A kind of sea area gold ore prospecting method

Abstract

The invention provides a gold exploration method in sea areas. The method comprises the following steps: step1, selecting a favorable metallogenic region; step2, making a high precision magnetic measurement geological structure deduction and interpretation map of mining sea area; step3, making a mining sea area geological structure map to determine an optimal metallogenic section; step4, determining a theoretical geographic coordinate value of a drilling hole position; step5, mounting a core drilling machine; step6, obtaining the rock core from the whole drilling hole and performing the location survey of the orifice coordinate of the drilling hole; and step7, analyzing and testing the rock core sample obtained in the step6, and then obtaining the spatial position and the gold grade change data of the gold ore body in the sea area.

Description

technical field [0001] The invention relates to an ore prospecting method, in particular to a sea area gold ore prospecting method. Background technique [0002] The importance of gold in the economy and people's livelihood is widely known. Therefore, most countries in the world have taken various effective measures to vigorously develop gold mines. The gold boom that has been set off in recent decades has continued unabated, and its development momentum is getting bigger and bigger. Our country has applied and introduced a variety of gold prospecting methods, such as "Gold Deposit Geology and Prospecting Methods" edited by Luan Shiwei et al. (Sichuan Science and Technology Press, 1987.06) and "Gold Prospecting Methods and Prospecting Methods" edited by Zhao Puyun et al. Technology" (Atomic Energy Publishing House, 1994.05), etc., have achieved good results in prospecting. [0003] In the past, gold mines were looked for on land at home and abroad, and the gold mine prospec...

AI Technical Summary

Problems solved by technology

[0007] 3. Due to the low-resistance shielding of seawater, it is impossible to use electrical exploration methods such as induced polarization method with better gold prospecting effect in sea areas

[0008] 4. When carrying out high-precision magnetic surveys in shallow seas, due to the limitation of the water depth of the towed marine magnetometer, it is impossible to conduct high-precision magnetic surveys in near-shore shallow sea areas. A very wide blank area of ​​magnetic survey is produced, which is not conducive to the connection and data interpretation of land and sea high-precision magnetic survey data

[0009] 5. Use a towed marine magnetometer for high-precision magnetic measurement. In order to eliminate the influence of the hull induced magnetic field and the fixed magnetic field on the sensor, the length of the towed cable between the towed fish and the GPS antenna should be greater than three times the length of the ship, and it is impossible to measure the towed fish in the same position. The real-time coordinates cannot meet the point error requirements of high-precision magnetic measurement

Images