Kathleen Scheiderich
United States Geological Survey
16 Papers
18 Citations
Kathleen Scheiderich is an academic researcher from United States Geological Survey. The author has contributed to research in topics: Isotope fractionation & Water column. The author has an hindex of 8, co-authored 14 publications. Previous affiliations of Kathleen Scheiderich include University of Delaware & Commonwealth Scientific and Industrial Research Organisation.
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Papers
Copper speciation and isotopic fractionation in plants: uptake and translocation mechanisms.
Brooke M. Ryan,Jason K. Kirby,Fien Degryse,Hugh H. Harris,Mike J. McLaughlin,Mike J. McLaughlin,Kathleen Scheiderich +6 more
TL;DR: The lack of isotopic discrimination in oat plants suggests that Cu uptake and translocation are not redox selective, and the presence of isotopically light Cu in tomatoes is attributed to a reductive uptake mechanism, andThe isotopic shifts within various tissues are attributed to redox cycling during translocation.
152
Global variability of chromium isotopes in seawater demonstrated by Pacific, Atlantic, and Arctic Ocean samples
Kathleen Scheiderich,Kathleen Scheiderich,Marghaleray Amini,Marghaleray Amini,Chris Holmden,Roger Francois +5 more
TL;DR: In this article, the authors presented multiple sites in the Arctic Ocean, and three locations in the Atlantic and Pacific Oceans, where the highest δ53Cr values occur in Pacific-sourced waters, which also have the lowest Cr concentration.
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Molybdenum isotope, multiple sulfur isotope, and redox-sensitive element behavior in early Pleistocene Mediterranean sapropels
TL;DR: In a recent study as mentioned in this paper, the same authors used geochemical redox proxies (Re, Mo, Mo isotopes, V, Fe/Al, and multiple S isotopes) in 8 sapropels from the Pleistocene to confirm water column euxinic conditions of varying intensity during sapropel deposition.
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Molybdenum isotope fractionation by cyanobacterial assimilation during nitrate utilization and N2fixation
TL;DR: A reaction network model for Mo isotope fractionation is presented that demonstrates how Mo transport and storage, coordination changes during enzymatic incorporation, and the distribution of Mo inside the cell could all contribute to the total biological fractionations.
59
A synthesis of Late Oligocene through Miocene deep sea temperatures as inferred from foraminiferal Mg/Ca ratios
Katharina Billups,Kathleen Scheiderich +1 more
- 03 Apr 2012
TL;DR: In this article, published benthic foraminiferal Mg/Ca records have been compiled that span the latest Oligocene through Miocene, including new data for the South Atlantic, and it is concluded that the early Miocene climate was generally warmer than today and that by the late Miocene temperatures approached modern values.
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