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256 Economic Geology

Oral Session
General Discipline Sessions
Tuesday, 7 October 2008: 1:30 PM-5:30 PM
George R. Brown Convention Center, 320F

Presiding:
Kenneth Johnson and J. Richard Kyle
1:30 PM
Introductory Remarks
1:45 PM
256-1
Geochemistry of Hanging-Wall Metasedimentary Rocks at the Greens Creek Massive Sulfide Deposit, Southeastern Alaska
Craig A. Johnson, US Geological Survey; Cliff D. Taylor, N/A; Joel S. Leventhal, U. S. Geol Survey
2:00 PM
256-2
Synchronous Deposition of Paleoproterozoic Superior-Type Banded Iron-Formations and Volcanogenic Massive Sulfides In the Lake Superior Region: Implications for the Tectonic Evolution of the Penokean Orogen
Klaus J. Schulz, U.S. Geolological Survey; William F. Cannon, U.S. Geological Survey
2:15 PM
256-3
Fractal nature of the distribution of stockworks (feeder zones) and mineralizations of the Iberian Pyrite Belt: Application to mineral exploration
Pablo Gumiel, Instituto Geológico y Minero de España (IGME); Monica Arias, Universidad de Alcalá; David J. Sanderson, University of Southampton; Steve Roberts, National Oceanography Centre, Southampton, University of Southampton
2:30 PM
256-4
Introducing the Effects of Rough Surfaces into Predictive Modeling of Fluid Flow through Fractures
Donald Slottke, The University of Texas at Austin
2:45 PM
256-5
Age of Epithermal Mineralization, Fresnillo District, Zacatecas, Mexico
Jesus M. Velador, New Mexico Tech; Andrew R. Campbell, New Mexico Tech; Matthew Heizler, New Mexico Bureau of Mines & Mineral Resources
3:00 PM
256-6
Geochemistry and fluid evolution of a Carboniferous-hosted sphalerite breccia deposit, Isle of Man
Kevin L. Shelton, Univ of Missouri; Justin M. Beasley, Univ of Missouri; Jay M. Gregg, Oklahoma State University; J.P. Hendry, University of Portsmouth; Ian D. Somerville, University College Dublin
3:15 PM
256-7
Fluid Inclusion and Stable Isotope Studies of Carboniferous Limestone-Hosted Zn-Pb Mineralization In NW Ireland
Christopher J. Persellin, Oklahoma State University; Jay M. Gregg, Oklahoma State University; Kevin L. Shelton, Univ of Missouri; Ian D. Somerville, University College Dublin
3:30 PM
256-8
Os Isotopic Systematics Accompanying the Interaction Between Pelitic Xenoliths and Mafic Magma of the Duluth Complex, Midcontinent Rift System
Curtis D. Williams, Indiana University; Edward M. Ripley, Indiana University; Chusi Li, Indiana University
3:45 PM
256-9
Re-Os Isotopic Study of the Eagle Ni-Cu Sulfide Deposit, Northern Michigan
Xin Ding, Indiana University; Edward M. Ripley, Indiana University; Chusi Li, Indiana University; Steven B. Shirey, Carnegie Institution of Washington
4:00 PM
256-10
Southwest Margin of the Grasberg Igneous Complex, Papua, Indonesia: Prolonged Interaction of Acidic Magmatic Fluid with Carbonate Wall Rock
Adam L. Lambert, University of Texas at Austin; Mark Cloos, University of Texas at Austin
4:15 PM
256-11
Uralitization (Ca-pyroxene to actinolite) and Gold Deposition In the Bullrun Creek District, Northeastern Oregon
Kenneth Johnson, University of Houston-Downtown
4:30 PM
256-12
Mineralogy, Textures and Origin of the Pilot Knob Magnetite Deposit, St. Francois Mountains Proterozoic Terrane, Missouri
John L. Nold, University of Central Missouri; Mark A. Dudley, University of Central Missouri
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