EVALUATING CROSTA TECHNIQUE FOR ALTERATION MINERAL MAPPING IN MALANJKHAND COPPER MINES, INDIA

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

Guha, S.^1¹ 

[1] Department of Applied Geology, National Institute of Technology Raipur, Raipur, India^1

关键词: Crosta technique;    Landsat;    Hydroxyl;    Carbonate;    Iron oxide;   

DOI  :  10.5194/isprs-archives-XLII-5-251-2018

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

Landsat-8 Operational Land Imager (OLI) data has been successfully employed in the field of mineral exploration to detect important minerals. In this study, Crosta technique was applied to identify the diagnostic features of hydroxyl minerals, carbonate minerals and iron oxides in Malanjkhand copper mines, India. The Crosta technique was applied to six [blue, green, red, near-infrared (NIR), shortwave infrared1 (SWIR1), shortwave infrared2 (SWIR2) bands and two sets of four (blue, red, NIR, SWIR1; and blue, near-infrared, SWIR1, SWIR2) bands of OLI data. Results show that the areas with alteration zones are enhanced much better by using six bands of OLI data. The alteration differences are examined with the Crosta technique using four band combinations. Crosta technique is very useful in generating the images of hydroxyl minerals, carbonate minerals, and iron oxides.

【 授权许可】

CC BY