Session: Celebrating Allan Ludman’s First 56 Field Seasons in Maine II: What Do We Know of Northern Appalachian Geology and What Questions Remain? (Northeastern Section - 57th Annual Meeting

Session No. 14

Sunday, 20 March 2022: 1:30 PM-5:30 PM

Commonwealth Salon 4 (Lancaster Marriott at Penn Square)

T4. Celebrating Allan Ludman’s First 56 Field Seasons in Maine II: What Do We Know of Northern Appalachian Geology and What Questions Remain?

GSA Structural Geology and Tectonics Division; Maine Geological Survey

David West Jr., Henry Berry and Chunzeng Wang, Advocates

Paper #

Start Time

1:30 PM

Welcome to Part II

WEST Jr., David, Department of Geology, Middlebury College, Middlebury, VT 05753

14-1

1:35 PM

ARGON DATING CONSTRAINTS ON THE AGE AND COOLING HISTORY OF PRE-CRETACEOUS BASEMENT ROCKS BENEATH THE MID-ATLANTIC COASTAL PLAIN OF MARYLAND AND VIRGINIA

KUNK, Michael, U.S. Geological Survey, Florence Bascom Science Center, MS 926A National Center, Reston, VA 20192, HORTON Jr., J. Wright, U.S. Geological Survey, Florence Bascom Geoscience Center, 926A National Center, Reston, VA 20192 and MCALEER, Ryan, USGS; U.S. Geological Survey, Florence Bascom Geoscience Center, 926A National Center, Reston, VA 20192

14-2

1:55 PM

TRENDS OF VERY-LOW-GRADE METAMORPHISM IN THE AROOSTOOK-MATAPEDIA BELT OF NORTHEASTERN MAINE (AROOSTOOK COUNTY) USING GRAPTOLITE AND VITRINITE REFLECTANCE

MALINCONICO, MaryAnn, Lafayette College, Easton, PA 18042

14-3

2:15 PM

NEW AIRBORNE GEOPHYSICAL DATA ILLUMINATE ORDOVICIAN VOLCANIC ARC SYSTEMS OF NORTHERN MAINE

DUFF, Patrick¹, SHAH, Anjana¹, WANG, Chunzeng², WHITTAKER, Amber H.³, SLACK, John F.⁴, MARVINNEY, Robert³ and DICKSON, Stephen³, (1)U.S. Geological Survey, Denver Federal Center, Bldg 20, MS 973, Denver, CO 80225, (2)College of Arts and Sciences, University of Maine at Presque Isle, 181 Main Street, Presque Isle, ME 04769, (3)Maine Geological Survey, 93 State House Station, Augusta, ME 04333, (4)Emeritus, U.S. Geological Survey, Reston, VA 20192

14-4

2:35 PM

OLD QUESTIONS, NEW INSIGHTS, AND SOME REFRACTORY PROBLEMS

LUDMAN, Allan, School of Earth and Environmental Sciences, Queens College, City University of New York, 65-30 Kissena Boulevard, Flushing, NY 11367, MCFARLANE, Christopher R.M., Earth Sciences, University of New Brunswick, 2 Bailey Drive, Fredericton, NB E3B 5A3, Canada and WHITTAKER, Amber H., Maine Geological Survey, 93 State House Station, Augusta, ME 04333

2:55 PM

DISCUSSION: Interesting Remaining Questions

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Northeastern Section - 57th Annual Meeting - 2022

T4. Celebrating Allan Ludman’s First 56 Field Seasons in Maine II: What Do We Know of Northern Appalachian Geology and What Questions Remain?