Application of the hollow micro-area method for anomaly delineation in regional geochemical surveys within the forest swamp landscape area, Great Xing'an Range
TANG Wei(), TANG Zheng-Jiang, ZHANG Ying-E, WANG Qiu-Xuan
Geological Exploration Technology Institute of Anhui Province, Hefei 230031, China
For regional geochemical surveys in the forest swamp landscape area, Great Xing'an Range, a variable main geological setting can lead to significant element background variations, posing challenges to anomaly extraction. After gridding the original data, this study compared the anomalies delineated by the commonly used anomaly threshold method with the anomalies obtained from the hollow micro-area method. The comparison reveals that the latter could effectively suppress the variations in the geochemical field caused by different geological settings, enabling more objective anomaly extraction. Based on a systematic summary of the area's geological and geochemical characteristics, this study conducted anomaly screening and verification, achieving satisfactory prospecting results. Finally, this study preliminarily summarized the dominant prospecting indicators and orientations for the area.
Tang Z J, Cheng Z M, Hong D J. Characteristics of Taipinggou stream sediment anomaly and prospcting effect[J]. Geophysical and Geochemical Exploration, 2011, 35(5):584-587.
Liu D P, Ding F, Tang Z J. A tentative application of geochemical exploration to the basic geology study of Xiaoergou area[J]. Geophysical and Geochemical Exploration, 2004, 28(3):209-212,217.
Tang W, Tang Z J, Cheng Z M, et al. Application of stream sediments geochemical survey in the Cu reconnaissance at the Tomatlan area,Mexico[J]. East China Geology, 2020, 41(2):159-165.
Tao C J, Jia S J, Chen F R, et al. Experimental study of granularity for stream sediments of the Shapinggou molybdenum deposit,Northern Huaiyang,Anhui[J]. East China Geology, 2017, 38(1):58-65.
Zhang X N, Kou S W, Liu A H. Characteristics and evaluation of soil geochemical anomalies in Dongshanwu area,Ningguo,Anhui Province[J]. Geophysical and Geochemical Exploration, 2017, 41(1):71-78.
[6]
蒋敬业. 应用地球化学[M]. 武汉: 中国地质大学出版社, 2006.
[6]
Jiang J Y. Applied geochemistry[M]. Wuhan: China University of Geosciences Press, 2006.
[7]
杨小峰, 刘长垠, 张泰然, 等. 地球化学找矿方法[M]. 北京: 地质出版社, 2007.
[7]
Yang X F, Liu C Y, Zhang T R, et al. Geochemical prospecting method[M]. Beijing: Geological Publishing House, 2007.
Tang W, Zhang Y E, Luo X D, et al. Discussion on soil environment quality of Eerguna region based on regional geochemical data[J]. Energy Technology and Management, 2023, 48(1):11-14.
Zhang Y E, Chen L, Tang W. The regional geochemical exploration achievements report of the Enhe sheet,Right Banner of Ergun sheet,and Left Banner of Ergun sheet[R]. Geological Exploration Technology Institute of Anhui Province, 2014.
Ministry of Geology and Mineral Resources,People's Republic of China. DZ/T 0167—2006 Specifications for regional geochemistry Exploration(1∶250,000)[S]. Beijing: Geological Publishing House, 2006.
He Z Y. The sieving and inspection of regional geochemical anomalies in plateau-shallow hill area of northern Sichuan[J]. Geophysical and Geochemical Exploration, 2000, 24(2):138-145.
Shi C Y, Zhang J H, Huang X M. Subregion Median contrast filtering method and recognition of weak anomalies[J]. Geophysical and Geochemical Exploration, 1999, 23(4):250-257.
