Remote sensing study of the Tappeh-Morgaris area in the west of Yazd using ASTER images: Economic geology point of view

Document Type : Original Article

Authors

1 Department of Economic Geology, Tarbiat Modares University, Tehran, Iran

2 Department of Economic Geology, Tarbiat Modares University

3 Iran Mineral Materials Procurement and Production Company (IMPASCO), Tehran, Iran

10.48306/jgrs.2025.531643.1015
Abstract
The Tappeh Morgaris deposit is located in the west of Yazd province, approximately 30 kilometers southwest of Nodoushan. This area, situated in the central part of the Urumieh-Dokhtar magmatic arc, comprises Upper Permian limestone to dolomitic limestone, Eocene volcanic and sedimentary rocks (including tuff, lava flows, sandstone, siltstone, shale), and Quaternary deposits. The Permian and Eocene units are intruded by post-Eocene granitoid bodies. In this study, ASTER images were employed to investigate hydrothermal alteration and iron mineralization within the study area. The remote sensing workflow included preprocessing, false color composite, band ratioing, Spectral Angle Mapper (SAM) classification for mineral and alteration mapping, and structural enhancement using filtering techniques. The goal of this research is to conduct remote sensing investigations in the study area to examine mineralization and alterations, and to validate and verify these findings through field observations and laboratory analyses (including hand specimens and thin sections).

Keywords


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