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14c dating groundwater

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The Gnangara Mound and Groundwater System The Gnangara groundwater system covers an area of approximately 2,200 km2 and constitutes the largest utilised source of groundwater in the southwest of Australia (Fig. These aquifers can supply up to 70% of Perth’s potable water when river water is not available (such as during drought periods) and its sustainable use is of major importance for future development in the Perth Basin.

Aquifers are rock structures or sediments located beneath the ground that are saturated and permeable enough to allow economic quantities of groundwater to be extracted.

My work has combined the petrography of stalagmites (the distribution of spelean carbonate minerals, non-carbonate detrital minerals, crystal fabrics, layering, and critical surfaces) with geochemistry (C and O stable isotope analysis and trace-element geochemistry) to understand stalagmites as records of past climate.

Exploration Geologist, Shell Oil, New Orleans, 1983-1985 Ph. Petrography and Geochemistry of Stalagmites as a source of information about past climate change has been the main area of my recent research. Bruce, and Anderson, Thomas F., 1987, Control of Triassic seawater chemistry and temperature on the evolution of post-Paleozoic aragonite-secreting faunas: Geology, v.

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co.

You can also find them listed alphabetically by author on the Website Library page.

Bruce, Anderson, Thomas F., Ackerly, Spafford C., and Cisne, John L., 1989, Paleoceanographic modeling of temperature-salinity profiles from stable isotope data: Paleoceanography, v. A figure from this paper was reproduced in Jochen Hoefs's Stable Isotope Geochemistry.

Bruce, Ackerly, Spafford C., Anderson, Thomas F., and Cisne, John L., 1990, Paleontological and isotope evidence for warm saline deep waters in Ordovician oceans: Nature, v.

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An Alternate Hypothesis for the Image Color by Raymond N.

This work has been supported by NOAA and NSF and was the subject of M. thesis work by Margaret Rafter and Hillary Sletten. More recent collaboration has been with Juan Ramon Vidal-Romani and his colleagues at the University of La Coruna in northwestern Spain and with Fuyuan Liang of Western Illinois University. student James Baldini's thesis focused on relationships between drip rates and speleothem morphologies, and Joe Elkins's Ph. work investigated ways to extract more meaningful carbon isotopic compositions from speleothems. Bruce, 1984, Carbonate diagenetic facies in the Upper Pennsylvanian Dennis Formation in Iowa, Missouri, and Kansas: Journal of Sedimentary Petrology, v.

Much of this work has been done in collaboration with Dr. Brook of the UGA Geography Department, and it has focused on stalagmites from southern Africa, the southwestern United States, China, India, and Belize. student Ny Riavo Gilbertinie Voarintsoa has now joined this effort too.

This area is of prime interest for water resource managers because fresh water is replenishing the otherwise isolated underground system.

The Gnangara groundwater system is the largest utilised source of groundwater in the southwest of Australia and supplies up to 70% of Perth’s potable water during periods of drought.