Abstract Details
(2020) Examining Formation and Dissolution of Fe-Rich Incipient Weathering Products Using Field, Laboratory, and Reactive Transport Modeling Approaches
Hausrath E, Feldman A, Luu N, Peretyazhko T, Provow A, Ralston S, Rampe E & Sanchez A
https://doi.org/10.46427/gold2020.979
14g: Plenary Hall, Thursday 25th June 00:45 - 00:48
Elisabeth Hausrath
View abstracts at 10 conferences in series
Anthony Feldman
Ngoc Luu View abstracts at 2 conferences in series
Tanya Peretyazhko View abstracts at 5 conferences in series
Ashley Provow
Silas Ralston
Elizabeth Rampe View all 3 abstracts at Goldschmidt2020 View abstracts at 9 conferences in series
Arlaine Sanchez
Anthony Feldman
Ngoc Luu View abstracts at 2 conferences in series
Tanya Peretyazhko View abstracts at 5 conferences in series
Ashley Provow
Silas Ralston
Elizabeth Rampe View all 3 abstracts at Goldschmidt2020 View abstracts at 9 conferences in series
Arlaine Sanchez
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Submitted by Mohit Melwani Daswani on Monday 22nd June 20:15
[Thank you for your interesting presentation. We want to prioritize questions from the audience over the questions from the conveners, but if there is time and no other questions, please feel free to address these questions.] 1) In one of the slides about the reaction-transport models, it was mentioned that hematite and oxidized minerals would be more abundant at depth than at the surface. Why is that? If the source of water was from the surface, wouldn't the rock layers at depth remain more reduced? 2) Would the modeled mineralogy results change significantly if the source of water was groundwater and not surface weathering? 3) The model that matches the observations closest is the one with acidic pH and increasing temperature with depth. Does the acidic pH of the fluid have any implications for the atmospheric pCO2 content? Does the pH neutralize and change with depth? Also, if I interpreted the graphs correctly, the temperature increases from 1 C to 75 C in about 15 m. Isn't that a steep temperature gradient? Thank you! Mohit
[Thank you for your interesting presentation. We want to prioritize questions from the audience over the questions from the conveners, but if there is time and no other questions, please feel free to address these questions.] 1) In one of the slides about the reaction-transport models, it was mentioned that hematite and oxidized minerals would be more abundant at depth than at the surface. Why is that? If the source of water was from the surface, wouldn't the rock layers at depth remain more reduced? 2) Would the modeled mineralogy results change significantly if the source of water was groundwater and not surface weathering? 3) The model that matches the observations closest is the one with acidic pH and increasing temperature with depth. Does the acidic pH of the fluid have any implications for the atmospheric pCO2 content? Does the pH neutralize and change with depth? Also, if I interpreted the graphs correctly, the temperature increases from 1 C to 75 C in about 15 m. Isn't that a steep temperature gradient? Thank you! Mohit
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