U.S .GEOLOGICAL SURVEY CIRCULAR 1028 Appalachian Basin Symposium­ Program and Extended Abstracts AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Surv~y, along with prices of the last offerings, are given in the cur­ rent-year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Sur­ vey publications released prior to the current year are listed in the most recent annual "Price and Availability List" Publications that are listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent annual "Price and Availability List" are no longer available. 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E-146, 701 C St. Maps For maps, address mail orders to U.S. Geological Survey, Map Distribution Maps Federal Center, Box 25286 Maps may be purchased over the counter at the U.S. Geologi­ Denver, CO 80225 cal Survey offices where books are sold (all addresses in above list) and at the following Geological Survey offices: Residents of Alaska may order maps from • ROLLA, Missourl--1400 Independence R'd. Alaska Distribution Section, U.S. Geological Survey, • DENVER, Colorado--Map Distribution, Bldg. 810, Federal New Federal Building - Box 12 Center 101 Twelfth Ave., Fairbanks, AK 99701 • FAIRBANKS, Alaska--New Federal Bldg., 101 Twelfth Ave. Appalachian Basin Symposium­ Program and Extended Abstracts Arthur P. Schultz, editor and basin coordinator U.S. Geological Survey Circular 1028 Twenty extended abstracts describing Appalachian thermal history, structure, and stratigraphy in studies that are part of ongoing research funded by the U.S. Geological Survey Evolution of Sedimentary Basins Program DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR., Secretary U.S. GEOLOGICAL SURVEY Dallas L. Peck, Director Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government UNITED STATES GOVERNMENT PRINTING OFFICE: 1989 Free on application to the Books and Open-File Reports Section, U.S. Geological Survey, Federal Center, Box 25425, Denver, CO 80225 library of Congress Cataloging in Publication Data Appalachian Basin Symposium (1988 : Reston, Va.) Appalachian Basin Symposium program and extended abstracts edited by Arthur P. Schultz. p. em. - (U.S. Geological Survey circular ; 1028) Bibliography: p. Supt. of Docs. no.: I 19.4/2:1028 1. Geology-Appalachian Basin-Congresses. 2. Appalachian Basin­ Congresses. I. Schultz, Arthur P. II. Title. Ill. Series. QE78.3.A67 1989 557.5-dc19 89-600079 FOREWORD The abstracts in this circular were presented during a daylong symposium on the geology of the central part of the Appalachian basin held on November 9,1988, in Reston, Va. Participants of the symposium included U.S. Geological Survey geologists from the Office of Energy and Marine Geology and the Office of Regional Geology as well as scientists from local State surveys and universities. The symposium was held during the final stages of a 5-year multidiscipline basin analysis effort and is part of the USGS Evolution of Sedimentary Basins Program. This program focuses the research of a wide variety of disciplines into a combined stratigraphic, structural, and basin evolution synthesis. USGS Bulletin 1839 is a multichaptered series containing the full descriptions of the research presented at the symposium. The first four chap­ ters of this bulletin have been published, and the remaining are in review or final prep­ aration. Approximately 60 geologists attended the symposium. Stratigraphic syntheses included description of rocks ranging from lowermost Cambrian through the Pennsyl­ vanian. Three talks presented differing interpretations of Carboniferous rocks from the same area. Other stratigraphic studies included work on Silurian stratigraphy and the Taconic unconformity, descriptions and interpretations of the syn-orogenic Ordovician Fincastle Conglomerate, and changes in Silurian facies in the Appalachian Valley and Ridge province. Fluid migration and basin thermal history were addressed in two pre­ sentations. The importance of considering fluid migration in thermal modeling was stressed. Basin tectonics and structure were the topics of several talks and posters. Included were discussions on the genesis of the Pennsylvanian salient, lateral ramps in the central and southern Appalachians, dome and basin features associated with thrust­ ing in the southern Appalachians, and gravity slides in the Valley and Ridge province. Completing the program were a presentation of research on Eocene igneous rocks in the central Appalachian Valley and Ridge province and a review of the economic geol­ ogy of the Big Chimney quadrangle, Kanawha County, West Virginia. Foreword Ill PROGRAM Wednesday, November 9, 1988 9:00AM Introductory remarks-Arthur P. Schultz, Appalachian the central Appalachian basin-by Kenneth J. Englund Basin Coordinator and Roger E. Thomas 2:30PM POSTER SESSION: Art Exhibits Hallway 9:10AM Tectonically induced fluid migration in sedimentary basins: Eocene igneous intrusive rocks of the central Appalachian A new factor to be considered in the assessment of Valley and Ridge province-by C. Scott Southworth and thermal history-by Paul P. Hearn, Jr., Harvey E. Bel­ Karen J. Gray kin, and John F. Sutter The geologic framework of the continental shelf and slope of 9:30AM Reevaluation of conodont color alteration patterns in Ordov­ Virginia, with emphasis on petroleum geology-by Ken­ ician rocks, east-central Valley and Ridge and western neth C. Bayer and Robert C. Milici Blue Ridge provinces, Tennessee-by Randall C. Orn­ Petrographic characteristics of the New River Formation of dorff, Anita G. Harris, and Arthur P. Schultz the central Appalachian basin-by Joseph T. O'Connor 9:50AM Stratigraphic framework of Cambrian and Ordovician rocks and Nelson L. Hickling Economic geology of the Big Chimney quadrangle, in the central Appalachian basin-by Robert T. Ryder Kanawha County, West Virginia-by John F. Windolph, 10:10 AM The depositional environment of the Middle Ordovician Jr. Fincastle conglomerate-by Chrysa M. Cullather Stratigraphy, sedimentology, and economic potential of the 10:30 AM COFFEE BREAK Chilhowee Group in the central and southern Appala­ 11:00 AM Regional stratigraphy of Silurian rocks and an enigmatic chians-by K.Y. Lee Ordovician diamictite, southeastern New York-by Jack Provenance and depositional history of the Fincastle Con­ B. Epstein glomerate of southwestern Virginia-by Nelson L. Hick­ 11:20 AM The origin of the Pennsylvania salient and CDP seismic ling and Harvey E. Belkin imaging of the Cornwall-Kelvin displacement along the Anticlines of the Copper Creek-Narrows thrust block, south­ U.S. Atlantic conti~ental margin-by Robert C. Milici western Virginia-by Robert C. McDowell and Kenneth C. Bayer Silurian stratigraphic changes and their effect on the distri­ 11:40 AM Lateral ramps and the structure of the central and southern bution of large bedrock landslides, Appalachian Valley Appalachians, with implication for thrust belts world­ and Ridge province-by Calvin R. Wiggs and Arthur P. wide-by Howard A. Pohn Schultz 12:00 M LUNCH BREAK Central Appalachian Transect: Geology