, petroleum reservoir rock, groundwater resources, construction materials, and hydrocarbon-bearing structural formations. The study refines the regional geological understanding and offers a baseline for future exploration and sustainable resource management in the Sylhet Basin.
Geological Field Report on Bandarban Hill Range
A geologic field indicates a specific location or area in which geologists make observations, col... more A geologic field indicates a specific location or area in which geologists make observations, collect data, and do research to study the Earth’s geological features like faults, folds, joints, processes, and history.
This geologic field study provides a noticeable examination of the geological features and processes observed at the “Bandarban Anticline.” In the six days of extensive field observations, data collection, analysis and various methodology was applied to have a geological overview of the entire region to gain insights into the geological history and characteristics of this area. ‘Bandarban’ is located between 21°11' and 22°22' north latitudes and in between 92°04' and 92°41' east longitudes. It is trending in the NNW-SSE direction. In this geologic field works which features that we observed and plotted those structures and other data on our base map.
The primary investigative techniques are traversing & spot location, and the tools employed in these techniques include Basemap, clinometer, hammer, GPS, and others in the field as well as lab analysis following fieldwork. The primary factors that determine rock types are lithology and sedimentary structure, and as a result, formation.
We observed three types of sedimentary rock. They are sandstone, sandstone-shale alternation, and shale. We made observations of the exposed part and plotted them into five units based on major sedimentary rock type. We named those units as unit A (Variegated Color Sandstone), unit B (Yellowish Brown Sandstone), unit C1 (Sandstone Shale Alternation), unit C2 (Dark Gray Silty Shale), and unit C3 (Very Fine-grained Sandstone). They On the basis of their overall lithology, these formations are correlated with the Assam basin. They are also about equal in age, approximately the Miocene to the Pleistocene.
We have noticed many kinds of sedimentary structures, like lamination, nodular, flaser bedding, lenticular bedding, micro cross lamination, planner lamination, wavy bedding, tabular cross bedding, trough cross bedding, and massive structures, during our fieldwork. These types of structures were developed in shallow marine to fluvial and deltaic conditions. We observed some microfolds, faults, and some joints. We found the presence of fossils and bioturbations. But we didn’t find any unconformity as well as any igneous or metamorphic rock sample.
The following factors were taken into consideration when creating this report: physiography, sieving, stratigraphy, structural analysis, sedimentology, depositional environment, and economic consideration.
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Papers by Md Sahed Aktar Rodro
This geologic field study provides a noticeable examination of the geological features and processes observed at the “Bandarban Anticline.” In the six days of extensive field observations, data collection, analysis and various methodology was applied to have a geological overview of the entire region to gain insights into the geological history and characteristics of this area. ‘Bandarban’ is located between 21°11' and 22°22' north latitudes and in between 92°04' and 92°41' east longitudes. It is trending in the NNW-SSE direction. In this geologic field works which features that we observed and plotted those structures and other data on our base map.
The primary investigative techniques are traversing & spot location, and the tools employed in these techniques include Basemap, clinometer, hammer, GPS, and others in the field as well as lab analysis following fieldwork. The primary factors that determine rock types are lithology and sedimentary structure, and as a result, formation.
We observed three types of sedimentary rock. They are sandstone, sandstone-shale alternation, and shale. We made observations of the exposed part and plotted them into five units based on major sedimentary rock type. We named those units as unit A (Variegated Color Sandstone), unit B (Yellowish Brown Sandstone), unit C1 (Sandstone Shale Alternation), unit C2 (Dark Gray Silty Shale), and unit C3 (Very Fine-grained Sandstone). They On the basis of their overall lithology, these formations are correlated with the Assam basin. They are also about equal in age, approximately the Miocene to the Pleistocene.
We have noticed many kinds of sedimentary structures, like lamination, nodular, flaser bedding, lenticular bedding, micro cross lamination, planner lamination, wavy bedding, tabular cross bedding, trough cross bedding, and massive structures, during our fieldwork. These types of structures were developed in shallow marine to fluvial and deltaic conditions. We observed some microfolds, faults, and some joints. We found the presence of fossils and bioturbations. But we didn’t find any unconformity as well as any igneous or metamorphic rock sample.
The following factors were taken into consideration when creating this report: physiography, sieving, stratigraphy, structural analysis, sedimentology, depositional environment, and economic consideration.