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Article
Metamorphic Temperature Investigation of Coexisting Calcite and Dolomite Marble––Examples from Nikani Ghar Marble and Nowshera Formation, Peshawar Basin, Pakistan
Journal of Earth Science
  • Muhammad Fahad, COMSATS Institute of Information Technology
  • Yaseen Iqbal, University of Peshawar
  • Mohammad Riaz, University of Peshawar
  • Rick Ubic, Boise State University
  • Simon A.T. Redfern, University of Cambridge
Document Type
Article
Publication Date
12-1-2016
Abstract
Using marble samples from the Nikani Ghar marble and Nowshera Formation from Northern Pakistan the determination of the temperature of metamorphism was undertaken with the help of calcite-dolomite solvus geothermometer. Two types of marbles, that is, calcite-dolomite marble and quartz-bearing calcite-dolomite marble were selected. Petrographic and scanning electron microscope analysis of dolomite samples indicated different grain sizes. X-ray diffraction technique indicated the calcites MgCO3 content up to 7.93 mol.%. Nikani Ghar marble samples have shown lower contents of MgCO3 as compared to samples from Nowshera Formation. The calcite-dolomite-quartz marble has also showed relatively lower MgCO3 content and hence rather low temperature (~500 °C). The temperature reached during peak metamorphism of the investigated marble occurrence, based on calcitedolomite solvus was 628 °C. Metamorphic temperatures derived from the present study were shown as a linear graph and values were in good agreement with the published literature.
Citation Information
Muhammad Fahad, Yaseen Iqbal, Mohammad Riaz, Rick Ubic, et al.. "Metamorphic Temperature Investigation of Coexisting Calcite and Dolomite Marble––Examples from Nikani Ghar Marble and Nowshera Formation, Peshawar Basin, Pakistan" Journal of Earth Science (2016)
Available at: http://works.bepress.com/rick_ubic/105/