|
Kaitlin's new data on carbonate lithium isotopes in the Early to Middle Triassic, in the aftermath of the end-Permian extinction, is now published in American Journal of Science. Check it out here!
In addition to careful lab work to produce carbonate lithium isotope data, Kaitlin's study compares carbonate lithium isotope data in the Early Triassic from multiple locations in the Tethys Ocean with a record from the Panthalassa Ocean. Lithium isotope values are incredibly low, sometimes below 0‰, indicating unique lithium cycling and diagenesis. The paper proposes that the large difference between high siliciclastic lithium isotope data (previously published) with the near-0‰ carbonate lithium isotope data could indicate a very small Li oceanic reservoir size, resulting in spatially heterogenous seawater Li isotope values. Yay, Kaitlin!
0 Comments
Adam successfully defended his M.S. thesis. We are so proud of you, Adam! We will miss having you in our group (especially resident kitties Panda and Maky).  Kim, along with Laurence Coogan (University of Victoria) and Jeremy Rugenstein (Colorado State), guest-edited this issue in Elements magazine. Check it out!
Read the introductory article here. Congrats to Adam Stone and Fai Chanchai for publishing their first papers!!
Our lab had a productive summer! Gavin De Mars successfully defended his senior thesis and graduated! Kayla Irizarry presented at NAPC, and Adam Stone and Fran Meyer both presented at Goldschmidt. Fran and I collected phosphorite samples from the Phosphoria with collaborator Madeline Marshall and undergraduate students Brayden and Isaac from Albion College in Idaho and Wyoming. Cole McCormick and I brought back lots of dolomites from the Mackenzie Mountains with collaborator Justin Strauss from Dartmouth. We also welcomed Kalev Hantsoo, NASA Postdoctoral Fellow, to our group! Congrats to our wonderful undergraduate researchers, who had a super successful spring! Abigayle Ward graduated in December, 2022 and will be starting a PhD in soil science at the University of Connecticut. Joshua Karas graduated in May, 2023 and will be starting a position with Arcadis. Gabriel Felker successfully submitted and presented his senior thesis this spring and will be graduating at the end of the summer after field camp. Good luck to everyone, we'll miss you!  Spring gathering at Voodoo. Thanks lab friend and collaborator Josh Garber for taking the photo! Not pictured: Kim at GSA, Dr. Chelsie Bowman at GSA, and Kayla Irizarry at SACNAS.
Congrats to Kayla Irizarry, PhD student, on passing her qualifying exam this spring! Additionally, Kayla was awarded a Ford Foundation Predoctoral Fellowship. We are so proud of Kayla! (photo of Kim, Dr. Chelsie Bowman, Kayla, and Fai Chanchai at GSA in Denver in October, 2022)  I am excited that Dr. Cole McCormick has joined our research group as a postdoctoral scholar. Cole comes to Penn State after completing his Ph.D. at the University of Manchester. He hails from Alberta, Canada, and received his B.S. and M.S. degrees from the University of Alberta. He will be leading a range of dolomite-based projects. Welcome, Cole!
Dalton Hardisty and I published a diagenetic modeling paper focusing on carbonated redox proxies. We examine how different styles of diagenesis impact U isotopes, CAS isotopes, the Ce anomaly, iodine-calcium ratios, and more. Check it out (open access!) in Geochimica et Cosmochimica Acta here.
I was also a co-author on two other mass extinction studies! - Congrats to Terry Isson for his work on the potential for reverse weathering to prolong Early Triassic warming following the end-Permian extinction in Science Advances. Read it here. - Congrats to Pulkit Singh for leading an integration of paleontological and I/Ca constraints following the end-Triassic extinction in Geobiology. Read it here. |
