Author/Authors :
Sheng Xu، نويسنده , , Shunʹichi Nakai، نويسنده , , Hiroshi Wakita، نويسنده , , Yongchang Xu، نويسنده , , Xianbin Wang، نويسنده ,
Abstract :
The abundance and isotopic composition of He have been determined for a variety of natural gases (oil-field gases) in sedimentary basins in the continent of China. The3He/4He and4He/20Ne ratios range from 0.004 to 4.99 Ra (where Ra denotes atmospheric3He/4He ratio = 1.4 × 10−6), and from 100-39,000, respectively. Helium in the gas sample is composed of mantle-derived He and crustal radiogenic He.
