Relation of Structural Geology to other branches of Geology Structural geology as a discipline is closely related to many other fields of Earth Sciences. STRATIGRAPHY – deals with the succession of rock formation. Y Normal Y Overturned Y

Relation of Structural Geology to other branches of Geology PETROLOGY – the study of rocks. It includes petrography, the systematic description of rocks, shed much light on the structural history of igneous, metamorphic and sedimentary rocks. MINERALOGY – deals with the classification, atomic structure and genesis of minerals.

Relation of Structural Geology to other branches of Geology PALEONTOLOGY – study of the fossils. GEOCHRONOLOGY – deals with the dating of geological events. VOLCANOLOGY – is the study of the volcanoes and volcanic rocks.

Indo-Burma Fold and Thrust Belt -20 km -40 km -60 km -80 km -100 km Continental Indian Plate Oceanic Plate 100 200 300 400 Deformation Front Old Deformation Front Modified from Murphy (1980), Steckler et al (2016) Burma Plate Paleogene Neogene Comilla Dhaka Indo-Burma Fold and Thrust Belt Eocene Shelf Meghna River-Sunamgonj-Kishoregonj Depression Kabaw Fault Kaladan Fault Accretionary Wedge Quaternary locked

Relation of Structural Geology to other branches of Geology GEOMORPHOLOGY – the study of the landforms, their description and interpretation of landmass.

Bengal Basin Indian Platform Foredeep Indo-Burma Fold & Thrust Belt Deformation Front Hinge Zone Kaladan fault Kabaw fault Main Frontal Thrust Indian Craton Shillong Plateau H i m a l a y a Bay of Bengal Sagaing fault Halflong- Old Deformation Front Dauki Fault Dapshi Fault Disang thrust Naga- 46 mm/yr Oblique Subduction Paleogene Neogene Regional tectonic and physiographic setup of Bangladesh and adjoining area.

Landforms: Traditionally the landforms of Bangladesh are divided into three major units. Tertiarry hills of north-east Sylhet, Chittagong and Chittagong Hill tracts –12.6% Pleistocene Uplands- found in the marginal and interior portion of the country –8.3% Holocene plains including Piedmont plains, Flood plains, Deltaic plains, Depressed lands and coastal plains –79.1%

Himalaya Shillong Plateau Assam Valley Indus Valley GBM Delta Indian Shield Indo-Burma Range Shan Plateau Central Burma Basin Bay of Bengal

Bangladesh from Himalaya Shillong Plateau Bangladesh from Himalaya

Himalaya from Tetulia

Brahmaputra & Indo-Gangetic plain from Shillong Plateau

Himalaya Brahmaputra River Shillong Plateau Sylhet

View of Sitakund & Chittagong Hill Tracts from Sandwip Myanmar Hills Halda Valley Chandranath, Sitakund Coastal Plain Sandwip Channel View of Sitakund & Chittagong Hill Tracts from Sandwip

Estuary and Coastal plain from Sitakund Hill, viewing west

Relation of Structural Geology to other branches of Geology GEOPHYSICS – which involves the application of physics to geological problems.

Relation of Structural Geology to other branches of Geology

Relation of Structural Geology to other branches of Geology ENGINEERING GEOLOGY – the application of the knowledge of geology in solving the engineering problems.

Relation of Structural Geology to other branches of Geology Engineering Geology Locality - B Locality - A Untable bank Stable bank

Relation of Structural Geology to other branches of Geology Engineering Geology Deep valley Joint, fault

Relation of Structural Geology to other branches of Geology Engineering Geology Deep valley Joint, fault

Relation of Structural Geology to other branches of Geology ECONOMIC GEOLOGY – deals with the study of useful minerals and rocks and the application of the knowledge of geology in prospecting for these economic deposits and in other practical problems.

Relation of Structural Geology to other branches of Geology