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Edited by Katherine H. Freeman, Pennsylvania State University, University Park, PA, and approved September 22, 2019 (received for review August 8, 2019)
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- Published in issue November 5, 2019.
- Published first October 21, 2019.
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Author Information
- Hyejung Leea,
- Valier Galyb,
- Xiaojuan Fengc,
- Camilo Pontona,d,
- Albert Galye,
- Christian France-Lanorde, and
- Sarah J. Feakinsa,1
- aDepartment of Earth Sciences, University of Southern California, Los Angeles, CA 90089;
- bDepartment of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543;
- cState Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 100093 Beijing, China;
- dDepartment of Geology, Western Washington University, Bellingham, WA 98225;
- eCentre de Recherches Pétrographiques et Géochimiques, CNRS, Université de Lorraine, 54506 Vandoeuvre-lès-Nancy, France
Edited by Katherine H. Freeman, Pennsylvania State University, University Park, PA, and approved September 22, 2019 (received for review August 8, 2019)
Footnotes
- ↵1To whom correspondence may be addressed. Email: feakins{at}usc.edu.
Author contributions: H.L., V.G., C.P., A.G., C.F.-L., and S.J.F. designed research; H.L., V.G., X.F., C.P., A.G., C.F.-L., and S.J.F. performed research; H.L., V.G., X.F., C.F.-L., and S.J.F. analyzed data; and H.L., V.G., and S.J.F. wrote the paper.
The authors declare no competing interest.
This article is a PNAS Direct Submission.
Data deposition: Datasets reported in this paper are also available via the National Oceanic and Atmospheric Administration Paleoclimatology database (https://www.ncdc.noaa.gov/paleo-search/study/27770).
This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10.1073/pnas.1913714116/-/DCSupplemental.
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- Earth, Atmospheric, and Planetary Sciences
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