Sub-Surface Geology and Evolution of the Barind Tract, Bangladesh

Barind Tract is a high-rise terrace of Pleistocene in the northwestern part of Bangladesh (about 11 to 48 m amsl). Earth scientists believe that this phenomenon may have evolved as a result of structural uplift and / or eroded terrain, but no one agrees. This problem represents another problem about the different sizes of groundwater problems in this area. This paper clarifies evolutionary process with the help of underground geology and attempts to provide necessary information on sustainable development in the region. In order to clarify these processes, Pliocene-Pleistocene and Holocene rock formations were constructed by analyzing existing borehole data. In order to distinguish the sedimentary phase from the sedimentary paleoenvironment, lithostratigraphy and geometric analysis have been performed to characterize the sub-environment of the old channel and other rivers. This interpretation shows that a sharp and significant change in thickness of different lithographic units is significantly correlated with the presence and linearity of substrate control defects. The displacement of the rock unit, the undulating nature, the increase in Pleistocene clay thickness in the sedimentary area, and the presence of Barind clay under the recent alluvium in the sedimentary area have contributed to the structural control of the origin of high pressure Barind Tract Respectively. In most stratigraphic sections, the depth and thickness of the lithife unit along the Pleistocene Bahrain and the recent alluvial boundary are changing dramatically, and the overlap between the substrate control fault and the line-to-surface area is clearly defined . The underground surface of the northwestern part of Bangladesh also intersects a series of faults of different sizes and directions. In the basement of this area, the same structure as many h occurred. The Bogra frame and platform area shows a big difference between deposition continuity and thickness. Several sedimentary layers and layers of the Bogra Shelf area are completely missing in the platform area. All of these features and evidence show that not only the origin of geomorphology but also the structure of Barind Tract, which moves up and down in Quaternary block regulation of different parts of the Bengal basin depending on the compensation resulting from the compressive stress of NS and EW Strongly support the origin. . Himalayan uplift

Barind Tract is a relatively high (about 11 - 48 m amsl) triangular wedge shaped land. It is one of many Pleistocene terraces in Bangladesh in the northwest. Physiology has become one of the important information for planning various development activities. In this paper, we will try to draw the topography of Barind Tract and its surrounding area which have characteristics of drainage channel. SPOT panchromatic images and topographic maps are interpreted visually as this research. The area is divided into three major geographic units and 15 sub-units. The main units are Barind Tract, Channel-floodplain complex, and Himalayan piedmont plain (Tista Fan). The elevation of Barind Tract is about 11 - 48 m Amsl, the flood plain is about 8 - 23 m Amsl, and the height of Tista Fan is about 30 - 45 m Amsl. The eastern part of Barind Tract flattened the terrain slope toward the southwest

Barind Tract is the highland terrace of Pleistocene (about 11 - 48 m amsl) in the northwestern part of Bangladesh. Earth scientists believe that this phenomenon may have evolved as a result of structural uplift and / or eroded terrain, but no one agrees. This problem represents another problem about the different sizes of groundwater problems in this area. This paper clarifies evolutionary process with the help of underground geology and attempts to provide necessary information on sustainable development in the region. In order to clarify these processes, Pliocene-Pleistocene and Holocene rock formations were constructed by analyzing existing borehole data. In order to distinguish the sedimentary phase from the sedimentary paleoenvironment, lithostratigraphy and geometric analysis have been performed to characterize the sub-environment of the old channel and other rivers. Structural control representing the origin of the elevated Barind Tract