Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Geoscience》 2018-05
Add to Favorite Get Latest Update

Thermoluminescence: An New Tool for Natural Gas Hydrate Exploration

ZHANG Fugui;WANG Chengwen;ZHANG Shunyao;ZHOU Yalong;TANG Ruiling;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences;Key Laboratory of Geochemical Cycling of Carbon and Mercury in the Earth's Critical Zone,Chinese Academy of Geological Sciences;  
The development of geochemical exploration technologies unaffected by marsh microorganisms is necessary to improve the prediction of wells and to explore natural gas hydrates in mid-latitude permafrost areas.The potential of thermoluminescence as a new tool for the investigation of gas hydrates in permafrost areas was studied in this paper. The study area,150 km~2 in size,is located in the alpine-arctic swamp landscape of the Qilian Mountains. The sampling density and depth were 2 points/km~2 and 60 cm,respectively. In total,300 soil samples were collected and the Thermoluminescent Dosimeter( TLD) was used in measurement of soil natural thermoluminescence. The results indicated that thermoluminescence anomalies were identified in the gas hydrate deposits. A comprehensive interpretation was conducted based on geological and geochemical survey results.The relationship between the hydrocarbon of gas hydrates anomalies and thermoluminescence anomalies was further explored. We proposed a geogas migration mechanism of soil thermoluminescence in the soil above the natural gas hydrate deposits. The soil thermoluminescence anomalies near the ground surface of the Muli Coalfield in the Qilian Mountains,derived from the deep hydrate deposits and fault structure,are not affected by marsh microorganisms; they are effective tools for natural gas hydrate exploration in permafrost areas.
【Fund】: 国家专项项目(GZHL20110324 GZH201400302);; 中国地质调查局地质调查项目(DD20160224);; 中央级公益性科研院所基本科研业务费专项基金项目(AS2016Y01 AS2015J03)
【CateGory Index】: P618.13;P632
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved