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REMINDER ANTHONY CHAPPAZ Earth and Atmospheric Sciences Central Michigan University WEDNESDAY, September 18, 13:30 (EDT) "Molecular geochemistry of trace elements: Combining synchrotron-based techniques with systematic analyses to study heterogenous systems" Register in advance for this meeting: https://bnl.zoomgov.com/meeting/register/vJIsd-mgqzsuGDHvbSLQg-JnX85sBFha7fs Time conversion Link: https://www.worldtimebuddy.com/<https://urldefense.com/v3/__https:/gcc02.safelinks.protection.outlook.com/?url=https*3A*2F*2Fwww.worldtimebuddy.com*2F&data=05*7C01*7Cgenoa.blankenship*40pnnl.gov*7C67ffe754733240e42d3e08da641ba4bc*7Cd6faa5f90ae240338c0130048a38deeb*7C0*7C0*7C637932367171794987*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=aSe2IUSomjge9ZW6zXdQ81fPzxpg8eawtRkoiOEJdXM*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSU!!P4SdNyxKAPE!Fd5kIAbibocFpkUaEbpqZZGm8tw-xiqb5oC4sfOklv6Kbbf-T3RvUobMSLrzyXNbfNVT9vMxJGuY1RsSqbc6MjpIABre1Q$> Abstract: Many redox sensitive trace elements present in organic-rich sedimentary rocks, such as black shales, are (1) recognized critical elements required to sustain the Green Energy Transition and (2) paleo-redox proxies used to reconstruct the Earth’s oxygenation. Either economic geologists exploring the potential of subsurface systems, or deep time geoscientists investigating the first traces of oxygen recorded by geological settings billion years ago, keep applying bulk geochemistry analyses of trace elements. This common approach relies on measuring the concentration and, when possible, the isotope ratio and has led to significant findings. Yet, major limitations, like strong heterogeneities, exist and hamper our capabilities to either develop new sustainable mining methods or capture subtle changes in redox conditions that occurred in ancient oceans. Integrating synchrotron-based techniques to enhance our understanding of trace element geochemistry can lead to major breakthroughs. Three examples focusing on chromium, molybdenum and vanadium geochemistry will be presented during my lecture. ================= Vivian Stojanoff, PhD Education, Training, Outreach User Program p 1(631) 344 8375 e lifescie...@bnl.gov<mailto:lifescie...@bnl.gov> w https://www.bnl.gov/ps/lifesciences/<https://www.bnl.gov/ps/lsbr/> Address: Center for Biomolecular Structure National Synchrotron Light Source II Building 745 Brookhaven National Laboratory Upton NY 11973 ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
