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(2020) Subsurface 18O Exchange at Low Temperatures: The (GMWL) Plot Thickens
Warr O, Giunta T, Onstott T, Kieft T, Harris R, Nisson D & Sherwood Lollar B
The author has requested that this abstract is not discussed on social media.
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14e: Plenary Hall, View in program
Listed below are questions that have been submitted by the community that the author will try and cover in their presentation. To submit a question, ensure you are signed in to the website. Authors or session conveners approve questions before they are displayed here.
It's clear from your slides that this is an exciting pattern of processes you've established. From what I gathered, you're not proposing a singular, central "common ancestor" brine worldwide, but instead a commonality of processes worldwide that can cause similar isotopic effects on the subsurface brines they contain. Further, as opposed to previous processes that tend to focus on mixing trends that impact both 18O AND 2H, you highlight processes that decouple these isotopes from each other. Is that a reasonable takeaway of what you've shown here?
Does your global model (as applied to Kidd Creek) imply that fracture fluid isotope compositions are attained exclusively through low-temperature oxygen exchange between metamorphic waters and silicate and carbonate minerals?
Can you explain in more detail the basis of the model equation (2nd to the last slide)? How do you determine the f and ??
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