Physical Sciences and Mathematics Commons^™

Using Ams To Help Interpret Glaciogenic Deposits Of The Late Paleozoic Ice Age In The Paraná Basin, Brazil, James Anthony Amato

Theses and Dissertations

The term ‘diamictite’ is used as a lithologic descriptive term without assigning a particular origin to a rock unit as either glacial deposits (till), proglacial, glacially influenced deposits (resulting from meltwater plumes and ice rafted debris), or mass transport deposits (glacial or non-glacial related). While in some cases, it is possible to delineate between the origins of diamictites, in other instances, weathering and lack of exposures make it difficult to determine. In general, the occurrence of diamictites within the Gondwana succession has been traditionally used to indicate the occurrence of subglacial deposition despite the potential occurrence of other depositional modes. …

Deformation And Fluid Interactions In The Mineral Fork Diamictites, Antelope Island, Utah, Kimberly Rose Johnson

Theses and Dissertations

ABSTRACT

DEFORMATION AND FLUID INTERACTIONS IN THE MINERAL FORK DIAMICTITES,

ANTELOPE ISLAND, UTAH

by

Kimberly R. Johnson

The University of Wisconsin-Milwaukee, 2013

Under the Supervision of Professor Dyanna Czeck

Diamictite from the Mineral Fork Formation on Antelope Island, Utah was deformed to various degrees on the footwall of the Willard Thrust Fault during the Sevier Orogeny. The diamictite contains clasts of differing strength resulting in quartzite clasts deformed the least, pink granitic clasts deformed to a greater degree, and softer green gneissic clasts deformed the most. The pink granitic and green gneissic clasts have similar compositions, but deform differently. This …