【作者】 刘元龙； 曾维鲁； 武传真； 王谦身； 刘洪臣；

【Author】 Liu Yuanlong Zeng Weilu Wu Chuanzheng Wang Qianshen Liu Hongchen (Institute of Geophysics,Chinese Academy of Sciences)

【机构】 中国科学院地球物理研究所；

【摘要】 本文应用近年来地球卫星测量资料及地面重力资料得出的(GEM-10B)2-36阶重力位球谐系数及Rwicorn(1967)给出的应力方程计算了全球5°×5°地幔对流在岩石层底部产生的应力场.结果表明,全阶(2-36)5°×5°应力场与全球性板块边界及海岭分布符合较好,上升的张应力区与海岭对应,下凹会聚的压应力区与海沟地区相对应.13-36阶应力场与板块内部大构造单元符合较好,上升的张应力区与大的凹陷盆地相应,而会聚的压应力区则与板块接触线或山脉区相对应.文中讨论了13-36阶应力场与世界大型油气田区,特别是中新生代油气田区的分布关系,得出形成中新生代油田区的大型沉积盆地与地幔上涌的张应力区相对应.讨论了其形成机制,从而为这些矿产的远景预测提供了资料.更多还原

【Abstract】 The global mantle convection field under the lithosphere is computed in 5°×5°grid by using satellite servey and surface gravity data.It is shown in this paper that the complete (2-36) 5°×5°stress field is in good agreement with global plate boundary and searidge,rising tensile stresses regions are corresponding to searidge.The regions of compressible stress with depression and assembly are corresponding to oceanic trench.The stress field of 13-36 conforms with huge tectonic elements at innerplate,rising tensile stresses are corresponding to huge depressed basin.However,regions of assembled compressible stress conforms with plate’s touching lines or mountain ranges.We also discussed stress fields of 13-36 with large oil and gas fields regions in this paper.更多还原