Tectonics of the southern tip of the Parece Vela Basin, Philippine Sea Plate

doi:10.1016/j.tecto.2007.11.017

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Tectonics of the southern tip of the Parece Vela Basin, Philippine Sea Plate
	Okino, Kyoko 1; Ohara, Yasuhiko 2; Fujiwara, Toshiya 3; Lee, Sang-Mook 4; Koizumi, Kin'ichiro 1; Nakamura, Yasuyuki 1; Wu, Shiguo 5
刊名	TECTONOPHYSICS
	2009-03-10
卷号	466 期号:3-4 页码:213-228
关键词	Backare Spreading Geophysical Mapping Rock Geochemistry Philippine Sea
ISSN号	0040-1951
DOI	10.1016/j.tecto.2007.11.017
文献子类	Article
英文摘要	We report new geophysical and petrological data collected at the southern tip of the Parece Vela Basin in the Philippine Sea. The Parece Vela Basin, which was formed as a backarc basin behind proto Mariana arc-trench system from late Oligocene to middle Miocene, provides us a good opportunity to study the nature of successive backarc basin formations in the Philippine Sea and the relationship between are and backarc magmatisms. Regional bathymetric map derived from satellite altimetry shows that the southern tip of the basin, now located just west of the Yap arc-trench system, has unique morphological and tectonic features which include: 1) the absence of spreading center or its trace, 2) shallow average depth, and 3) enigmatic curved structures. Our newly collected high-resolution bathymetric data reveal that the spreading fabric similar to the central Parece Vela Basin exists to the north of 9 degrees 20'N. Thus it appears that the present-day Yap arc and backarc region represent the western half of the seafloor that was produced by the early E-W and the following NE-SW spreading in the northern and central Parece Vela Basin, and that the eastern counterpart now lies west of the West Mariana Ridge. Unlike the northern Parece Vela Basin, there appears to be no evidence for a systematic propagation of spreading center in the southern part. Instead two rift segments, one which extends from the central Parece Vela Basin and the other which lies within the western remnant arc (Kyushu-Palau Ridge), overlap at the southern tip of the basin, producing a complex seafloor that includes curvilinear deeps and deformed topographic highs. (c) 2007 Elsevier B.V. All rights reserved.; We report new geophysical and petrological data collected at the southern tip of the Parece Vela Basin in the Philippine Sea. The Parece Vela Basin, which was formed as a backarc basin behind proto Mariana arc-trench system from late Oligocene to middle Miocene, provides us a good opportunity to study the nature of successive backarc basin formations in the Philippine Sea and the relationship between are and backarc magmatisms. Regional bathymetric map derived from satellite altimetry shows that the southern tip of the basin, now located just west of the Yap arc-trench system, has unique morphological and tectonic features which include: 1) the absence of spreading center or its trace, 2) shallow average depth, and 3) enigmatic curved structures. Our newly collected high-resolution bathymetric data reveal that the spreading fabric similar to the central Parece Vela Basin exists to the north of 9 degrees 20'N. Thus it appears that the present-day Yap arc and backarc region represent the western half of the seafloor that was produced by the early E-W and the following NE-SW spreading in the northern and central Parece Vela Basin, and that the eastern counterpart now lies west of the West Mariana Ridge. Unlike the northern Parece Vela Basin, there appears to be no evidence for a systematic propagation of spreading center in the southern part. Instead two rift segments, one which extends from the central Parece Vela Basin and the other which lies within the western remnant arc (Kyushu-Palau Ridge), overlap at the southern tip of the basin, producing a complex seafloor that includes curvilinear deeps and deformed topographic highs. (c) 2007 Elsevier B.V. All rights reserved.
学科主题	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000264649100008
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/3689]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Univ Tokyo, Ocean Res Inst, Nakano Ku, Tokyo 1648639, Japan 2.Hydrog & Oceanog Dept Japan, Chuo Ku, Tokyo 1040045, Japan 3.Japan Agcy Marine Earth Sci & Technol, Kanagawa 2370061, Japan 4.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul 151747, South Korea 5.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Okino, Kyoko,Ohara, Yasuhiko,Fujiwara, Toshiya,et al. Tectonics of the southern tip of the Parece Vela Basin, Philippine Sea Plate[J]. TECTONOPHYSICS,2009,466(3-4):213-228.
APA	Okino, Kyoko.,Ohara, Yasuhiko.,Fujiwara, Toshiya.,Lee, Sang-Mook.,Koizumi, Kin'ichiro.,...&Wu, Shiguo.(2009).Tectonics of the southern tip of the Parece Vela Basin, Philippine Sea Plate.TECTONOPHYSICS,466(3-4),213-228.
MLA	Okino, Kyoko,et al."Tectonics of the southern tip of the Parece Vela Basin, Philippine Sea Plate".TECTONOPHYSICS 466.3-4(2009):213-228.