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Thorbjorg Sigfusdottir

In the past few decades the volume of research into glacier induced deformation (glaciotectonism) has increased dramatically, revealing a close relationship between glacitectonism and sedimentation. Detailed analysis of glaciotectonic deformation structures can yield important information on glacial processes and ice sheet dynamics, and help resolve stratigraphical problems.

The main objective of this project is to unravel the glacial history of lower Borgarfjörður, Western Iceland, and develop a model of past glacier dynamics. Glaciotectonic sediments and landforms will by studied using sedimentological and macro-and microscale structural analysis, combined with geophysical methods.

Fieldwork will focus upon polydeformed glacial sediments of Bølling-Allerød age exposed in the 6-km long and up to 40 m high Melabakkar-Ásbakkar coastal cliffs. Previous studies suggest that these sediments were deformed as the Borgarfjörður ice stream advanced (surged) after a rapid ice shelf collapse during the early Bølling stage, making this the only known advance of that age in Iceland.

Sidansvarig:
Thorbjorg Sigfusdottir
E-post: thorbjorg [dot] sigfusdottir [at] geol [dot] lu [dot] se

Doktorand

Kvartärgeologi

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