|Table of Contents|

Application Prospect of Aerogeophysics in Strategic Mineral Exploration(PDF)

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

Issue:
2023年第02期
Page:
143-156
Research Field:
应用地球物理
Publishing date:

Info

Title:
Application Prospect of Aerogeophysics in Strategic Mineral Exploration
Author(s):
XIONG Sheng-qing1; 2;  XU Xue-yi1; 3
(1. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China; 2. Key Laboratory of Airborne Geophysics and Remote Sensing Geology, Ministry of Natural Resources, Beijing 100083, China; 3. China Geological Survey, Beijing 100037, China)
Keywords:
aerogeophysics;  mineral exploration;  exploration instrument;  software platform;  geophysical geological modeling method;  air-ground-borehole exploration technology;  strategic mineral;  application prospect
PACS:
P631.2+22
DOI:
10.19814/j.jese.2022.11055
Abstract:
Effective exploration technology is urgently needed to carry out the strategic action of mineral exploration breakthrough in China. Aerogeophysics is an important and efficient mineral exploration method, which has played an important role in the world mineral exploration history. Since the 21st century, aero geophysical technology has made great progress in China, such as self-developed high-sensitivity instruments, higher resolution and more types of seamless data collection methods, finer data processing and more accurate interpretation methods, greater detection depth, and wider application fields. In particular, new exploration technologies such as multi-parameter aeromagnetic, airborne time-domain electromagnetic, and airborne gravity, have developed rapidly. Examples of mineral exploration show that aerogeophysics can play an important direct or indirect role in different stages of strategic mineral exploration, especially in the exploration of iron, copper, nickel, uranium, sylvite and other scarce minerals. However, for the new requirements of difficult access and deep earth prospecting, aero geophysical mineral exploration faces some difficulties, such as weak useful geophysical signals, large interference from shallow parts, uncertainty of detection results and difficult construction of geological and geophysical prospecting models. Moreover, the self-developed aeronautical geophysical instruments are not sufficiently practical and used enough. In addition, the development of UAV survey technology is slow, and higher resolution technologies such as aeromagnetic gradient tensor, aero gravity gradient tensor and airborne electromagnetic technology are developing slowly. Advanced and practical high-precision airborne geophysical data acquisition and data processing technologies need to be improved, and the integration of aero geophysical and other methods is not deep enough. The functions of different methods and stages of aero geophysical prospecting were preliminarily summarized, as well as the effectiveness of detecting different mineral species and types, and the idea of aero geophysical technology supporting strategic mineral exploration was proposed. Guided by advanced metallogenic system theory, the effective technologies or technology combinations were studied to solve the problems of mineral exploration deployment and accurate positioning of concealed mineral bodies or geological bodies. Making breakthroughs were focused on in the practicability of domestic instruments and software platforms, developing instruments with higher sensitivity, developing efficient low-altitude high-resolution aero geophysical integration exploration methods, effective information enhancement and weak signal extraction technologies, and intelligent multi-source joint inversion and geophysical geological modeling methods. At the same time, the air-ground-borehole geophysical exploration technology was looked forward to the application prospect of aviation geophysical strategic minerals exploration, and the development trend of aero geophysical exploration technology and the technical methods that need to be developed in the future were discussed.

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Last Update: 2023-05-20