Isotopic composition of helium in eclogite from the Dabie Mountains, central China and its geological significance |
| |
| Authors: | Jianguo Du Jianzhen Zhang Mingliang Sun Youlian Zhang |
| |
| Institution: | (1) Lanzhou Institute of Geology, Chinese Academy of Sciences, 730000 Lanzhuo, China;(2) Shijiazhuang College of Economics, 050031 Shijiazhuang, China;(3) Seismological Publishing House, 100081 Beijing, China;(4) Present address: Center for Analysis and Prediction, State Seismological Bureau, 100036 Beijing, China |
| |
| Abstract: | Isotopic geochemical characteristics of helium in garnet and omphacite of eclogite in the Dabie Mountains are discussed. Concentrations
of3He and4He in garnet and omphacite are 3.9 × 10−14–24.0 × 10−14 and 0.48 × 10−7–9.42 × 10−7cm13.g−1, respectively. Values of3He/4He have a range of (1.19–4.63) × 10−7. Helium In the eclogite is derived from both mantle and crust. Isotopic geochemical data of helium indicate that eclogite
in the Dabie Mountains might be formed in depleted mantle and the age of the cologite would be Indo-China epoch. |
| |
| Keywords: | helium isotope eclogite Dabie Mountains |
| 本文献已被 SpringerLink 等数据库收录！ |
|
