Deep geological structure of An Chau trough base on new study data

  • Affiliations:

    PVEP Songhong, Hanoi, Vietnam

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  • Received: 4th-Aug-2022
  • Revised: 9th-Nov-2022
  • Accepted: 11st-Dec-2022
  • Online: 1st-Feb-2023
Pages: 95 - 104
Views: 2989
Downloads: 12
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Abstract:

An Chau trough with an area of ​​​​about 10,000 km2 located in the Northeast of Vietnam is the southwest tail of the Mesozoic Thap Van Dai Son basin and has a complex geological structure. The geological structure of An Chau trough has been studied since the 70s of the last century, however, previous studies were mainly surface geological studies. Deep structure studies only based on measurement gravity data at the scale of 1/200.000 with outdated machinery, equipment and processing technology. With the goal of re-searching, investigating and surveying oil and gas resources, from 2013 to 2017, Vietnam National Oil and Gas Group has deployed measuring over 9,000 km of the Airbone high-resolution Mag-Gravity survey with the resolution of measuring points on the measure-line from 6 m to 7 m/point, more than 450 ground gravimetric points and acquiring over 1,000 km 2D seismic survey. All magnetic-gravity and seismic data collected in the field is then processed at processing centers with modern technology such as Sander Geophysics - Canada, Institute of Geophysics - VAST, CGG Veritas Singapore. The results of interpretation and integration of these new documents together with the previous geological documents have initially allowed to identify and construct a deep geological model of An Chau trough. The results of this study will help clarify the history of geological development of the study area based on evidences that can only be observed on seismic data. Inaddition, these results also help to make orientation for explorating mineral resources in general and oil and gas resources in particular.

How to Cite
Hoang, H.Huu, Nguyen, T.Van, Nguyen, N.Huu, Le, V.Tuan and Pham, H.Trung 2023. Deep geological structure of An Chau trough base on new study data. Journal of Mining and Earth Sciences. 64, 1 (Feb, 2023), 95-104. DOI:https://doi.org/10.46326/JMES.2023.64(1).10.
References

Doan, K. T. (2000). Geological and mineral resources map of Vietnam on 1:200.000 – Langson sheet. Department of Geology and Minerals of Vietnam. Hanoi.

Li, J., Zhao, G., Johnston, S. T., Dong, S., Zhang, Y., Xin, Y.,... and Yu, Y. (2017). Permo-Triassic structural evolution of the Shiwandashan and Youjiang structural belts, South China. Journal of Structural Geology, 100, 24-44.

Liang[D2] , X. Q., and Li, X. H. (2005). Late Permian to Middle Triassic sedimentary records in Shiwandashan basin: implication for the Indosinian Yunkai orogenic belt, South China. Sedimentary Geology177(3-4), 297-320.

Hoang, N. K. (1999). Geological and mineral resources map of Vietnam on 1:200.000 – Haiphong sheet. Department of Geology and Minerals of Vietnam. Hanoi.

Hoang, V. L. (2015). Tectonic deformation of An Chau basin: Evidence for overthrusting during Indosinian orogeny. Journal of Oil and Gas 8, Petrovietnam, 22-26 (in Vietnamese).

Nguyen, Q. H. (1971). Report on making structure of An Chau trough area at scale 1: 200,000. Petroleum Archive Center-Vietnam Petroleum Institute. Hanoi (in Vietnamese).

Nguyen, C. L. (1999). Geological and mineral resources map of Vietnam on 1:200.000 – Hongai sheet. Department of Geology and Minerals of Vietnam. Hanoi.

Nguyen, C. L. (2000). Geological and mineral resources map of Vietnam on 1:200.000 – Mongcai sheet. Department of Geology and Minerals of Vietnam. Hanoi.

Nguyen, H. (1970). Report on gravity research in An Chau trough area. Petroleum Archive Center-Vietnam Petroleum Institute. Hanoi (in Vietnamese).

Ngo, T. S. (1970). Report on geological structure and oil and gas potential in An Chau trough area. Petroleum Archive Center-Vietnam Petroleum Institute. Hanoi (in Vietnamese).

PVEP Songhong. (2014). Report on the results of interpretation of the Airbone Magnetic-Gravity data, phase I, An Chau project. Petroleum Archive Center-Vietnam Petroleum Institute. Hanoi (in Vietnamese).

PVEP Songhong. (2018). Report on the results of interpretation of Magnetic-Gravity data, phase II, An Chau project. Petroleum Archive Center-Vietnam Petroleum Institute. Hanoi (in Vietnamese).

PVEP Songhong. (2014). Report on sumerizes the result of Phase I, An Chau Project and plan for further exploration. Petroleum Archive Center-Vietnam Petroleum Institute. Hanoi (in Vietnamese).

PVEP Songhong. (2019). Report on sumerizes the result of Phase II, An Chau Project and plan for further exploration. Petroleum Archive Center-Vietnam Petroleum Institute. Hanoi (in Vietnamese).

Tran, D. L.,and Nguyen, X. B. (1982). Geological map of Vietnam on 1:500.000. Department of Geology and Minerals of Vietnam. Hanoi.

Vu, T. (2012). Report on summarizes the results of geological-geophysical research and proposes plan to study pre-tertiary basins for oil and gas exploration. Petroleum Archive Center-Vietnam Petroleum Institute. Hanoi (in Vietnamese).