Physical Sciences and Mathematics Commons^™

The Rice Bay And Northeast Bay Gneiss Domes: A Kinematic Study Of Competent Rock Bodies In The Rainy Lake Region Of Ontario, Canada, Jane Block

Theses and Dissertations

The Rice Bay and Northeast Bay gneiss domes (RBD and NEBD) are two tonalitic rock units located in the Archean Rainy Lake zone of the Superior Province. The Rainy Lake zone acts as a boundary between two subprovinces, accommodating transpression, significant shortening and dextral motion in its lithologic assemblage. This study contributes to understanding how deformation is partitioned in heterogeneous terranes, and also demonstrates a practical method of kinematic analysis. Foliations, lineations, shear zones, tension gashes, quartz veins, mafic enclaves, and folded and boudined veins were all utilized in the kinematic analysis. Foliation orientations in both domes are consistent with …

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 …

Development Of Green Solvent Modified Zeolite (Gsmz) For The Removal Of Chemical Contaminants From Water, Elizabeth Stapleton

Theses and Dissertations

Sorption represents an important strategy in the remediation of groundwater contamination. As a naturally-occurring mineral with large cation exchange capacity, zeolite is negatively charged and has been widely used as an inexpensive and effective sorbent for the removal of positively charged contaminants. The negative charges of zeolite, however, make it generally ineffective in the sorption of anionic contaminants such as chromate and arsenate. In order to improve the capacity for sorption of anionic species, the surface charge of the zeolite must be modified. Cationic surfactants can be used to alter the surface charge of the minerals so that the negatively …

Re-Examination Of Changes In Fluvial Stacking Pattern Across The P-T Boundary In The Central Transantarctic Mountains, Antarctica, Danielle Sieger

Theses and Dissertations

A change in fluvial style and a change in the stacking pattern of fluvial channel sandstone bodies occur across the Buckley‒Fremouw formational contact in the central Transantarctic Mountains in Antarctica. Strata in the Buckley Formation are characterized by thick floodplain deposits in the Middle to Upper Permian Buckley Formation; whereas, stacked interconnected sandstone bodies occur in the Triassic Fremouw Formation (Barrett et al., 1986; Isbell & Macdonald, 1991a, 1991b; Collinson et al., 1994; Isbell et al., 1997; 2005). Such changes in fluvial stacking patterns have been attributed to changes in the creation of accommodation within basins due to changes in …

Late Paleozoic Glaciation And Ice Sheet Collapse Over Western And Eastern Gondwana: Sedimentology And Stratigraphy Of Glacial To Post-Glacial Strata In Western Argentina And Tasmania, Australia, Lindsey C. Henry

Theses and Dissertations

The late Paleozoic ice age (LPIA; 345-280 million years ago) provides the last complete record of a major deglaciation on a vegetated Earth, and therefore can serve as a proxy for Earth's inevitable transition out of its present glaciated state. This project analyzes climate change during and following the LPIA using two different approaches:

1) Detailed sedimentology analyses of five glacially-influenced formations in Argentina and Australia in order to determine the size and thermal regime of glaciers during the LPIA.

2) An investigation of massive volcanism along the Panthalassan margin of Gondwana as a source of CO2 that may have …

Interpreting The Paleoenvironmental Context Of Marine Shales Deposited During The Cambrian Radiation: Global Insights From Sedimentology, Paleoecology, And Geochemistry, Tristan Kloss

Theses and Dissertations

Many Cambrian marine shales are traditionally thought to have been deposited under dysoxic or anoxic conditions based upon interpretations of sedimentological and ichnological fabrics. Recently a number of geochemical studies have suggested the opposite, that some Cambrian marine shales were deposited under slightly oxic to well-oxygenated conditions. Despite the significant implications redox conditions have for the paleoenvironment, paleoecology, and taphonomy of Cambrian shales, rarely are these disparate sedimentological and geochemical approaches combined for direct comparisons in a singular study of Cambrian shales. A multidisciplinary approach is used here, combining sedimentological, paleoecological, and geochemical approaches, for re-interpreting the paleoenvironmental conditions of …