Mineralization Features Of Remote Sensing Of Skarn-type Multi-metal Mine Areas In East Bangong Lake,Tibet

Bangong Lake-Nujiang metallogenic belt is one of the most important resource rserve base in our country. As an important means of resources exploration,remote sensing can identify the distribution of resources quickly.The article selects Caima as study area which is an important ore concentration area in the east of Bangong Lake using high spectral resolution data,combining with modern geological theory and regional geological data collected,and do geological interpretation basing on WorldView-2, analysising geological parameters on measured spectra curves.Then take advantage of ASTER data extracting mineralization information,study the associate between Spatial distribution characteristics of a variety of alteration and ore-forming process.Last the paper establishes skarn mineralization remote sensing metallogenic characteristics and metallogenic mode,and do comprehensive metallogenic prediction research.Here are the understandings:1The paper interprete stratigraphy structure using high spatial resolution WorldView-2,and determine the stratigraphic boundary and the boundary of the intrusive rocks.Concluded that North East small fracture is the main ore-controlling structure,contact zone of two-diorite with marble and limestone is favorable metallogenic site.2ASTER data is useful in mineralization information extraction.This paper determine the mineralization indicative mineral among mineralization information by Spectral angle mapping results.We can explain alteration phenomenon in the geological process in the angle of remote sensing data,and also we can summary skarn-type remote sensing metallogenic characteristics of the mine.3Measured spectral curve is used to confirm that the abnormal information consistent with the real.We build a database on the measured sample spectral data and draw peak shift、width at half and other geological parameters, and do a macro analysis of the region metasomatism intensity, high and low temperature mineralization.Argue that the contact part of biotite granite and marble contact zone in north of Meilazhu metasomatism is strong and temperature is high.The east has superior ore-forming geological condition.4We do mineralization prognostic in Caima including an iron-antimony mineralization forecast area an iron area and two antimony areas basing on interpretation, alteration information extraction, alteration zoning mode spectra geological parametric analysis geological conditions.