NSF award 2617725 · Western Michigan University

Investigating water-rock interactions in crust beneath the seafloor using the triple oxygen-isotope approach

Final report due

29 December 2029

in 1,168 days · The award ends on 31 August 2029.

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No-cost extension notice21 Aug 2029in 1038 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out29 Dec 2029in 1168 days
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PAPPG 24-1: “financially closed out 120 days after their expiration date”

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So the final report is due by 29 December 2029.

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Award card

Award number: 2617725
Period of support: 15 Sep 2026 – 31 Aug 2029
Amount: $222,575
Awardee: Western Michigan University, Kalamazoo, MI
Program: Marine Geology and Geophysics
Directorate: GEO

Abstract

The entire ocean volume circulates through the oceanic crust beneath the seafloor about every one million years. This project will use a new technique to study the interactions between water and rocks during this process. The triple oxygen-isotope method simultaneously provides constraints on temperature, water volume, and fluid composition. The analyses will resolve, for the first time, the composition of fluids…

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