GSA Annual Meeting in Phoenix, Arizona, USA - 2019

Session No. 243
Wednesday, 25 September 2019: 8:00 AM-12:00 PM
Room 229B, North Building (Phoenix Convention Center)

T56. New Developments in the Appalachian-Caledonian-Variscan Orogen I

GSA Structural Geology and Tectonics Division

 

Yvette Kuiper, R. Damian Nance, J. Brendan Murphy and Rob Strachan, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
8:05 AM
FROM RIFT TO DRIFT - CONSTRUCTION OF THE MAGMA-RICH IAPETUS MARGIN OF BALTICA
KJØLL, Hans Jørgen, Centre for Earth Evolution and Dynamics (CEED), Postbox 1028 Blindern, Oslo, 0484, Norway, ANDERSEN, Torgeir B., Centre for Earth Evolution and Dynamics (CEED), Department of Geosciences, University of Oslo, POBox 1048 Blindern, Oslo, 0315, Norway, LABROUSSE, Loic, iSTeP, UPMC Paris 6, 4, place Jussieu case 129, Paris, 75005, France and GALLAND, Olivier, Physics of Geological Processes (PGP), The Njord-Centre, University of Oslo, Oslo, NO-0316, Norway
8:20 AM
A NEW LOOK AT THE SCANDINAVIAN CALEDONIDES AND THE SIGNIFICANCE OF HYPER-EXTENSION IN THE PRE-CALEDONIAN PASSIVE MARGIN OF BALTICA (Invited Presentation)
ANDERSEN, Torgeir B.1, JAKOB, Johannes1, KJØLL, Hans Jørgen2 and TEGNER, Christian3, (1)Centre for Earth Evolution and Dynamics (CEED), Department of Geosciences, University of Oslo, POBox 1048 Blindern, Oslo, 0315, Norway, (2)Centre of Earth Evolution and Dynamics (CEED), Department of Gesciences, University of Oslo, POBox 1048 Blindern, 0315 Oslo, Oslo, 0316, Norway, (3)Department of Geoscience, Aarhus University, Hoegh-Guldbergsgade 2, Aarhus, 8000, Denmark
8:40 AM
THE RIFT-INHERITED ARCHITECTURE OF THE SCANDINAVIAN CALEDONIDES AND THE SIGNIFICANCE OF 437 MA MAGMATISM WITHIN THE DISTAL DOMAIN OF THE PRE-CALEDONIAN RIFTED MARGIN OF BALTICA
JAKOB, Johannes and ANDERSEN, Torgeir B., Centre for Earth Evolution and Dynamics (CEED), Department of Geosciences, University of Oslo, POBox 1048 Blindern, Oslo, 0315, Norway
8:55 AM
“OLD FASHIONED” STRATIGRAPHY: THE TEST OF PALEOGEOGRAPHIC RECONSTRUCTIONS OF AVALONIA, “GANDERIA,” AND CADOMIA
LANDING, Ed, New York State Museum, 125 Manning Blvd., 222 Madison Ave., Albany, NY 12203, GEYER, Gerd, Institut für Geographie und Geologie, Universität Würzburg, Am Hubland, Würzburg, 97074, Germany and WESTROP, Stephen R., Oklahoma Museum of Natural History and School of Geology & Geophysics, Univ of Oklahoma, Norman, OK 73072
9:10 AM
NEW U-PB DETRITAL ZIRCON AGES FROM METASEDIMENTARY ROCKS ALONG THE WESTERN-MOST BOUNDARY OF THE INTERPRETED AVALON TERRANE IN THE SOUTHEASTERN NEW ENGLAND APPALACHIANS - A POSSIBLE WEST AFRICAN SOURCE AREA?
SEVERSON, Allison R.1, KUIPER, Yvette D.1, EBY, G. Nelson2 and HEPBURN, J. Christopher3, (1)Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, (2)Environmental, Earth & Atmospheric Sciences, University of Massachusetts, Lowell, MA 01854, (3)Earth and Environmental Sciences, Boston College, Chestnut Hill, MA 02467-3809
9:25 AM
U-PB LASER ABLATION INDUCTIVELY COUPLED MASS SPECTROMETRY (U-PB LA-ICP-MS) ZIRCON AGE CONSTRAINTS ON THE TECTONIC ORIGIN OF THE AVALON TERRANE IN SOUTHEASTERN NEW ENGLAND
ELLISON, Sonia M., Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois St, Golden, CO 80401, KUIPER, Yvette D., Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, CROWLEY, Jim L., Department of Geosciences, Boise State University, Boise, ID 83725 and MURRAY, Daniel P., Department of Geosciences, University of Rhode Island, 337 Woodward Hall, Kingston, RI 02881
9:40 AM
DIACHRONOUS COLLISION AT THE LAURENTIAN MARGIN DURING APPALACHIAN-CALEDONIDE OROGENESIS
WALDRON, John W.F., Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G2E3, Canada, WHITE, Shawna E., Mineral Exploration Research Centre, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON -, Canada and SCHOFIELD, David I., British Geological Survey, The Lyell Centre, Research Avenue South, Edinburgh, EH14 4AP, United Kingdom
 
9:55 AM
Break
10:10 AM
A LOWER CRUSTAL PERSPECTIVE ON THE SCOTTISH AND IRISH CALEDONIDES (Invited Presentation)
DALY, J. Stephen1, BADENSZKI, Eszter1, WHITEHOUSE, Martin J.2, CHEW, David M.3, O'ROURKE, Helen1 and VAN DEN BERG, Riana4, (1)UCD School of Earth Sciences and Irish Centre for Research in Applied Geosciences, University College Dublin, Belfield, Dublin 4, D04 N2E5, Ireland, (2)Department of Geosciences, Swedish Museum of Natural History, Stockholm, SE-104 05, Sweden, (3)Department of Geology and Irish Centre for Research in Applied Geosciences (iCRAG), Trinity College Dublin, Dublin, Dublin 2, Ireland, (4)Barberton Mines (Pan African Resources), Mpumalanga, n/a, South Africa; UCD School of Earth Sciences and Irish Centre for Research in Applied Geosciences, University College Dublin, Belfield, Dublin 4, D04 N2E5, Ireland
10:30 AM
U-PB DETRITAL ZIRCON EVIDENCE FOR ACTIVE MARGIN TECTONISM AFTER THE GRAMPIAN OROGENY IN WESTERN IRELAND
AVERY, Madison1, LUTHER, Amy1, O’SULLIVAN, Paul2 and CLIFT, Peter D.1, (1)Geology and Geophysics, Louisiana State University, Baton Rouge, LA 70803, (2)GeoSep Services, 1521 Pine Cone Rd, Moscow, ID 83843
10:45 AM
RAPID RATES OF OROGENIC COLLAPSE IN THE SCOTTISH CALEDONIDES
SPENCER, Brandon M.1, THIGPEN, J. Ryan1, MCDONALD, C.S.2, HODGES, K.V.2, MAKO, Calvin A.3, LAW, R.D.3 and ASHLEY, Kyle T.4, (1)Department of Earth and Environmental Sciences, University of Kentucky, Lexington, KY 40506, (2)School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, (3)Department of Geosciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, (4)Department of Geology and Environmental Science, University of Pittsburgh, 4107 O'Hara St., Pittsburgh, PA 15260
11:00 AM
THE LASER’S EDGE: PUSHING DETRITAL ZIRCON GEOCHRONOLOGY TO THE LIMIT TO STUDY COMPLEX ROCKS IN THE PELHAM DOME, NORTHERN APPALACHIANS
CROWLEY, James L., Geosciences, Boise State University, Boise, ID 83725-1535, KARABINOS, Paul M., Geosciences, Williams College, Williamstown, MA 01267 and MACDONALD, Francis A., Earth Science, University of California, Santa Barbara, CA 93106-9630
11:15 AM
DO TOPOGRAPHIC BARRIERS PREVENT HINTERLAND DETRITUS FROM REACHING FORELAND BASINS? TWO EXAMPLES FROM THE TACONIC AND ACADIAN OROGENIES IN THE NORTHERN APPALACHIANS
KARABINOS, Paul, Dept. Geosciences, Williams College, Williamstown, MA 01267, CROWLEY, James L., Department of Geosciences, Boise State University, Boise, ID 83725 and MACDONALD, Francis A., Department of Earth Science, University of California, 1006 Webb Hall, Santa Barbara, CA 93106-9630
11:30 AM
GEOCHRONOLOGIC EVIDENCE FOR SALINIC THRUSTING AND ACADIAN REACTIVATION OF EXTERNAL BASEMENT MASSIFS IN WESTERN NEW ENGLAND AND OVERPRINTING OF THE ORDOVICIAN TACONIC THRUST BELT
WEBB, Laura E., Geology, University of Vermont, 180 Colchester Ave., Burlington, VT 05405, KARABINOS, Paul, Dept. Geosciences, Williams College, Williamstown, MA 01267 and KLEPEIS, Keith A., Department of Geology, University of Vermont, Burlington, VT 05405
11:45 AM
AGE AND FORMATION OF ANORTHOSITIC ROCKS WITHIN THE BLAIR RIVER INLIER OF NORTHERN CAPE BRETON ISLAND, NOVA SCOTIA (CANADA)
SHELLNUTT, J. Gregory, Department of Earth Sciences, National Taiwan Normal University, 88 Tingzhou Road Section 4, Taipei, 11677, Taiwan, DOSTAL, Jaroslav, Department of Geology, St. Mary's University, Halilfax, NS B3H 3C3, Canada, KEPPIE, J. Duncan, Departamento de Geología Regional, Instituto de Geología, Universidad Nacional Autónoma de México, México, DF 04510, Mexico and KEPPIE, D. Fraser, Nova Scotia Department of Energy, 1690 Hollis Street, Halifax, NS B3j3j9, Canada
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