ML070720645

Map 59, Glacial Deposits of Pennsylvania.

ML070720645
Person / Time
Site:	Susquehanna
Issue date:	12/31/2000
From:	State of PA, Dept of Conservation and Natural Resources
To:	Office of Nuclear Reactor Regulation
ALICIA MULLINS 301-415-1224
References
Download: ML070720645 (1)

Text

MAP 59 GLACIAL DEPOSITS OF PENNSYLVANIA COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF CONSERVATION AND NATURAL RESOURCES SCALE BUREAU OF TOPOGRAPHIC AND GEOLOGIC SURVEY www.dcnr.state.pa.us/topogeo 80° 0 10 20 30 40 50 MI IE 0 20 40 60 80 KM ER K E LA 79° 78° 77° 76° 42° N. Y. N. Y. 42° ERIE BRADFORD SUSQUEHANNA WAYNE DE LA WA RE WARREN McKEAN CRAWFORD TIOGA 75° POTTER FOREST ELK CAMERON SULLIVAN N.

WYOMING LACKAWANNA PIKE Y.

CLINTON VENANGO LYCOMING LUZERNE N.

CLARION JEFFERSON J.

MERCER MONROE CLEARFIELD LAWRENCE CENTRE MO NT 41° 41° OU R

UNION COLUMBIA 75° CARBON BUTLER OHIO D

ARMSTRONG AN NORTHAMPTON RL MIFFLIN SNYDER BE UM CAMBRIA R TH NO SCHUYLKILL ALLEGHENY HUNTINGDON JUNIATA W. VA.

BEAVER INDIANA LEHIGH BUCKS DAUPHIN 75° PERRY BERKS WESTMORELAND BLAIR R LEBANON IV E

R MONTGOMERY BEDFORD CUMBERLAND IA WASHINGTON YORK PH FULTON LANCASTER EL 40° FAYETTE AD 40° ADAMS IL GREENE SOMERSET FRANKLIN PH CHESTER 75° DELAWAR E DEL. N. J.

80° W. VA. MD. MD.

79° 78° 77° 76° SYMBOLS EXPLANATION RECENT TO LATE ILLINOIAN WISCONSINAN LATE ILLINOIAN PRE-ILLINOIAN (0-198,000 yrs.) (17,000-22,000 yrs.) (132,000-198,000 yrs.) (>770,000 yrs.) Southern limit of gla-cial advance STRATIFIED DRIFT ASHTABULA TILL Thick, gray, clayey to OLEAN TILL TITUSVILLE TILL MAPLEDALE TILL Sand and gravel in eskers, kames, silty to sandy till cover- Moderately thick, gray to gray-HIRAM TILL ing over 75 percent of UNNAMED TILLS UNNAMED TILLS Approximate limit of kame terraces, and outwash, princi- ish-red, sandy till covering 25 pally in valleys; silt and clay in lake the ground; topography to 50 percent of the ground; Thin, gray (Titusville) to brown and grayish- Thin, gray, clayey to silty till in patches Illinoian advance deposits in formerly ice-dammed is mainly gently undu- very thin till covers an addi- red (unnamed), clayey to sandy till cover- covering up to 10 percent of the ground; LAVERY TILL lating, but there is also valleys; lake clays and beach sands tional 25 percent of the ground; ing 10 to 25 percent of the ground; topog- topography reflects the underlying bed-and gravels along Lake Erie; thin some knob-and-kettle topography reflects the under- raphy reflects the underlying bedrock; rock; thick, well-developed soil, commonly Approximate limit of (Recent) to thick (late Illinoian) soils. KENT TILL topography; thin soil. lying bedrock; thin soil. moderately thick, well-developed soil. having a yellowish-red color. pre-Illinoian advance By W. D. Sevon and D. D. Braun. 2200-MP-DCNR3027 Second Edition, 1997; Second Printing, 2000. Printed on Recycled Paper