THE FOLLOW-UP METHODS FOR REGIONAL GEOCHEMICAL ANOMALIES IN FOREST-SWAMP LANDSCAPE AREAS
YANG Shao-ping1, JIAO Bao-quan2, SUN Zhong-jun1, ZHANG Xue-jun1, XU Ren-ting1, LU Xue-pu2, PAN Wen-sheng3, BO Xiang-zong3
1. Institute of Geophysical and Geochemical Exploration, Langfang 065000, China;
2. No.5 Geological Survey of Jilin Province, Jiutai 130500, China;
3. Geophysical Exploration Institute of Helongjiang Province, Harbin 150036, China
The follow-up methods for regional geochemical anomalies were studied in four areas with the forest-swamp middle-low mountain landscape. Some conclusions were summarized: ① Stream sediment survey of -10~+60 mesh with sampling density of 3~4 samples/km2 is a good method in search for small-large sized deposits; ② pedogeochemical method collecting layer-B residual and slope materials of -20 mesh is also a good method, which uses an irregular network with sampling density of about 4 samples/km2 along piedmont and ridge; ③ soaked soil survey with 6~7 samples/km2 for follow-up in talus areas can be effectively used; ④ peat survey method should not be applied because it only provides poor information of mineralization.