40Ar/39Ar ages of seamount trachytes from the South China Sea and implications for the evolution of the northwestern sub-basin
dc.contributor.author | Li, X. | |
dc.contributor.author | Li, J. | |
dc.contributor.author | Yu, X. | |
dc.contributor.author | Wang, C. | |
dc.contributor.author | Jourdan, Fred | |
dc.date.accessioned | 2017-01-30T11:22:13Z | |
dc.date.available | 2017-01-30T11:22:13Z | |
dc.date.created | 2015-10-29T04:09:12Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Li, X. and Li, J. and Yu, X. and Wang, C. and Jourdan, F. 2015. 40Ar/39Ar ages of seamount trachytes from the South China Sea and implications for the evolution of the northwestern sub-basin. Geoscience Frontiers. 6 (4): pp. 571-577. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/11001 | |
dc.identifier.doi | 10.1016/j.gsf.2014.08.003 | |
dc.description.abstract |
A chronological study of seamount rocks in the South China Sea basin provides a great opportunity to understand the expansion and evolution history of the sea basin. In this paper, we analyzed the 40Ar/39Ar age of trachytic samples collected from the Shuangfeng seamounts in the northwestern sub-basin of the South China Sea. The two samples yielded plateau ages of 23.80 ± 0.18 and 23.29 ± 0.22 Ma, respectively, which indicate magmatic activity in late Oligocene which helpful constraints the expansion time of the northwest sub-basin. Previous studies suggested that the northwestern sub-basin and southwestern sub-basin have experienced a relatively consistent expansion in the NW–SE direction followed by a late expansion of the eastern sub-basin. We concluded that the expansion of the northwestern sub-basin began prior to ca. 24 Ma, which also implicated magmatic events of a late or stop expansion of the northwestern sub-basin combined with our results of 40Ar/39Ar age data and previous geophysical data. | |
dc.publisher | Elsevier | |
dc.title | 40Ar/39Ar ages of seamount trachytes from the South China Sea and implications for the evolution of the northwestern sub-basin | |
dc.type | Journal Article | |
dcterms.source.volume | 6 | |
dcterms.source.number | 4 | |
dcterms.source.startPage | 571 | |
dcterms.source.endPage | 577 | |
dcterms.source.issn | 1674-9871 | |
dcterms.source.title | Geoscience Frontiers | |
curtin.note |
This open access article is distributed under the Creative Commons license | |
curtin.department | Department of Applied Geology | |
curtin.accessStatus | Open access |