PhD Position - Structural Geology of the Chicxulub Impact Crater

The Department of Geology at the University of Freiburg is currently offering a PhD Position (36 months, E13 65%).

We are searching for a student with a degree in geosciences, preferably with a background in structural geology or similar, as well as an interest in impact craters. You will be part of a multi-disciplinary group of researchers and PhD students from around the globe working on drill cores and datasets from the recent IODP/ICDP Exp. 364 drilling of the Chicxulub impact crater in Yucatan, Mexico.

Full project title: Peak ring formation at Chicxulub: Unraveling its deformation path and rock mechanical behavior
Starting date: November 1, 2017, or as soon as filled
Duration: Three years fixed-term appointment
Employment Type: Part-time (65%)
Salary: TV-L13 (German collective agreement for public employees)
Location: Freiburg

The main focus of the PhD position is to decipher the structural mechanisms that formed Chicxulub's peak ring, and to understand how rocks are weakened during large impacts to allow them to collapse and form relatively wide, flat craters.

Methods applied for the evaluation of the samples will include mesoscale analysis of the cores using image analysis and fault kinematic methods, as well as microscale analysis of kinematics, shock barometry, fragment size analysis (polarized light microscopy, U-stage, SEM, EBSD). Furthermore, quasi-static mechanical testing of samples in a loading frame and dynamic mechanical testing of samples using a Split-Hopkinson pressure bar will be applied.

This PhD offers an ideal and unique opportunity to become part of an interactive, multidisciplinary network of scientists in the fields of impact cratering, structural geology, and planetary science.

Please submit applications (including motivation, CV, graduation certificates, and three references) electronically as a single PDF file online by September 27, 2017 to Dr. Michael Poelchau (

posted: 14 September 2017     Please mention EARTHWORKS when responding to this advertisement.