University of Cambridge > Talks.cam > Sedgwick Club talks > Sourcing Antarctic ice rafted debris: potential and pitfalls for recording past ice sheet dynamics

Sourcing Antarctic ice rafted debris: potential and pitfalls for recording past ice sheet dynamics

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Lois Salem.

The age, composition and shifts in the provenance of ice rafted debris can potentially independently test models for the past evolution of ice sheets. Interpreting Antarctic derived material is, however, compromised by its largely unknown geology, an apparent lack of suitable provenance techniques and an incomplete understanding of subglacial processes. As shall be shown, possible solutions to these shortcomings can come through measuring the Pb isotopic composition of ice rafted feldspars. The resulting improved provenance signal can help identify regions where subglacial erosion has occurred but ultimately, any interpretation from ice rafted material must be treated with caution until the concealed geology is better understood.

This talk is part of the Sedgwick Club talks series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2019 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity