Magnetic anomaly in eastern China and adjacent sea, and its tectonic significance

被引：0
作者：
Wu Z. [1 ]
Gao J. [1 ]
Shen Z. [1 ]
Yang C. [1 ]
Zhang T. [1 ]
机构：
[1] Key Laboratory of Submarine Geosciences(State Oceanic Administration), Second Institute of Oceanography, State Oceanic Administration, Hangzhou
来源：
Gao, Jinyao (jygao@mail.hz.zj.cn) | 2018年 / Science Frontiers editorial department卷 / 25期
关键词：
Data merging; Eastern China and adjacent sea; Magnetic anomaly; Tectonic significance;
D O I：
10.13745/j.esf.yx.2016-11-49
中图分类号：
学科分类号：
摘要：
On the basis of the latest shipboard magnetic data merging with the world digital magnetic anomaly, we have calculated the reduction to the pole (RTP) anomaly, pseudo-gravity anomaly, analytic signal and tilt angle, and used the wavelet decomposition and frequency spectrum analysis for the RTP anomaly. The results revealed the magnetic signature of the main tectonics in eastern China and adjacent sea. The distributions of paleo-continental nucleus in the North China block were indicated as well as the boundaries of Yangzi block. It was pointed out that the volcanic belt in the coastal area of Zhejiang and Fujian provinces connects to the Dongsha Uplift, and both of them are Mesozoic subduction volcanic arc. The NW-oriented fault may be the boundary fault in which Paleo-Tethys tectonic domain converted to the Pacific tectonic domain, and controlled the subduction process during the Late Mesozoic and the conversion from the active continental margin to the passive continental margin since the Mesozoic at the Northern South China Sea continental margin. © 2018, Editorial Office of Earth Science Frontiers. All right reserved.
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页码：210 / 217
页数：7
相关论文
共 10 条
  • [1] Maus S., Sazonova T., Hemant K., Et al., National geophysical data center candidate for the world digital magnetic anomaly map, Geochemistry, Geophysics, Geosystems, 8, 6, (2007)
  • [2] Li X., Magnetic reduction-to-the-pole at low latitudes: observations and considerations, The Leading Edge, 8, pp. 990-1002, (2008)
  • [3] Roest W.R., Verhoett J., Pilkington M., Magnetic interpretation using the 3D analytic signal, Geophysics, 57, 1, pp. 116-125, (1992)
  • [4] Verduzco B., Airhead J.D., Green C.M., Et al., New insights into magnetic derivatives for structural mapping, The Leading Edge, 23, 2, pp. 116-119, (2004)
  • [5] Miller H.G., Singh V., Potential field tilt: a new concept for location of potential field sources, Journal of Applied Geophysics, 32, 2-3, pp. 213-217, (1994)
  • [6] Sibuet J.C., Hsu S.K., Geodynamics of the Taiwan arc-arc collision, Tectonophysics, 274, pp. 221-251, (1997)
  • [7] Li Z.X., Collision between the North and South China blocks: a crustal-detachment model for suturing in the region east of the Tanlu Fault, Geology, 22, 8, pp. 739-742, (1994)
  • [8] Zhao M.H., Qiu X.L., Xia S.H., Et al., Seismic structure in the northeastern South China Sea: S-wave velocity and vp/vs ratios derived from three-component OBS data, Tectonophysics, 480, 1-4, pp. 183-197, (2010)
  • [9] Hsu S.K., Yeh Y., Doo W.B., Et al., New bathymetry and magnetic lineations identifications in the northernmost South China Sea and their tectonic implications, Marine Geophysical Researches, 25, pp. 29-44, (2004)
  • [10] Wessel P., Smith W.H.F., New, improved version of generic mapping tools released, Eos, Transactions American Geophysical Union, 79, 47, (1998)
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