- Sponsor Seminars
These are scheduled events to help delegates test out the tools and platform we will be using for the Q&A and other events at the conference.
Our workshop program provides training and teaching in topics across geochemistry and related fields. We are currently liaising with the workshop organisers to ascertain if any workshops can become virtual. Any updates will be added to this page.
Social Event Locations
These are locations for the conference social events.
(2020) Spatial and Temporal Variations in Mantle Source and Subduction Contributions in the Southern Cascade Arc: Insights from Mafic Magma Geochemistry
Johnson E, Shaffer J, Cole M, Ramos F & Calvert A
The author has not provided any additional details.
05d: Room 2, 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.
Hi Emily, very nice presentation. Have you calculated the contribution of depleted and enriched mantle and is there a time relationship and/or geographic variation in the different mantle contributions?
Hi Chiara, thank you! The short answer is yes: there mainly seems to be a geographic variation in the mantle, with the depleted mantle found in the southern part of Oregon/northern California. North of Crater Lake (into Central Oregon) there seems to be a shift to the more enriched mantle. There do not appear to be any temporal trends, except for the fact that the central Oregon volcanism is the youngest in the arc (and tapping the more-enriched mantle)
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