Paper:

2022:

• Wittke A., Gussone N., Derigs D., Teichert B.M.A.: “Ca Isotope Geochemistry in Marine Deep-Sea Sediments of the Eastern Pacific”. Geo-Marine Letters

2020:

• Wittke A., Gussone N., März C., Teichert B.M.A.: ”Evaluating the effect of sampling techniques on Ca concentrations and isotope ratios of extracted marine pore water”. Isotopes in Health and Environmental Studies

2019:

• Shollenberger Q. R., Wittke A., Render J., Mane, P., Schuth S., Weyer S., Gussone, N., Wadhwa, M., Brennecka G.: “Combined mass-dependent and nucleosynthetic isotope variations in refractory inclusions and their mineral separates to determine their original Fe isotope compositions”. Geochimica et cosmochimica acta 263, 215-234.
  

2013:

• Herwartz D., Münker C., Tütken T., Hoffmann J. E., Wittke A. and Barbier B. (2013): “Lu-Hf systematics of fossil biogenic apatite and their effects on geochronology”. Geochimica et Cosmochimica Acta 101, 328-343.

Eingereicht:

• Magna T, Gussone N, Wittke A, Rapprich V, Upadhyay D.: “Calcium isotope systematics in carbonatites – a case study from the Sevattur and Samalpatti carbonatite complexes, south India”. Chemical Geology

In Bearbeitung:

• Wittke A., Gussone N., Teichert B.M.A.: ”Experimental approach of diffusive Ca Isotope fractionation in clays”
• Wittke A., Tütken T., Kindler L., Jöris O., Münker C.: ”Mobility of Pleistocene horses in the Neuwied Basin inferred from intra-tooth isotope analysis”

Vorträge/Poster:

2019:

• IODP Jahrestreffen in Köln: „Ca isotope fractionation during fluid transport through sediment columns – an experimental approach“ (P)

 2018:

• IODP Jahrestreffen in Bochum: “Ca isotope geochemistry in marine deep-sea sediments of the Eastern Pacific” (V)

2017:

• IODP Jahrestreffen in Braunschweig: “Effect of sampling techniques on Ca concentrations and isotope ratios of marine porewaters” (P)
• DMG Jahrestreffen in Bremen: “Ca isotope geochemistry in marine deep-sea sediments of the Eastern Pacific” (V)
• AGU Jahrestreffen in New Orleans, USA: “Ca isotope geochemistry in marine deep-sea sediments of the Eastern Pacific” (P)

2016:

• IODP Jahrestreffen in Heidelberg: “Fractionation of Ca isotopes during transport and recrystallization processes in marine deep-sea sediments” (P)
• LWL Museum für Naturkunde Münster: “Heimische Greifvögel – Arten, Ökologie und Schutzmaßnahmen” (V)

2014:

• Marum Bremen, Germany: “Reconstruction of the late Pleistocene horses and red deer mobility of the Neuwied Basin by using the analyses of stable isotopes (C, O, Sr) of the tooth enamel” (V)

2013:

• Max-Planck-Institut für Ornithologie Radolfzell: “Isotopegeochemical analyses of (fossil) biogenic apatite” (V)