Geological Society of America

8:00 AM

BACKGROUND DETERMINATION AND INSTRUMENTAL PARAMETERS IN ELECTRON MICROPROBE AGE DATING TECHNIQUES

Michael J. Jercinovic, Univ of Massachusetts, Amherst, MA and Michael L. Williams, Morrill Sci Ctr, Amherst, MA

45364 (Technical Sessions)

8:15 AM

OBTAINING MONAZITE MICROPROBE AGES -- A NOVICE’S QUESTIONS AND NEED

Michael G. Bersch, University of Alabama, Tuscaloosa, AL

45561 (Technical Sessions)

8:30 AM

IN SITU EMP AND ID-TIMS COMBINED U-TH-PB DATING OF SINGLE MONAZITES: A NEW METHOD TO UNRAVEL COMPLEX POLYMETAMORPHIC EVOLUTIONS. APPLICATION TO THE UHT GRANULITES OF ANDRIAMENA (NORTH-CENTRAL MADAGASCAR)

Philippe Goncalves, Université Blaise Pascal, Clermont-Ferrand, N/A and Jean-Louis Paquette, Université Blaise Pascal, Clermont-Ferrand, N/A and Christian Nicollet, Université Blaise Pascal, Clermont-Ferrand, N/A and Bertrand Devouard, Université Blaise Pascal, Clermont-Ferrand, N/A

44005 (Technical Sessions)

8:45 AM

ICP-MS/TIMS ANALYSES OF MONAZITES AND XENOTIME FROM MIGMATITES IN THE AAR MASSIF

Sakiko N. Olsen, Johns Hopkins Univ, Baltimore, MD and J.D. Kramers, Universität Bern, Bern, N/A and A. Berger, Universität Bern, Bern, N/A and Kenneth Livi, Johns Hopkins Univ, Baltimore, MD

45197 (Technical Sessions)

9:00 AM

TEXTURE, CHEMISTRY, AND AGE VARIATIONS IN MONAZITE FROM GREENSCHIST TO GRANULITE FACIES, LONGSTAFF BLUFF FORMATION, CENTRAL BAFFIN ISLAND, NUNAVUT, CANADA

Simon Gagné, Dalhousie Univ, Halifax, NS and Rebecca A. Jamieson, Dalhousie Univ, Halifax, NS and Robert M. MacKay, Dalhousie Univ, Halifax, NS and David Corrigan, Geol Survey of Canada, Ottawa, ON

44054 (Technical Sessions)

9:15 AM

MICROPROBE MONAZITE GEOCHRONOLOGY OF FOOTWALL ROCKS BENEATH THE SUDBURY IGNEOUS COMPLEX

Douglas C. Hall, Univ of New Brunswick, Fredericton, NB and Michelle Boast, Department of Geology, Fredericton, NB and John G. Spray, Department of Geology, Fredericton, NB

44664 (Technical Sessions)

9:30 AM

A COMPARISON OF CHIME AND ID-TIMS U-PB MONAZITE AGES FROM THE ROCKY MOUNTAIN TRENCH NEAR GOLDEN, BRITISH COLUMBIA, CANADA AND THE IMPORTANCE OF CHIME ANALYSES

Katherine J.E. Boggs, Univ of Calgary, Calgary, AB and Sandra L. Kamo, Royal Ontario Museum, Toronto, ON and Philip Simony, Univ of Calgary, Calgary, AB and John Moore, Simon Fraser Univ, Burnaby, BC and Douglas Archibald, Queen's Univ, Kingston, ON

45081 (Technical Sessions)

9:45 AM

INSIGHTS INTO THE CHEMICAL AND ISOTOPIC COMPLEXITIES OF METAMORPHIC MONAZITE; INTEGRATION OF IDTIMS AND SHRIMP GEOCHRONOLOGY WITH BSE AND Y-TH-U X-RAY MAPPING TECHNIQUES

H. Daniel Gibson, Carleton Univ, Ottawa, ON and Sharon D. Carr, Carleton Univ, Ottawa, ON and Mike A. Hamilton, Geol Survey of Canada, Ottawa, ON and Richard L. Brown, Carleton Univ, Ottawa, ON

45220 (Technical Sessions)

10:00 AM

CHEMICAL DATING OF MONAZITE IN THE BLACK HILLS, SOUTH DAKOTA, WITH IMPLICATIONS FOR PROTEROZOIC THERMOTECTONISM IN THE EASTERN WYOMING PROVINCE

Peter S. Dahl, Kent State Univ, Kent, OH and M.J. Jercinovic, Univ of Massachusetts, Amherst, MA and Michael L. Williams, Univ of Massachusetts, Amherst, MA

46939 (Technical Sessions)

10:15 AM

ELECTRON MICROPROBE DATING OF MONAZITE: DISSECTION OF A MULTIVARIABLE ANALYTICAL PROTOCOL, WITH APPLICATION TO "TRIPLE-POINT" ROCKS, NORTHERN PICURIS MOUNTAINS, NEW MEXICO

Joseph M. Pyle, Rensselaer Polytechnic Institute, Troy, NY and Christopher G. Daniel, Bucknell Univ, Lewisburg, PA and Frank S. Spear, Rensselaer Polytechnic Institute, Troy, NY

45346 (Technical Sessions)

10:30 AM

TACONIAN AND ACADIAN RIMS ON SOUTHERN ADIRONDACK MONAZITES: HYDROTHERMAL FLUIDS FROM APPALACHIAN METAMORPHISM

Lara C. Storm, Rensselaer Polytechnic Institute, Troy, NY and Frank S. Spear, Rensselaer Polytechnic Institute, Troy, NY

44962 (Technical Sessions)

10:45 AM

SINGLE-CRYSTAL AND WITHIN-GRAIN VARIATION IN U-TH-PB MONAZITE AND 40AR/39AR MUSCOVITE AGES FOR SAMPLES OF THE GASSETTS-TYPE SCHIST, VERMONT APPALACHIANS

W.E. Hames, Auburn Univ, Auburn, AL and R.J. Tracy, Virginia Tech, Blacksburg, VA

46381 (Technical Sessions)

11:00 AM

PROTEROZOIC AND PALEOZOIC THERMAL HISTORY OF THE GRENVILLIAN BLUE RIDGE TERRANE, CENTRAL VIRGINIA, AS PRESERVED BY COMPLEXLY ZONED MONAZITES

Viktoras A. Liogys, Virginia Polytechnic Institute and State Univ, Blacksburg, VA and Robert J. Tracy, Virginia Polytechnic Institute and State Univ, Blacksburg, VA

45576 (Technical Sessions)

11:15 AM

EMPA MONAZITE GEOCHRONOLOGY: INITIAL EXPERIENCE AND RESULTS FROM A TACONIAN AMPHIBOLITE-GRANULITE METAMORPHIC PROGRESSION, WESTERN NORTH CAROLINA BLUE RIDGE

James O. Eckert, Yale Univ, New Haven, CT

42298 (Technical Sessions)

11:30 AM

MONAZITE CHEMICAL AGES REVEAL MORE THAN ONE “GREAT SMOKY GROUP” IN SOUTHERN BLUE RIDGE, APPALACHIAN OROGEN

David P. Moecher, Univ Kentucky, Lexington, KY and Robert J. Tracy, Virginia Tech, Blacksburg, VA and Matthew A. Massey, University Kentucky, Lexington, KY

45381 (Technical Sessions)

11:45 AM

DATING MYLONITE FORMATION USING MICROPROBE MONAZITE DATA: EXAMPLES FROM THE SOUTHERN APPALACHIANS AND NEW ENGLAND, AND A TIMS-MICROPROBE COMPARISON

Robert J. Tracy, Virginia Tech, Blacksburg, VA and John Foudy, Univ of North Carolina, Chapel Hill, NC and Brent V. Miller, Univ of North Carolina, Chapel Hill, NC

46180 (Technical Sessions)

T25 Microprobe Monazite Geochronology: New Developments and Applications

Presentations