Ann-Kathrin Kraemer

Arbeitsbereich Mineralogie-Petrologie
Doktorandin
Raum N4
12249 Berlin
Professional Experience
since 06/2020
Doctoral candidate, Freie Universität Berlin
Education
10/2017 - 04/2020
Master student in Geosciences with major in “Planetology” at Westfälische Wilhelms-Universität Münster
Thesis: “Does acid washing disturb isotope chronometers in meteorites?”
Supervisors: Prof. Erik E. Scherer, Ph.D., Prof. Dr. Andreas Stracke
10/2014 - 09/2017
Bachelor student in Geosciences at Westfälische Wilhelms-Universität Münster
Thesis: “Classification and characterization of new lunar meteorites”
Supervisor: Apl. Prof. Dr. Addi Bischoff, Dr. Knut Metzler
11/2019 – 01/2020
Student Assistant to Prof. Erik E. Scherer, Institute for Mineralogy, Westfälische Wilhelms-Universität Münster
12/2017 – 11/2018
Student Assistant to Prof. Addi Bischoff, Institute for Planetology Westfälische Wilhelms-Universität Münster
Current research interests
In this research project we will investigate mass-dependent stable isotope variation of the volatile metals Zn, Cu, and K in refractory inclusions of carbonaceous chondrites.
Carbonaceous chondrites are undifferentiated meteorites and remnants of the early stages of planet formation, so they can be used to help constrain processes in the solar nebular. Different groups of carbonaceous chondrites show depletions in volatile element contents to various degrees. Refractory inclusions are one of the components of carbonaceous chondrites. Calcium-Aluminum-rich inclusions, a subtype of refractory inclusions, are the oldest dated objects in the solar system.
With the tool of mass-dependent stable isotope fractionations we want to investigate the origin of the observed volatile element depletions in carbonaceous chondrites in general and investigate the volatile element content in refractory inclusions in particular. One goal of our research is to investigate whether the differing abundances of carbonaceous chondrite components in carbonaceous chondrite groups, particularly of refractory inclusions, correlate with observed trends of volatile element depletion and stable isotope compositions.
To help investigate the origin of the stable isotope composition in refractory inclusions, electron beam methods will be used to provide the petrologic context to constrain the environment in which volatile elements were incorporated into these inclusions of different carbonaceous chondrite groups.
This research project is project B8 “Is the depletion of the moderately volatile elements in the Earth inherited from nebular processes?” of the Collaborative Research Center TRR 170 – Late Accretion Onto Terrestrial Planets and so is part of a collaboration between Freie Universität Berlin, Westfälische Wilhelms-Universität Münster, Technische Universität Berlin, Deutsches Zentrum für Luft- und Raumfahrt Berlin, and Museum für Naturkunde Berlin.