Earth Sciences

Volume 8, Issue 4, August 2019

  • Basic Geological and Geochemical Analysis in Wenquanbingzhan Area

    Zheng Xiang Guang, Lu Lin, Mao Yi Feng, Wang Chen, Meng Jun Feng

    Issue: Volume 8, Issue 4, August 2019
    Pages: 217-227
    Received: 13 May 2019
    Accepted: 25 June 2019
    Published: 18 July 2019
    Abstract: According to the basic geology study, the feature of the element association and the analysis on characteristic element abnormal combination, we think that there are large scale intermediate-basic volcanic (subvolcanic) rocks with some medium acid intruded rocks or vein rocks groups by the work of 1 to 50000 scale geochemical exploration in the nor... Show More
  • Behaviors of Converted Wave in an Azimuthally Isotropic Medium - A Physical Model Study

    Chih-Hsiung Chang, Young-Fo Chang, Hsiu-Chi Tsao

    Issue: Volume 8, Issue 4, August 2019
    Pages: 228-234
    Received: 7 August 2019
    Accepted: 4 September 2019
    Published: 20 September 2019
    Abstract: The existence of subsurface fractures provides not only space for the residence of petroleum but also paths of migration. Therefore, subsurface fractures are of great interest to exploration geophysicists. In reflection seismology, a reservoir of vertically aligned fractures is often considered to possess azimuthal anisotropy, or Horizontal Transve... Show More