空心微子区法在大兴安岭森林沼泽景观区区域化探异常圈定中的应用

doi:10.11720/wtyht.2025.1485

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Abstract

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.

Key words： hollow micro-area method anomaly delineation regional geochemical survey Great Xing'an Range

Received: 11 December 2024 Published: 23 October 2025

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	Wei TANG
	Zheng-Jiang TANG
	Ying-E ZHANG
	Qiu-Xuan WANG

Cite this article:

Wei TANG,Zheng-Jiang TANG,Ying-E ZHANG, et al. Application of the hollow micro-area method for anomaly delineation in regional geochemical surveys within the forest swamp landscape area, Great Xing'an Range[J]. Geophysical and Geochemical Exploration, 2025, 49(5): 1070-1079.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2025.1485 OR https://www.wutanyuhuatan.com/EN/Y2025/V49/I5/1070

Traffic location map of the study area

Geological map of the study area

Ranking diagram of enrichment factors (q) for various elements

Abnormal threshold of main ore-forming elements and ore-forming indicator elements

Copper anomaly distribution(abnormal threshold method)

Plumbum anomaly distribution(abnormal threshold method)

Schematic diagram of hollow tiny subregion

Copper anomaly distribution(hollow tiny subregion method)

Plumbum anomaly distribution(hollow tiny subregion method)

Analysis diagram of HS-77 comprehensive anomaly

Analysis results of partial stream sentiments densification samples in HS-77 comprehensive anomaly inspection

Analysis results of partial trench samples in HS-77 comprehensive anomaly inspection

Analysis diagram of HS-45 comprehensive anomaly

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