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| THE DETERMINATION OF THE SAMPLING HORIZON IN ULTRA-LOW DENSITY DEEP PENETRATION GEOCHEMICAL SURVEY IN THE FOREST-SWAMP AREA OF CENTRA HEILONGJIANG PROVINCE |
| HU Zhong-xian1,2, YANG Zhao-wu1,2, CHENG Zhi-zhong3, WANG Xue-qiu3 |
1. China University of Geosciences, Beijing 100083, China;
2. Heilongjiang Institute of Regional Geological Survey, Harbin 150080, China;
3. Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China |
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Abstract Based on the study of the difference between aqua regia solution and HF-HClO4-HNO3-HCl solution and the distribution of elements in flood plain sediments A, B and active stream sediments, the authors hold that flood plain sediments A can be used as the effective sampling media in the ultra-low density deep penetration geochemical survey in the forest-swamp area of central Heilongjiang Province.
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Received: 27 May 2004
Published: 24 April 2005
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