The groups main research interests is co-evolution of life and the global environment through Earth history.
Section for GeoBiology
The aim of the Geobiology Section is to study the interactions between Earth’s lithosphere, atmosphere, hydrosphere and biosphere, as expressed in the geologic record and in extant environments. Life’s activities have had a defining influence of the evolution of Earth. Insight into the interactions between life and Earth’s physical environments is the key to managing contemporary global problems, decoding the origins of life, and for finding life elsewhere in the universe.
Head of Section: Tais Wittchen Dahl
Our research is based on decoding information about Earth’s surface environments stored in geologic materials. We study structures from nanometre to planetary length-scales developed during timespans from seconds to billions of years. Our main techniques are combinations of field geology, Earth system modelling and the development of new tools applied at the elemental, isotopic, molecular and mineralogical scale.
Pioneering the use of heavy metal stable isotopes to describe the oxygenation state of ancient oceans and understanding global-scale biogeochemical feedbacks at play in the Earth system:
Dahl TW, Connelly JN, Kouchinsky A, Gill BC, Månsson SF, Bizzarro M. Reorganization of Earth's biogeochemical cycles briefly oxygenated the oceans 520 Myr ago. Geochemical Perspectives Letters 3, 210–220 (2017).
Studying Earth’s earliest environments and the role of life in defining first order parameters in the Earth system:
Rosing, M.T., Bird, D.K., Sleep, N.H. and Bjerrum, C. J., 2010. No paradox under the faint early Sun. Nature 464, 744-747.
Using nano-geochemistry to document the antiquity of life on Earth:
Hassenkam, T., Andersson, M. P., Dalby, K. N., Mackenzie, D. M. A. and Rosing, M. T., 2017. Elements of Eoarchean life trapped in mineral inclusions. Nature 548, 78–81. doi:10.1038/nature23261
The groups main research interests is to understand causal drivers in biodiversity change with a particular focus on the early Palaeozoic.
The overall goal of the Hassenkam Group is to understand how life originated on Earth