Earth, Atmosphere & Environment Sciences
Title : | Provenance and depositional environment of Yinkiong Group of Eastern Himalayas, Arunachal Pradesh and its relationship with Abor volcanics, with special emphasis on chemostratigraphy and economic prospects |
Area of research : | Earth, Atmosphere & Environment Sciences |
Focus area : | Geology |
Principal Investigator : | Dr. Ananya Chutia, Cotton University, Guwahati, Assam |
Timeline Start Year : | 2023 |
Timeline End Year : | 2026 |
Contact info : | ananyachutia@gmail.com |
Details
Executive Summary : | The Yinkiong Group of eastern Himalaya, Arunachal Pradesh is an important component of the Himalayan Paleogene sequences. Like the western and central Himalayan counterparts, this group also bears the records of Himalayan orogenesis. The proposed study aims at to unfold the evidences of this significant geological event recorded in these rocks. The group comprises continental Geku (Late Paleocene to Early Eocene) and marine Dalbuing Formation (Early to Mid Eocene). This group also includes the Abor volcanics, which occur within the Geku Formation. The relationship between the Yinkiong Group and Abor volcanics is not apparent from the previous studies and this study will also give emphasis on establishing the stratigraphic position of these rock units. Paleogene sedimentary records have a great significance of bearing evidences of Eocene thermal maximum and the last oceanic anoxic event. Chemostratigraphy has become an important tool in understanding such climatic and oceanographic events. Such study has not yet been reported in the proposed study area. The will incorporate oxygen, carbon and strontium isotopes for deciphering the deposoitional history. Another important aspect of the proposed work is the study of the economic prospect of this group which will incorporate trace element concentration (with special emphasis on vanadium) and hydrocarbon source rock potential analyses. The objectives of the proposed study are interpretation of the provenance and depositional history of Yinkiong sediments and its relationship with Abor volcanics. Also, it will include the determination of the heavy metal concentration and source rock potential of the shales of this group. The proposed study will help in interpreting the depositional history of the Yinkiong Group as well as the oceanographic and climatic conditions during their deposition. The existing knowledge on the environmental aspects of this group is mainly field and fossil based. This study will apply advanced techniques, including chemostratigraphy, which will definitely unravel many important facts of the eastern Himalayan Paleogene sequences. It will also indicate their economic prospect. The methodology which will be adopted for the proposed study will include field and laboratory investigation. Laboratory investigations will include petrography, geochemistry, clay mineralogy, chemostratigraphy and rock-eval pyrolysis. The proposed study will bring new insight into the existing knowledge of the Palaeogene sequences of the eastern Himalaya. Chemostratigraphy will throw light on the oceanographic and climatic conditions during their deposition. The result of the trace metal concentration study and the source rock potential analysis will give a clear picture of the economic aspect of these rocks. Thus, the proposed study's outcome will benefit academia and industry, which will be disseminated by communicating to peer-reviewed journals and presenting at conferences and seminars. |
Co-PI: | Dr. Chaitra Dhar Taye, Jagannath Barooah College (Autonomous), Jorhat, Assam-785001 |
Total Budget (INR): | 26,84,000 |
Organizations involved