Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Gypsum-Jarosite Incrustation on Limestone: An Unusual Occurrence


Affiliations
1 Geological Oceanography Division, NIO, Dona Paula, Goa, India
2 Department of Civil Engineering, Indian Institute of Technology, Kanpur-208016, India
 

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The joint planes of massive limestone at Sahasradhara, Dehra Dun have a thin crust containing jarosite with gypsum blades. This occurrence is different from the usual chemical weathering in a ferruginous environment. An evaluation of the chemistry of local river and groundwater suggests that these minerals form by evaporation in dry seasons.
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  • Gypsum-Jarosite Incrustation on Limestone: An Unusual Occurrence

Abstract Views: 193  |  PDF Views: 120

Authors

K. H. Vora
Geological Oceanography Division, NIO, Dona Paula, Goa, India
B. C. Raymahashay
Department of Civil Engineering, Indian Institute of Technology, Kanpur-208016, India

Abstract


The joint planes of massive limestone at Sahasradhara, Dehra Dun have a thin crust containing jarosite with gypsum blades. This occurrence is different from the usual chemical weathering in a ferruginous environment. An evaluation of the chemistry of local river and groundwater suggests that these minerals form by evaporation in dry seasons.