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Identification of Zones of Hydrothermally Altered Rocks Using WorldView-2 Data at the Talman Site (Talmanskaya Area, South-Eastern Transbaikal, Russia)статья
- Авторы: Ishmukhametova V.T., Nafigin I.O., Ustinov S.A., Lapaev D.S., Minaev V.A., Petrov V.A.
- Журнал: Izvestiya - Atmospheric and Oceanic Physics
- Том: 59
- Номер: 12
- Год издания: 2023
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 118
- Последняя страница: 127
- DOI: 10.1134/S0001433823120113
- Аннотация: This work is aimed at the practical application of satellite imagery data for the selection of promising areas during geological exploration work in conditions of medium-low mountainous terrain and a sharply continental climate. The processing results and analysis of WorldView-2 data within the Talmanskaya area are presented in order to identify zones of hydrothermal-metasomatic changes in rocks that are promising for identifying of gold-polymetallic mineralization. The choice of the study area is due to sufficient geological knowledge and the absence of man-made formations that affect the result of processing satellite imagery materials. To increase the spectral information content of the WorldView-2 data, the spectral channel ratio method was used, as a result of which a pseudocolor RGB composite was created that displays the spectral characteristics of objects on the Earth’s day surface, in particular, minerals of the oxide/hydroxide group containing transition iron ions (Fe3+ and Fe3+/Fe2+). A comparison of satellite data processing results along with geological information made it possible to identify spectral anomalies as indicators of the presence of nearore changes, which are an important search criterion for hydrothermal deposits.
- Добавил в систему: Ишмухаметова Венера Тальгатовна