|
|
|
| Characteristics and indicative significance of hydrocarbon composition in shallow soil of polar permafrost region |
| YANG Zhi-Bin1, 2, 3, ZHANG Fu-Gui1, 2, 3, WANG Hui-Yan1, 2, 3 |
1.The National Center for Geological Exploration Technology,Langfang 065000,China;
2.Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China;
3.Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone,CAGS,Langfang 065000,China; |
|
|
|
|
Abstract Mohe basin is the main permafrost distribution area in China. The performance of experimental geochemical prospecting methods in the northwestern permafrost area of Mohe basin detected acidolysis hydrocarbon and adsorbed hydrocarbon in shallow soil, and the adsorbed hydrocarbon has relatively high value, with the average methane value being 12.48μL/L and the maximum value being 49.93μL/L,whereas acidolysis hydrocarbon has relatively low content. The results of three-dimensional fluorescence spectra show that hydrocarbon gas exhibits characteristics of condensate oil, which is pyrolysis gas, indicating that the deep source gas migrates to the surface and manifests microscopic geochemical information. Combined with the permafrost, temperature and pressure conditions, it is shown that the deep permafrost area probably has oil gas and natural gas hydrate.
|
|
Received: 08 September 2017
Published: 20 December 2017
|
|
|
|
|
|
| [1] |
WANG Bin, LUO Yan-Jun, MENG Guang-Lu, ZHANG Jing, ZHANG Hai-Di, CHEN Bo, HE Zi-Xin. Potential assessment of gold, copper, lead, zinc, tungsten, and tin deposits in Kyrgyzstan based on 1∶1 000 000 scale geochemical data[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 58-69. |
| [2] |
ZHAO Ze-Lin, LI Jun-Jian, ZHANG Tong, NI Zhen-Ping, PENG Yi, SONG Li-Jun. Geological characteristics and prospecting direction of rare earth element deposits in North China[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 46-57. |
|
|
|
|
