06 Apr 2022 — Organised by APG NE Chapter Jorhat
Workshop on Recent Fulvial Sedimentation Processes River Brahmaputr View Details
Secretary
91 - 9445005032
| Post | Name | Email Id | Mobile No. |
|---|---|---|---|
| Regional Vice Presidents | Ms. Sushma Rawat | RAWAT_SUSHMA@ongc.co.in | 9410930544 |
| Regional Secretary | Mr. Vikas Kumar Singh | singh2_vikas@ongc.co.in | 9410397054 |
| Regional Treasurer | Ms. Richa Chauhan | chauhan_richa@ongc.co.in | - |
APG Jorhat Chapter in association with A&AA Basin organized a maiden one day geological field excursion along Mariani-Mokukchung Traverse in Nagaland on 6th February 2022.
Flagging off for the excursion group, ED-BM & VP APG Jorhat Chapter Ms. Sushma Rawat highlighted the hydrocarbon prospectivity of Naga schuppen belt and enthused participants to derive maximum knowledge from the rich experiences of ONGC stalwart Shri Satyajit Choudhuri, Ex. GGM-Basin Manager and Shri Aben Lotha, Director, Geology & Mines, Nagaland who had kindly consented to be the Field Guides for the day.
Mariani-Mokukchung traverse cut across the Naga Schuppen Belt, outer belt of imbricate anastomising thrusts with the number of thrust slices overriding each other. In Mariani- Mokukchung Traverse from foreland to hinterland; southeast hading northeast-southwest oriented Naga, Changpang/Lakhuni, Cholimsen, Kongan and Disang Thrusts are encountered thereby exposing various formations like Disang, Barail, Surma, Tipam, Girujan and Namsang sediments to the shallower levels.
During the course of traverse, thrust propagated anticlinal structures like Bandersulia and Chungtia, associated with Naga and Lakhuni Thrust, respectively were studied. Exposures featuring coarse to medium grained cross bedded Tipam Sandstone, Mottled Girujan Claystone, thick gritty to coarse grained Namsang Sandstone, Interbedded Sandstone and Shales of Surma Formation and thin to thickly bedded Barail Sandstone with shales and coal seams were studied.
The field excursion group consisted of 35 members’ majorly young geologists, geophysicists and reservoir engineers of A&AA Basin & Jorhat Asset. The one day traverse along Mariani-Mokukchung greatly benefited them as they were entrusted to various nuances of field geology i.e. analyzing the outcrop by observing and collecting the structural, stratigraphic and sedimentological data. The program concluded with a brief felicitation of the faculties followed by vote of thanks to Patron and President-APG India for support and necessary approvals and to all the participants by APG Jorhat Chapter.
APG Jorhat Chapter organised a Technical talk titled “Geo-electrical Crustal configuration along some profiles in NE Indian region” under its “Distinguished Faculty lecture series” on 30th November at 1st Floor conference hall, Luit Bhwan, ONGC Jorhat in hybrid mode. The talk was delivered by Prof. Devesh Walia, Head, Dept. of Geology & CEO, Incubation centre, North-Eeastern Hill University (NEHU) Shillong.
The session commenced with the formal welcome of Prof Walia by Ms. Sushma Rawat, Vice-President APG, Jorhat Chapter. In opening remarks by Dr. Vikas K Singh, Secretary, APG Jorhat Chapter highlighted the unique challenges in determining basement configuration in NE region due to huge sedimentary thickness and complex geology and also the importance of non-seismic methods in deciphering the tectonically complex set-up.
Ms. Sushma Rawat, Vice-President APG, Jorhat Chapter welcomed Prof. Walia, APG members and geoscientists present at forum and emphasised on APG Jorhat chapter’s role to cater the requirement of geoscientist working in foreland and fold belt of A&AA Basin by enhancing their knowledge through such platform by inviting various subject matter experts.
Prof. Devesh Walia is an expert in structure and tectonics of NE Indian region, he has made significant contributaion in magnetotellurics, radon emanation studies, micro-seismology, global positioning system, seismic disaster management and mitigation; earthquake forecasting, Remote sensing and GIS and he is actively engaged in teaching, research and consultancy for over past 30 years.
Prof Walia presented the basic tectonic history of Indian plate, current status of plate movements using GPS ground stations, importance of deep crustal studies in understanding the tectonic movements, thus deciphering the active faults and identifying the locales of high stress build-up for earthquake forecasting. He also highlighted recent international studies to understand crustal shortening in southern Tibetan region adjoining India.
He explained the basics of Magneto-telluric study, methodology, history and its utilization in deep crustal imaging in very lucid and interactive way. He deliberated on recent MT surveys in 3 sectors in NE India viz. Darrang-Dawki section in Assam-Meghalaya, over the Lushai fold belt, Surma Basin, Indo-Myanmar Orogen (Tripura & Mizoram) and Eastern Himalayan Syntaxis zone (EHS) in Arunachal Pradesh and their implication in analysing the geo-tectonic evolution of the NE Indian region. Prof. Walia also emphasized on the Industry-Academia collaboration in order to validate the results of various MT surveys through the sub-surface data acquired by industries in the NE region.
Ms. Sushma Rawat in her concluding remarks thanked Prof. Walia for his very informative presentation and for sharing his findings. She also expressed her confidence in APG to keep collaborating with academia for such in-depth discussions and deliberations to enhance our understanding of geological set up of NE India. She also expressed her desire for future collaboration with Prof. Walia for Geological field trips for geo-scientists in NE region.
Manmohan Sharma
Jt. Secy, APG Jorhat Chapter presented Vote of Thanks.