...U. K. Mishra; K. Shankar; R. S. Patil Abstract The lithounits of post Kopili sediments constitute the Simsang, Baghmara, Chengapara and Dupitila formations in that order of sequence. Based on the present study five biostratigraphic zones have been recognised in these rock stratigraphic units...

... seismic reflection data. Our result suggests that the synkinematic packages correspond to the Pliocene Tipam Group and the Pleistocene Dupitila Formation. This implies that the structural development in the western Chittagong Tripura Fold Belt took place from the Pliocene. In the Hatia Trough, the timing...

...' o ! SCALE 10 I 1:3 I 20 Fig ,I. A. GEOLOGICAL MAP 01 THE AREA, Fig .1.8. GEOLOGICAL MAP OF THE AREA ( AFTER AOC, \941) I N DE)( I AFTER AUTHORS 1 ~ DUPITILA FORMATION ill] TlPAM SANOSTONE F( RMATION. I!!1 BOlFORMATION Q!!l UPPER 8HU8AN FOR ATION . ~ [TIJ MIDDLE LOWER BHUSAN BHUBAN FOR IUTION...

... to other sandstones. The lithostratigraphic succession of the Fenchuganj structure has been prepared on the basis of well data. The sequence encountered in the study area ranges in age from middle Pliocene to Oligocene. The Barail, Bhuban, Bokabil, Tipam and Dupitila formations were delineated...

... sandy aquifer unit (composite and main aquifer) representing the Dupitila sandstone formation of Pliocene age and the bottom clay-shale sequence of the preDupitila age-. The nature and distribution of aquifer and aquitard in the geologic section of the study area are markedly controlled by the lithology...

... terrain of small hills and hillocks of various elevations ranging from 100' to 250'. The oldest exposed rock in this structure is DupiTila Formation (BAPEX, 2005). Fig.1. Location map of the study area (BAPEX, 2005). The objective of the present study is to interpret the structure...

... Formation of Middle Miocene age. The geological model envisaged has further led to the delineation of supra and lateral diapiric traps in the overlying Upper Bhuban and Bokabil Formations of Mio-Pliocene age. The reconstruction of structural evolution has brought out a phase of inversion during Plio...

.... and Singh , L.B. ( 1980 ) Depositional Sedimentary Environments , 2nd Edition , Springer-Verlag, Berlin , Hedidelberg, New York , 549 p. Roy , M.K. , Karmakar , B.C. , Saha , S. and Chandhuri , S. ( 2004 ) Facies and Depositional Environment of the Dupitila Formation...

...: the top clay and silt of Pleistocene age, the middle sandy aquifer unit (composite and main aquifer) representing the Dupitila sandstonc formation of Pliocene age and the bottom clay shale sequcnce of Pre- Dupitila age. The specific yield of unconsolidated sediments depends on texture and its variations...

... anticline and core samples from A thick sequence of Neogene section is Patharia-5 exploratory well drilled in the struc- exposed in the Patharia structure. This com- turerepresentingtheBhuban,BokabilandTipa~n prises from top to bottom the Dupitila Forma- Formations of Neogene age, i) documents the tion...

...Kashyap Borgohain; Ranjan Kumar Sarmah ABSTRACT The petrography of sandstone, major oxides, trace and REE compositions of the Bhuban formation, exposed in the Sakhan Anticline of Tripura Frontal Fold Belt have been studied to determine the source rock, depositional tectonic setup...

... Formation Thickness (m) Interval (m) Pleistocene to Recent Tipam Quaternary 191 0-191 Plio-Pleistocene Dupitila 749 191-940 Mio-Pliocene Girujan Clay 170 940-1110 Tipam 340 1110-1450 Miocene Surma Boka Bil 1102 1450-2552 Upper Bhuban 2552-3656 (Base not found...

... (the youngest) ( GSI, 1998 ). Geologically the hills consist of Tertiary rocks formed by the tectonic movement that caused the substratum to rise up during the upliftment of the Himalayas during the Eocene period ( GSI, 2011 ). Tipam and Dupitila are the two sedimentary rock formations found here lying one...

... setting ; Jour. Sedim. Res. , v. 74 ( 2 ), pp. 285 – 297 . Baruah , M. and Pandey , N. (2019) Lithofacies, architectural elements and tectonic provenance of Mio – Pliocene Dupitila Formation in the Cachar Thrust Fold Belt, Northeast India . SN Appli. Sci. , v. 1 ( 3 ), 274, pp. 1 – 16...

...Kashyap Borgohain; Ranjan Kumar Sarmah Abstract The sandstones of the Bhuban Formation (Miocene) exposed in the Jampui hills of Tripura Fold Belt, India has been studied for provenance, tectonic setting and paleoclimate using the petrography, heavy mineral assemblage and clay mineral studies...

... ). Age Group Litho-formations Recent-Pleistocene Dihing Outer and Intermediate Hills Alluvium and high-level terraces Boulder beds Eastern High Hills - - - - - - - - - - - - - - - - - - - - - - Unconformity - - - - - - - - - - - - - - - - - - - - - - Mio-Pliocene DupiTila Namsang...

... ) and Ibs-von Seht and Wohlenberg (1999 ). Lachet and Bard (1994 ) conducted a study utilizing six basic subsurface formations and a combination of contrast variations in wave velocity and ground layer thickness, demonstrating the relationship between the dominant frequency and geological...

... at the beginning of the oil window are caused by low geothermal gradient and shortage of geological time. The study of deep catagenetic zonation of OM of rocks with relation to vertical zonality of hydrocarbon formation has enabled distinguishing three hydrocarbon generation zones in the sedimentary cover...