Hydrothermal alteration mapping of Siberian gold-ore fields based on satellite spectroscopy data

19th International Scientific Symposium in honor of Academician M.A. Usov "Problems of Geology and Subsurface Development"

Ananyev, Yu.S.^1 ; Maskov, A.A.^1 ; Abramova, R.N.^1

National Research Tomsk Polytechnic University, 30 Lenin Ave., Tomsk

634050, Russia^1

关键词: Band ratios;    Bearing structure;    Channel relationships;    Hydrothermal alterations;    Index values;    Satellite image datas;    Spectroscopy data;    Survey data;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/27/1/012001/pdf
DOI  :  10.1088/1755-1315/27/1/012001

来源: IOP

【 摘 要 】

The mapping of the hydrothermal alterations in Urjahskoe and Fedorov-Kedrov gold-ore fields was conducted by applying channel relationship method (band ratio) based on ASTER spectral-zonal satellite image data. It was determined that the calculated mineral indices in ore-bearing structures are zonal. Outer ore-bearing structures revealed increased ferric mineral index values, while inner - high epidote- chlorite- calcite and muscovite- siderite mineral index values. Detected regularities could be used in identifying potential gold-ore bearing areas within identical fields based on remote sensing survey data.