 | | Journal (article/letter/editorial) | | PLS. APRIL 1955 GEOLOGY OF CATOCTIN MOUNTAIN, MARYLAND AND VIRGINIA BY JOHN C. WHITAKER ABSTRACT Detailed...underlying metavolcanics of Catoctin Mountain in Maryland and northern Virginia indicates that the area...Mountain constitute a zone including the upper Weverton quartzite and the basal Harpers phyllite. Evidence...fault 458 Conglomerate member 442 Petrofabrics 458 Weverton quartzite 442 Introduction 458 General 442 Mica...Mica orientation 460 Banded quartzite 443 Quartz orientation 460 Thin-bedded quartzite 443 Conclusions |  | | Report (volume) | | Quadrangle, Virginia, Maryland, and West Virginia Prepared in cooperation with the Maryland Geological Survey...Survey, the National Park Service, and the 1oudoun County Department of Environmental Resources Cover:...West Virginia, from the Loudoun Heights trail on Blue Ridge in Virginia. Photograph taken March 1989 by... Geology of the Harpers Ferry Quadrangle, Virginia, Maryland, and West Virginia By Scott Southworth and David...cooperation with the Maryland Geological Survey, the National Park Service, and the Loudoun County Department of |  | | Report (volume) | | Geology of the Waterford Quadrangle, Virginia and Maryland, and the Virginia Part of the Point of Rocks Quadrangle...of part of the Blue Ridge province and Culpeper basin in northern Virginia and Maryland UNITED STATES...STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1995 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary...Geology of the Waterford quadrangle, Virginia and Maryland, and the Virginia part of the Point of Rocks quadrangle...: I 19.3:2095 l. Geology-Virginia. 2. Geology-Maryland. I. Burton, William C. (William Chapin), 1952 |  | | Journal (article/letter/editorial) | | Piedmont of northern Virginia east of the Catoctin-Blue Ridge anti clinorium ............................the Everona limestone ............ 843 Catoctin-Blue Ridge anticlinorium ..............................Piedmont and Bine Bidge provinces. At Potomac Biver the Blue Bidge Province extends from Catoctin Mountain west...Harpers Perry and is coextensive with the Catoctin-Blue Bidge anticlinorium, which is continuous from near...near Dillsburg, Pennsylvania, across Maryland, Vir ginia, the Carolinas, and Georgia. The eastern boundary |  | | Report (issue) | | GEOLOGICAL SURVEY Geologic map of the Loudoun County portion of the Middleburg quadrangle, Virginia...accompanies J~~" Prepared in cooperation with Loudoun County Department of Natural Resources This report is...endorsement by the U.S. Government or the Loudoun County Department of Natural Resources. George Mason University...Mountains and consists of subrounded quartzite, vein quartz, greenstone and phyllite. Streams draining the...abundant pebbles and cobbles of epidosite, vein quartz and lesser amounts of metabasalt and quartzite |  | | Report (issue) | | such meeting and the third to be held in or near Washington, D.C. This guidebook and the field trips presented...transect from the Coastal Plain province to the Blue Ridge province, whereas the other field trips each...Ridge province in West Virginia, Pennsylvania, and Maryland (Trip 3); Eocene volcanic rocks that intrude Paleozoic...Mesoproterozoic gneisses and granitoids located in the Blue Ridge province within and near Shenandoah National...metamorphic rocks of the eastern Piedmont province in Maryland and Virginia (Trip 5); the use of cosmogenic isotopes |  | | Report (issue) | | REPRINT OF GEOLOGY AND MINERAL RESOURCES OF ALBEMARLE COUNTY Wilbur A. Nelson BULLETIN 77 Adobe Acrobat® Reader®...rendering of Geology and Mineral Resources of Albemarle County by Wilbur Nelson is to make accessible an out of...RESOURCES GEOLOGY AND MINERAL RESOURCES OF ALBEMARLE COUNTY Wilbur A. Nelson BULLETIN 77 VIRGINIA DIVISION...Geology, to popularize the geology of Albernarle County. I t is written in a non-technical manner for the...the people of Virginia and Albemarle County. Professor Nelson is well acquainted with the entire geologic |  | Lyttle, Peter T., Aleinikoff, John N., Burton, William C., Crider, E. Allen, Drake, Avery A., Froelich, Albert J., Horton, J. Wright, Kasselas, Gregorios, Mixon, Robert B., McCartan, Lucy, Nelson, Arthur E., Newell, Wayne L., Pavlides, Louis, Powars, David S., Southworth, C. Scott, Weems, Robert E. (2017) Geologic map of the Washington West 30’ × 60’ quadrangle, Maryland, Virginia, and Washington D.C. Open-File Report 2017-1142. US Geological Survey doi:10.3133/ofr20171142 | Report (issue) | | Qts Odm* Tn Tc Ty Kp Qsp Qal Qsh Qts Ogh* BLUE RIDGE PROVINCE Qtlp Qal Qtlp Tm Qbc Qts Qts...Choptank Formations (middle and lower Miocene)— Quartz sand, grayish-olive to dark-greenish-olive, very...a maximum elevation of about 55 m (180 ft) in Maryland and 117 m (384 ft) in the District of Columbia...yellowish-brown meta-arkose, containing lenses and clasts of quartz and dark-gray mudstone. Rare thin layers of purple...the Catoctin Formation Ypb Ym Quartzite and quartz-sericite tectonite (Neoproterozoic)—Light-gray |  | | Journal (article/letter/editorial) | | allochthonous platform car bonate rocks beneath the Blue Ridge was adopted in detail, while a modified version...(1989) for part of the Great Valley and the western Blue Ridge. The geologic map by Glover 715 et al. (1989)...portion of the transect in Virginia, from the eastern Blue Ridge to the Coastal Plain. Cratonic Interior to...deposition of a thin blanket (commonly <100 m) of quartz arenite across the basin (Whisonant, 1977; Cotter...marine transgression that led to the deposition of a quartz arenite. After the marine transgression at the |  | | Report (issue) | | GEOLOGIC RADON POTENTIAL OF EPA REGION 3 Delaware Maryland Pennsylvania Virginia West Virginia OPEN-FILE...GEOLOGIC RADON POTENTIAL OF EPA REGION 3 Delaware, Maryland, Pennsylvania, Virginia, and West Virginia R...Preliminary Geologic Radon Potential Assessment of Maryland Linda C.S. Gundersen 73 5. Preliminary Geologic...aerial radioactivity, and indoor radon data by county. Because of constraints on the scales of maps presented...(2) barometric pressure; and (3) temperature. Washington and Rose (1990) suggest that temperature-controlled |  | | Report (issue) | | geology of the Piedmont and Blue Ridge provinces__ Martic thrust block Catoctin-Blue Ridge anticlinorium Origin...uscovite schist from west of phenix, Charlotte County; B, Biotite-muscovite schist from northwest of...from Crane Creek; south of Hixburg, Appomattox County; B, Columbia granite near Cub Creek, east of Red...Kyanite quartzite from Baker Mountain, prince Edward County*__ I Massive kyanite in kyanite-bearing pegmatite...kyanite-bearing rock on Ridge Mountain, Buckingham County; B, Melrose granite, east of McKeever ferry, on |  | | Report (issue) | | Divisions and Differential Uplift in the Piedmont and Blue Ridge G£b :LOG-! A-L SURVEY P R O FC S SI ON A L...Divisions and Differential Uplift in the Piedmont and Blue Ridge ByJOHNT. HACK GEOLOGICAL SURVEY PROFESSIONAL...topography and other surface features of the Piedmont and Blue Ridge, as related to late tectonic history UNITED...UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1982 UNITED STATES DEPARTMENT OF THE INTERIOR JAMES...divisions and differential uplift in the Piedmont and Blue Ridge. (Geological Survey professional paper ; 1265) |  | | Report (issue) | | BULLETIN C 67 GEOLOGY AND MINERAL RESOURCES OF YORK COUNTY PENNSYLVANIA By GEORGE W. STOSE of the U. S. Geo1ogical...phyllite in limestone lo·w land; B, Slickensidecl quartz pebble on fault plane .. . .. . . .. . .. . . ...)fartinsburg shale to older formation in northern York County . . . . . . . . . . . . 8 l 5. Geologic map of...in South Mountain in York County a nd adjacent parts of Cumberland County 139 9. Sketch 1nap showing...overthrust and Stoner block in York J 3. l ·L County • .............. . .......................... |  | | Journal (article/letter/editorial) | | HY PERSTHENE SY ENITE AND RELATED ROCKS OF THE BLUE RIDGE REGION, V IR G IN IA 1 BY THOMAS L. WATSON................................................. Quartz-bearing hypersthene-andesine syenite........................................... Comparison with quartz monzonite........................................Comparison with syenite (andesine anorthosite) of Nelson County, Virginia........................................BL U E RIDGE REGION I n t r o d u c t io n The Blue Ridge, which forms the extreme eastern member of |  | Aleinikoff, John N, Burton, William C, Lyttle, Peter T, Nelson, Arthur E, Southworth, C.Scott (2000) U–Pb geochronology of zircon and monazite from Mesoproterozoic granitic gneisses of the northern Blue Ridge, Virginia and Maryland, USA. Precambrian Research, 99 (1) 113-146 doi:10.1016/s0301-9268(99)00056-x | Journal (article/letter/editorial) | | granitic gneisses of the northern Blue Ridge, Virginia and Maryland, USA John N. Aleinikoff a, *, William...963, Denver, CO 80225, USA b US Geological Survey, MS 926A, Reston, VA 22092, USA c US Geological Survey...Survey, MS 908, Reston, VA 22092, USA Received 29 March 1999; accepted 23 July 1999 Abstract Mesoproterozoic...basement of the northern Blue Ridge geologic province in Virginia and Maryland. Lithology, structure, and...groups: (1) garnetiferous metagranite (1077±4 Ma) and quartz-plagioclase gneiss (1077±4 Ma); (2) white leucocratic |  | | Report (volume) | | of Stony Man (alt. 4,010 ft.) on the crest of the Blue Ridge and the Little Stony Man Cliffs (left) are...sections of the Blue Ridge near Luray, Va ____________ In pocket FIGURES 1. View of the Blue Ridge from the...Generalized geologic map of the Catoctin Mountain-Blue Ridge anticlinorium in Virginia___________________...Reed, Jr. Abstract In the Blue Ridge Provmce of northern VIrgmm, Maryland, and southern Pennsylvama,...structures are well preserved 1 Introduction The Blue Ridge IS the southeasternmost of the great senes |  | | Report (issue) | | Sequatchie in the Chickamauga Limestone in Walker County, Georgia. In northwestern Georgia Butts and Gildersleeve...Formation in the Chickamauga Limestone in Dade County, Georgia. There, Croft (p. 8) divided the Chickamauga... 95) for exposures near Newala Station, Shelby County, Alabama. In its type area Butts described the... pure, blue limestone. . . . The formation is massive, thick, or moderately thickbedded. Blue-gray, finely...recognized "red or red-mottled limestone interbedded with blue or dove beds" in eastern belts but included these |  | | Book | | from Hyner View, Hyner Run Slate Park, Clinton County, showing accordant ridges in the Appalachian Plateaus...of the Ridge and Valley province in Huntingdon County. Flooded meanders of Raystown Lake on the Raystown... PART V. PHYSIOGRAPHY Chapter 28. Southeast of Blue Mountain Noel Potter, Jr. Chapter 29. Appalachian...XXI Pulpit rocks on Warrior Ridge in Huntingdon County, co1nposed of the Lower Devonian Ridgeley Sandstone...description of the falls of the Youghiogheny in Fayette County. Johann David Schopf, a naturalist trained in Germany |  | | Report (issue) | | pnblicatioa write to the Geological Survey in Washington for official mailing label to use in returning...of recumbent fold in albite-chlorite-muscovite-quartz schist, 7 miles northwest of Tucquan anticline;...anticline; B, Fold in albite-chlorite-muscovite-quartz schist; C, Muscovite-chlorite-quartzs chist, from Muddy...Chloritoid-muscovite-quartz schist, from Saubel Hill; B, Chloritoid-muscovite-quartz schist, from Hoffacker...Hoffacker Valley; C, Banded chlorite-muscovite-quartz schist, half a mile south of Freysville________________________ |  | | Book | | Pennsylvania___ _ _ _ 1 _ 2 _ 2 1 CHAPTER 4 Maryland ... 3 CHAPTER 5 Virginia 4 1 CHAPTER 6 West...n g y e l l o w " c o l o r " i n y o u r pan. Maryland: M o n t g o m e r y, Frederick, H o w a r d ...eastern streams and rivers f o r epidote, unakite, blue quartz, agate, chalcedony, petrified wood and other...n d a n assortment o f fossils. Photograph b y Maryland Board o f Natural Resources. 2 K e n t u c k...found are worth it. Here collectors from the Washington D.C. area visit Virginia's noted Rutherford Mine |  | | Report (issue) | | GEOLOGY OF THE NAZARETH QUADRANGLE, NORTHAMPTON COUNTY; PENNSYLVANIA By John M. x^ Aaron Open-file...west. The area is entirely within Northampton County in eastern Pennsylvania between the cities of...(Lesley and others, 1883) divided Northampton County, including the area of this report, into three...Franklin Limestone in Piedmont rocks in Chester County, Pennsylvania. Bayley (1914, 1941) applied the...sphene, apatite, magnetite, biotite, and 23 quartz. Plagioclase typically constitutes between 35 |  | | Book | | UNIVERSITY MARYLAND F, J. PETTIJOHN JOHNS HOPKINS BALTIMORE, UNIVERSITY MARYLAND J. C., REED...COLORADO and KENNETH MARYLAND BALTIMORE, N. WEAVER GEOLOGICAL SURVEY MARYLAND INTERSCIENCE PUBLISHERS...Branch of Organic Fuels, U. S. Geological Survey, Washington, D. C. 20242. BROWN, WittiaM R., Department of...Geological Survey, Washington, ‘D. C. 20242. OWENS, James P., 14528 Bauer Drive, Rockville, Maryland 20853. PETTIJOHN...Department of Geology, Johns Hopkins University, Maryland 21218. Doucias Baltimore, W., Eastern States |  | | Book | | FORMATION (After Bowman, 1966b) Light Minerals Quartz Chert Feldspar, potash Feldspar, plagioclase Glauconite...Rutile Anatase Tremolite Actinolite Hornblende, blue green brown basaltic Andalusite Kyanite Sillimanite...middle Miocene Calvert Formation of Virginia and Maryland and indicated that the fauna was of a middle-neritic...— 10 10 10 10 10 — 10 5 5 Illite Kaolinite Quartz 35 30 45 40 30 40 30 30 25 30 30 30 20 10 10 ...FORMATIONS Montmorillonite Mixed Layer Illite Kaolinite Quartz Feldspar Gibbsite Lepidocrocite Goethite 17 5 |  | | Book (volume) | | interior region The ·valley and Ridge Province The Blue Ridge Province 5.1. General geologic features 5...Shield and its appendages in the north, and in the Blue Ridge Province farther south. They are partly Precambrian...RTHUR KEITH, ,1/ho mapped 1nany quadrangles from Maryland to Georgia bet,veen 1889 and 1912, and reviewed...his associates of the Carnegie Institution of Washington (TILTON and others, 1958, 1960). Available radiometric...demonstrates the existence of Precambrian rocks in the Blue Ridge Province but yields·wholly younger ages in |  | | Report (volume) | | Zone UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1966 UNITED STATES DEPARTMENT OF THE INTERIOR...of Documents, U.S. Government Printing Office Washington, D.C, 20402 - Price $13 (paper cover) per set...Genevieve Limestone Ste. Genevieve Limestone (in Blue River Group) Ste. Genveieve Limestone (in Meramec...formation has been called "Ste. Genevieve Limestone in Blue River Group" in another area. Finally, the name...Bull. 1060-D, p. 193, 252-253, pl. 7. In Nemaha County, Kans., member is basal unit of Howard limestone |
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