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Method for exploring overlay area skarn type iron-copper-gold deposit

A technology of skarn type and covering area, applied in the field of geophysical exploration, can solve the problems of difficulty in mineralizing marble xenoliths and low resolution of identifying xenoliths

Inactive Publication Date: 2017-05-31
安徽省勘查技术院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is more difficult to find mineralized marble xenoliths in the overburden area
According to the relatively high density of marble xenoliths, the gravity exploration method can be used, but the resolution of identifying xenoliths is not high, and it is difficult to directly meet the technical requirements of drilling positioning

Method used

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  • Method for exploring overlay area skarn type iron-copper-gold deposit
  • Method for exploring overlay area skarn type iron-copper-gold deposit
  • Method for exploring overlay area skarn type iron-copper-gold deposit

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A method for searching for skarn-type iron-copper-gold deposits in covered areas is characterized in that the steps are as follows:

[0038] Step 1. Collect previous geological and mineral resources and geophysical prospecting data in the exploration area, and compile sketches of bedrock geology and mineral resources; carry out 1 / 50,000 high-precision gravity measurements and 1 / 25,000 high-precision magnetic surveys in the exploration area to infer concealed rock bodies and stratigraphic structures Interpretation; combine the characteristics of regional geological structure; compile bedrock geological and mineral resources map; compile the mineralization structure map of the prospecting area by analyzing the mineralization geological conditions according to the bedrock geological and mineral resources map and the regional mineralization law;

[0039] Step 2: Determine the prospecting target area according to the ore-forming structure map;

[0040] The conditions for selecting ...

Embodiment 2

[0050] Step 1. Collect previous geological and mineral resources and geophysical prospecting data in the exploration area, and compile sketches of bedrock geology and mineral resources; carry out 1 / 50,000 high-precision gravity measurements and 1 / 25,000 high-precision magnetic surveys in the exploration area to infer concealed rock bodies and stratigraphic structures Interpretation; combine the characteristics of regional geological structure; compile bedrock geological and mineral resources map; compile the mineralization structure map of the prospecting area by analyzing the mineralization geological conditions according to the bedrock geological and mineral resources map and the regional mineralization law;

[0051] Step 2: Determine the prospecting target area according to the ore-forming structure map;

[0052] The conditions for selecting the prospecting target area include: ①In the contact zone between the rock mass and the carbonate formation;

[0053] ②The rock mass is one o...

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Abstract

The invention discloses a method for exploring overlay area skarn type iron-copper-gold deposit. According to the method, through steps of analyzing a metallogenetic geological condition and compiling an exploration area metallogenetic structural map; screening an ore finding target area; performing CSAMT method section measurement, determining positions of mineralized marble xenoliths and performing drilling verification, positioning of the mineralized marble xenoliths is realized, thereby realizing a purpose of searching the overlay area skarn type iron-copper-gold deposit. Compared with the prior art, the method is advantageous in that a technical solution of searching the marble xenoliths by means of a CSAMT method is presented according to a resistivity high-low-high difference among marble, ore (mineralized rock) and rock body; and the method is an effective method for deposit exploring in an overlay area.

Description

Technical field [0001] The invention relates to the field of geophysical prospecting, in particular to a method for searching for skarn iron-copper-gold deposits in covered areas. Background technique [0002] During the upward intrusion of deep magma into the strata, the magma first enters the fissures of the surrounding rock to displace the surrounding rock. At the same time, as the surrounding rock is continuously eroded by the magmatic hydrothermal fluid, part of the surrounding rock is forced to separate from the stratum and be wrapped by magma to form Surrounding rocks to capture xenoliths. When intermediate acidic magmatic rocks intrude into carbonate formations, skarnization, marbleization and mineralization often occur, and skarn-type deposits are formed in and near the contact zone of surrounding rocks. The carbonate wall rocks (ie, surrounding rock xenoliths) wrapped by magma are baked by high-temperature magma to produce marble alteration. At the same time, the conta...

Claims

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Application Information

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IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 汪青松崔先文张凯王芝水产思维
Owner 安徽省勘查技术院
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