caa a22 4500 477047416 CHVBK 20180405111334.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF00874737 doi (NATIONALLICENCE)springer-10.1007/BF00874737 The upper mantle flow beneath the North China Platform [Elektronische Daten] [Rong-Shan Fu, Jian-Hua Huang, Zhe-xun Wei] In this paper we establish an upper mantle convection model which is constrained by regional isostatic gravity anomalies. Comparing the computed convection patterns with the tectonic features of the North China Platform we find that there are two positive anomaly centers connected with upward flows. These anomalies belong to the tectonic units of the Shan-Xi geoanticline and the Lu-Xi geoanticline. The centers of downward flows are connected with the tectonic units of the Liao-Ji geosyncline. It is reasonable to suggest that the upward mantle flows push the lithosphere upward and generate the observed positive isostatic gravity anomaly. The downward mantle flows pull the lithosphere down and generate the negative anomaly. However, the use of simple analysis makes it difficult to explain the complex lithospheric dynamics of this region. In order to understand lithospheric structures and tectonic features we must investigate the mechanical properties of the lithosphere and the relationship between the lithosphere and the mantle. These problems are discussed in the last section of this paper. Birkhäuser Verlag, 1996 Upper mantle nationallicence lithosphere nationallicence thermal convection nationallicence Fu Rong-Shan Department of Earth and Space Sciences, University of Science and Technology of China, 230026, Hefei aut Huang Jian-Hua Department of Earth and Space Sciences, University of Science and Technology of China, 230026, Hefei aut Wei Zhe-xun Department of Earth and Space Sciences, University of Science and Technology of China, 230026, Hefei aut pure and applied geophysics Birkhäuser-Verlag 146/3-4(1996-09-01), 649-659 0033-4553 146:3-4<649 1996 146 24 https://doi.org/10.1007/BF00874737 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00874737 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fu Rong-Shan Department of Earth and Space Sciences, University of Science and Technology of China, 230026, Hefei aut NATIONALLICENCE 700 1- Huang Jian-Hua Department of Earth and Space Sciences, University of Science and Technology of China, 230026, Hefei aut NATIONALLICENCE 700 1- Wei Zhe-xun Department of Earth and Space Sciences, University of Science and Technology of China, 230026, Hefei aut NATIONALLICENCE 773 0- pure and applied geophysics Birkhäuser-Verlag 146/3-4(1996-09-01), 649-659 0033-4553 146:3-4<649 1996 146 24 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer