Structural characteristics and evolution of the Fairway Basin

Wei Kejia; Song Lijun; Wang Xianhui; Ji Ting

doi:10.3969/j.issn.0253-4193.2020.07.012

Volume 42 Issue 7

Nov. 2020

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Wei Kejia，Song Lijun，Wang Xianhui, et al. Structural characteristics and evolution of the Fairway Basin [J]. Haiyang Xuebao，2020, 42(7)：139–146 doi: 10.3969/j.issn.0253-4193.2020.07.012

Citation:

Wei Kejia，Song Lijun，Wang Xianhui, et al. Structural characteristics and evolution of the Fairway Basin [J]. Haiyang Xuebao，2020, 42(7)：139–146 doi: 10.3969/j.issn.0253-4193.2020.07.012

Citation:

Wei Kejia，Song Lijun，Wang Xianhui, et al. Structural characteristics and evolution of the Fairway Basin [J]. Haiyang Xuebao，2020, 42(7)：139–146 doi: 10.3969/j.issn.0253-4193.2020.07.012

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Structural characteristics and evolution of the Fairway Basin

doi: 10.3969/j.issn.0253-4193.2020.07.012

School of Geosciences and Engineering, Xi'an Shiyou University, Xi'an 710065, China

Received Date: 2019-07-10
Rev Recd Date: 2019-12-30

Available Online: 2020-11-18

Publish Date: 2020-07-25

Abstract

Abstract

The Fairway Basin is located on the eastern side of the Lord Howe Ridge in the southwestern Pacific Ocean and on the west side of the New Caledonia. It is the frontier of global oil and gas exploration. However, the current research on the tectonic evolution of the basin is still weak, which limits the further exploration and development on the oil and gas resources in the basin. A large amount of geophysical data from the Tasman Sea resource bank in the New Zealand are collected in this paper. The tectonic evolution simulation was carried out by using the 2D Move balance profile technique, and combining regional dynamics, the tectonic evolution of the northern and southern basins is divided into seven phases: (1) intracontinental rift stage from early Cretaceous to late Cretaceous; (2) late Cretaceous fault transition period; (3) the early depression stage of the Eocene; (4) a tectonic inversion stage in the late Eocene; (5) the thermal sedimentation stage from Eocene to Oligocene; (6) secondary tectonic inversion from Oligocene to Miocene; (7) ocean subsidence stage. Since no obvious secondary tectonic inversion stage was found in the central basin, the structural evolution of the central basin is divided into five stages: (1) intracontinental rift stage from early Cretaceous to late Cretaceous; (2) late Cretaceous fault transition period; (3) the early depression stage of the Eocene; (4) the tectonic inversion stage in the late Eocene; (5) the stage of marine subsidence from the Eocene to the present. At this stage, the basin as a whole descended and gradually formed its present appearance. The northern part of the Fairway Basin is greatly affected by regional tectonic activities, and the Cretaceous strata have more fault structures. More diapir structure occurred in the late Cretaceous strata in the central part of the basin. Since the formation of the southern part of the basin, it has been less affected by tectonic activities, the developmental strata are intact, and the pre-Cenozoic strata are thicker. The tectonic activity is strong in the northern part of the Fairway Basin, with a weaker central part and a smaller southern part. The sedimentary strata are thickened and thinned from north to south.
- Fairway Basin,
- geophysical data,
- geological characteristics,
- tectonic evolution

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References(18)

References

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