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Marginal Ore-Forming System and Ore-Forming Prediction from Neixiang to Xichuan in Southwest Henan Province(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2007年第01期
Page:
11-14
Research Field:
Publishing date:

Info

Title:
Marginal Ore-Forming System and Ore-Forming Prediction from Neixiang to Xichuan in Southwest Henan Province
Author(s):
WEI He-ming; Q IN Hai-shao; JIAO Jian-g ang
School of Earth Sciences and Resources Management, Chang’ an University, Xi’an 710054, Shaanxi, China
Keywords:
marginal ore-forming system;  mineralized concentration area;  ore-forming margin;  geological anomaly event;  ore-forming prediction;  Neixiang to Xichuan area;  Henan Province
PACS:
P612
DOI:
-
Abstract:
There is a complete marginal ore-forming system from Neixiang to Xichuan in the Southwest of Henan Province. It’ s a mineralized concentration area for all kinds of metals, gold, silver, copper etc. The different mineral deposits have different condition in orefield, but all have marginal ore-forming characteristic. Through researching the ore-forming characteristic in the area, this paper gets the marginal ore-forming regularity. The regularity possesses the important guiding and applied significance. Applying marginal ore-forming theory, this paper carries practical investigation on the ore control factors in field, poses the new knowledge of marginal ore- forming system in the Neixiang to Xichuan area of the southwest of Henan Province. The first ore-forming margin is the interface where Huabei plate and Yangzi plate(two sides of Shanyang to Xixia faulted zone), which control the forming of two major mineralization belt; the second ore-forming margin is the largely region fault margin and the vice-structural unit margin,which control the forming of region mineralization belt; the third ore- forming margin is the rock mass margin,vice-faulted zone margin and stratigraphic plane, which control the forming of orefield and mineral deposit; the forth ore-forming margin is the different facies plane,the different facies interlayer plane and the area of changing with structural form and occurrence. The different marginal intersection and superimposed section are the beneficial for ore forming. The marginal ore-forming system is close related to geological anomaly event. Plate motion, areal structure, volcano, magma, intrusion, sedimentary environment evolution are dominant factors that the forming of marginal ore-forming system, and with the marginal ore-forming regularity. This offers the ore-forming prediction, then indicate the major direction for ore hunting and the beneficial region for ore-forming(target area).

References:

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Last Update: 1900-01-01