Browsing by Author "Steltenpohl, Mark"

Now showing items 21-28 of 28

Practical Application of Petrographic Methods to Crushed Stone Aggregate Exploration: Comparing Microstructures and Grain Boundaries to Physical Quality Testing of Aggregate

Nuno, Nicholas (2015-12-14)

This research attempts to compare and correlate microscopic properties of aggregate material to the aggregates physical engineering properties. Material was collected and tested to obtain physical and mechanical properties ...

Stratigraphy, Ore Mineralogy, Geochemistry, and Genesis of Gold-Bearing Quartz Veins at the Hog Mountain Tonalite, Southwestern Appalachians, USA

Kline, Anabelle (2019-04-24)

Hog Mountain of the southern Appalachians is a gold deposit in the eastern Blue Ridge of Alabama. The mineralized quartz veins found there have an average Au grade of 0.14 oz/t (maximum: 2.4 oz/t Au) and occur within a ...

Structural, Isotopic, and Kinematic Analysis of Eclogite-Facies Shear Zones and Associated Structures, Lofoten, North Norway

Kassos, Gabriel (2008-08-15)

Three variably retrograded, fluid-mediated eclogite occurrences on Flakstadøy, in the Lofoten archipelago of north Norway, display two structurally-controlled styles that are rheological inverses: competent lenses and ...

Structure and timing of the Austerfjord thrust and related shear zones, Hinnøy, north Norway: Implications for late-stage Caledonian tectonic evolution

Key, Thomas (2010-05-07)

The Austerfjord thrust on central Hinnøy, north Norway is reexamined in its context as the structurally lowest Caledonian thrust preserved in the arctic Norwegian Caledonides. The discovery of the Vassvika group metasedimentary ...

Tectonic evolution of a Caledonian-aged continental basement eclogite terrane in Liverpool Land, East Greenland

Buchanan, John (2008-05-15)

Liverpool Land is located in an interior position within the East Greenland Caledonides. Due to the remoteness of the field locality, very little work has been published on the rocks and structures of Liverpool Land. The ...

U-Th Dating of Zircons from a Holocene Volcanic Eruption (Dayingshan Volcano, Tengchong Volcanic Field): Insights into Magma Chamber Storage

Tucker, Ross (2011-05-02)

The Tengchong volcanic field is located along the southeastern margin of the Tibetan Plateau and has shown active volcanism throughout the Cenozoic. Only three volcanoes, however, have erupted more recently in the Holocene. ...

Using Microtremors to Assess Site Characteristics in the New Madrid Seismic Zone

Hardesty, Kelli (2008-08-15)

Results are presented from a study in the New Madrid seismic zone (NMSZ) utilizing the microtremor method. The study analyzes and interprets horizontal to vertical (H/V) spectral ratios to determine resonant periods, wave ...

Volatile and Sr Isotope Analysis of Melt Inclusions from the Bandelier Tuff, Valles Caldera, New Mexico: Insights into Pre-Eruptive Magma Conditions

Cartwright, Jennifer (2018-03-07)

The Valles Caldera, located in northwest New Mexico, is one of three caldera volcanoes in the United States that is still active today. Calderas have the largest, most cataclysmic eruptions that result in large bowl-shaped ...