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Browsing Research and Publications - Department of Geological Sciences by Title

Now showing items 20-32 of 32

Sclerochronological Measures of Seasonality at a Late Woodland Mound on the Mississippi Gulf Coast

Blitz, John H.; Andrus, C. Fred T.; Downs, Lauren E. (2014-10)

Seasonality of site occupation has been an important issue in the archaeology of precolumbian coastal populations in the U.S. Southeast. Sclerochronological oxygen isotope measurements to estimate season of capture were ...
Seasonal Shell Growth and Longevity in Donax Variabilis from Northeastern Florida: Evidence from Oxygen Isotopes

Jones, Douglas S.; Quitmyer, Irvy R.; Andrus, C. Fred T. (2004)

The variable coquina clam, Donax variabilis, is one of the most common inhabitants of exposed sandy beach intertidal and shallow subtidal zones in the southeastern United States. Its exceptional burrowing and migratory ...
Seismic Velocity Structure and Depth-Dependence of Anisotropy in the Red Sea and Arabian Shield from Surface Wave Analysis

Hansen, Samantha E.; Gaherty, James B.; Schwartz, Susan Y.; Rodgers, Arthur J.; Al-Amri, Abdullah M. S. (2008-10-14)

We investigate the lithospheric and upper mantle shear wave velocity structure and the depth-dependence of anisotropy along the Red Sea and beneath the Arabian Peninsula using receiver function constraints and phase ...
Sm-Nd Garnet Ages for Granulite and Eclogite in the Breaksea Orthogneiss and Widespread Granulite Facies Metamorphism of the Lower Crust, Fiordland Magmatic Arc, New Zealand

Stowell, Harold H.; Schwartz, J. J.; Klepeis, K. A.; Hout, C.; Tulloch, A. J.; Koenig, A. (2017-10-11)

Sm-Nd garnet and U-Pb zircon ages for eclogite and granulite from the Breaksea Orthogneiss provide a detailed chronology for pluton emplacement and subsequent thermal history of the lower arc crust exposed in Fiordland, ...
The Tempo of Continental Arc Construction in the Mesozoic Median Batholith, Fiordland, New Zealand

Schwartz, Joshua J.; Klepeis, Keith A.; Sadorski, Joseph F.; Stowell, Harold H.; Tulloch, Andy J.; Coble, Matthew A. (2017-01-24)

We investigate the temporal record of magmatism in the Fiordland sector of the Median Batholith (New Zealand) with the goal of evaluating models for cyclic and episodic patterns of magmatism and deformation in continental ...
Thermochronology of Extensional Orogenic Collapse in the Deep Crust, Fiordland, New Zealand

Schwartz, Joshua J.; Stowell, Harold H.; Klepeis, Keith A.; Tulloch, Andy J.; Kylander-Clark, Andrew R.C.; Hacker, Bradley R.; Coble, Matthew A. (2016-04-20)

The exhumed Fiordland sector of Zealandia offers a deep-crustal view into the life cycle of a Cordilleran-type orogen from final magmatic construction to extensional orogenic collapse. We integrate U-Pb thermochronologic data ...
Upper Mantle Seismic Anisotropy beneath the Northern Transantarctic Mountains, Antarctica from PKS, SKS, and SKKS Splitting Analysis

Graw, Jordan H.; Hansen, Samantha E. (2017-02-12)

Using data from the new Transantarctic Mountains Northern Network, this study aims to constrain azimuthal anisotropy beneath a previously unexplored portion of the Transantarctic Mountains (TAMs) to assess both past and ...
Upper Mantle Seismic Structure beneath Central East Antarctica from Body Wave Tomography: Implications for the Origin of the Gamburtsev Subglacial Mountains

Lloyd, Andrew J.; Nyblade, Andrew A.; Wiens, Douglas A.; Shore, Patrick J.; Hansen, Samantha E.; Kanao, Masaki; Zhao, Dapeng (2013-04-17)
Upper-Mantle Low-Velocity Zone Structure beneath the Kaapvaal Craton from S-Wave Receiver Functions

Hansen, Samantha E.; Nyblade, Andrew A.; Julià, Jordi; Dirks, Paul H. G. M.; Durrheim, Raymond J. (2009)

The southern African Plateau is marked by anomalously high elevations, reaching 1–2 km above sea level, and there is much debate as to whether this topography is compensated by a lower mantle source or by elevated ...
Using S Wave Receiver Functions to Estimate Crustal Structure Beneath Ice Sheets: An Application to the Transantarctic Mountains and East Antarctic Craton

Hansen, Samantha E.; Julià, Jordi; Nyblade, Andrew A.; Pyle, Moira L.; Wiens, Douglas A.; Anandakrishnan, Sridhar (2009)

For seismic stations deployed on ice sheets, determining crustal structure using P wave receiver functions can be difficult since ice reverberations may mask P-to-S (Ps) conversions from the crust-mantle boundary (Moho). ...
Using the National Water Model as a Hypothesis-Testing Tool

Hooper, Richard P.; Nearing, Grey; Condon, Laura S. (2017)

High performance computing has enabled the creation of high-resolution, continental-scale models such as the NOAA’s National Water Model (NWM) which predicts hourly streamflow at 2.7 million locations in the conterminous US ...
Vital Effects in the Context of Biomineralization

Pérez-Huerta, Alberto; Andrus, C. Fred T. (2010)

Vital effects can be defined as biological processes overriding environmental signals, as recorded in geochemical signatures in biominerals. The nature and influence of these vital effects are poorly understood, particularly ...
δ15N Values in Crassostrea Virginica Shells Provides Earliest Direct Evidence for Nitrogen Loading to Chesapeake Bay

Black, H. D.; Andrus, C. Fred T.; Lambert, W. J.; Rick, T. C.; Gillikin, D. P. (2017-03-10)

Crassostrea virginica is one of the most common estuarine bivalves in the United States’ east coast and is frequently found in archaeological sites and sub-fossil deposits. Although there have been several sclerochronological ...

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Browsing Research and Publications - Department of Geological Sciences by Title

Browsing Research and Publications - Department of Geological Sciences by Title

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