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자료유형
학술저널
저자정보
Kailasa Pandarinath (Universidad Nacional Autónoma de México)
저널정보
한국지질과학협의회 Geosciences Journal Geosciences Journal Vol.26 No.3
발행연도
2022.6
수록면
415 - 442 (28page)
DOI
10.1007/s12303-021-0042-2

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Applicability of the Chemical Weathering Indices (CWIs) in an identification of fresh and hydrothermally altered rocks has been carried out by applying them to the rocks with known alteration status. The application clearly indicated that all 47 CWIs have correctly identified all fresh rocks (success rate, SR ~100%). Similarly, most of the CWIs are correctly identified the hydrothermally altered rocks (SR of 78?100%), whereas the proper reasons are identified for the remaining CWIs for their comparatively lower success rates. The study clearly shows an applicability of CWIs in the identification of fresh and hydrothermally altered igneous rocks. As an application to identify the status of the hydrothermal alteration (least or intensive) of the surface rocks from geothermal areas, all 47 CWIs are applied to the rocks obtained from the surface areas of the six main geothermal fields of Mexico. Most of the indices have shown SR of ≥ 80% in identifying fresh and hydrothermally altered rocks of these geothermal fields. Based on the SR of CWIs, the 15 best performer CWIs are identified for the Mexican geothermal fields. The present work clearly reveals that if cautiously applied, by considering the existing differences between the weathering and hydrothermal alteration processes, most of the weathering indices may be successfully applied in correctly identifying the intensity of hydrothermal alteration of surface rocks of geothermal areas.

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