2021 Vol. 40, No. 2-3
Article Contents

WEI Zhenquan, YANG Yong, HE Gaowen, YANG Shengxiong, YAO Xiang. Drift history and subsidence process of Weijia Guyot, China contract area of Co-rich crust[J]. Geological Bulletin of China, 2021, 40(2-3): 260-266.
Citation: WEI Zhenquan, YANG Yong, HE Gaowen, YANG Shengxiong, YAO Xiang. Drift history and subsidence process of Weijia Guyot, China contract area of Co-rich crust[J]. Geological Bulletin of China, 2021, 40(2-3): 260-266.

Drift history and subsidence process of Weijia Guyot, China contract area of Co-rich crust

  • Based on the global plate tectonic-bathymetric model, the horizontal drift track and vertical subsidence process of the Weijia Guyot, also known as the cobalt-rich nodule contract area of China in the Western Pacific Ocean, are inversed to obtain the palaeobathymetry and palaeolatitude of seamounts in different historical periods and to discuss the influence of hot spots in the evolution process of the seamount.The results show that the Weijia Guyot was formed initially in the isotopic anomaly and thermal anomaly area of South Pacific, and then drifted northeastward about 7500 km to the present position.There is a certain distance (about 200 km) between the initial location of the Weijia Guyot and its adjacent hot spots.The Weijia Guyot did not pass through these hot spots in the process of drift, and its closest distance to them is 150 km.Combined with the analysis of the present structure of the Weijia Guyot, it is speculated that these hot spots are not the only cause of the Weijia Guyot formation, but the Weijia Guyot was branded as "hot spots" in its formation and drift process.

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