 | | Report (volume) | | Geology of the Waterford Quadrangle, Virginia and Maryland, and the Virginia Part of the Point of Rocks Quadrangle...Ridge province and Culpeper basin in northern Virginia and Maryland UNITED STATES GOVERNMENT PRINTING...Geology of the Waterford quadrangle, Virginia and Maryland, and the Virginia part of the Point of Rocks quadrangle...references. Supt. of Docs. no.: I 19.3:2095 l. Geology-Virginia. 2. Geology-Maryland. I. Burton, William C. (William............................................. .. Loudoun Formation .................................... |  | | Report (issue) | | ^ Anne Arundel County 43 Baltimore County 45 Howard County - Montgomery County 88 Prince Georges...Georges County Virginia 74 . 120 129 Arlington County 129 Fairfax County 131 Fauquier County 139...139 Loudoun County 143 Prince William County 149 Diabase quarries of northern Virginia 155 CAPTIONS...forming a ridge north of Route 7 near Dranesville, Virginia. Figure 7. Locations of mineral deposits in...mines in the Soldiers Delight region, Baltimore County, Maryland. Adapted from Pearre and Heyl , 19.60 |  | | Report (issue) | | the cover—Turquois crystals from Lynch Station, Virginia; x ca.; pho tograph by Neal Ycdlin; color plates...C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...of Virginia R. V. DIETRICH* Professor of Geology and Associate Dean of Arts & Sciences, Virginia Polytechnic...Polytechnic Institute Research Division Bulletin 47 Virginia Polytechnic Institute, Blacksburg, Va. 24061 *... © R. V. Dietrich and the Research Division of Virginia Polytechnic Institute, 1970 Printed and bound |  | | Journal (article/letter/editorial) | | 1955 GEOLOGY OF CATOCTIN MOUNTAIN, MARYLAND AND VIRGINIA BY JOHN C. WHITAKER ABSTRACT Detailed mapping...of Catoctin Mountain in Maryland and northern Virginia indicates that the area is not a syncline as previously...revision of the stratigraphy. Strata mapped as Loudoun along the eastern border of Catoctin Mountain constitute...Cambrian-Precambrian boundary. .. 439 Introduction 456 Loudoun formation 441 Map pattern 457 General 441 Structure...Catoctin Mountain, Maryland and Virginia 435 2. Photomicrographs of Loudoun phyllite, Harpers phyllite, Tomstown |  | | Report (issue) | | Water-Quality Data-Collection Sites on Selected Streams in Virginia By Byron J. Prugh, Jr., and Clairiece G. Humphrey...cooperation with the VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY WATER DIVISION Richmond, Virginia 1993 U.S............................................... 7 County .................................................Map showing location of major river basins in Virginia........................................ 3 TABLES................................................ Potomac River Basin to Shenandoah River Basin ........ |  | | Report (volume) | | of the Harpers Ferry Quadrangle, Virginia, Maryland, and West Virginia Prepared in cooperation with the...Survey, the National Park Service, and the 1oudoun County Department of Environmental Resources Cover:...Harpers Ferry. West Virginia, from the Loudoun Heights trail on Blue Ridge in Virginia. Photograph taken...of the Harpers Ferry Quadrangle, Virginia, Maryland, and West Virginia By Scott Southworth and David K...Survey, the National Park Service, and the Loudoun County Department of Environmental Resources Structure |  | | Journal (article/letter/editorial) | | VIRGINIA MINES AND MINERALS By P H I L I P M O R R I L L East D e r r y , N . H . 0 3 0 4 1 (PART INTRODUCTION...mines in Virginia, north of the James River, with the ex ceptions as follows: Albemarle County was very...northern Virginia. Maps used were the U.S.G.S. Topo graphical Sheets. Also used were the county road maps...of H i g h w a y s Richmond, Virginia The price is 2 0 cents per county. Other states could well follow...very high grade iron. Credit should be given the Virginia Department of Mineral Resources in Charlottesville |  | | Report (volume) | | SURVEY CHARLES D. WALCOTT, DIKKCTOR A ETTEER OF VIRGINIA BY HENRY WASHINGTON GOVERNMENT PRINTING 1904...for publication as a bulletin, a gazetteer of Virginia. Very respectful!}7 , HENRY GANNETT, Geographer... A GAZETTEER OF VIRGINIA. By HENKY GANNETT. GENERAL DESCRIPTION OF THE STATE. Virginia is one of tho easternmost...south side of the mouth of Potomac River. It follows the south bank of the Potomac at low-water line up to...eastern course it follows to the Atlantic coast. Virginia was one of the original thirteen States. It adopted |  | | Report (chapter) | | 2018 Seneca sandstone: a heritage stone from the USA CAROL A. GRISSOM1*, EMILY M. ALOIZ2, EDWARD P. VICENZI1...Road., Suitland, MD 20746, USA 2 4047 Argyle Avenue, Erie, PA 16505, USA 3 Material Science and Engineering...University of Maryland, College Park, MD 20742, USA C.A.G., 0000-0003-0924-870X; E.P.V., 0000-0003-2085-6546;...Seneca sandstone quarries are located along the Potomac River 34 km NW of Washington near Poolesville,...president of the Potomac Company founded in 1785 to improve the navigability of the Potomac River, with the |  | | Report (volume) | | .........Prof. George H. Perkins, Burlington. Virginia...........Dr. Thomas L. Watson, Charlottesville...Washington....... Prof. Henry Landes, Seattle. West Virginia... .Dr. I. C. White, Morgantown. Wisconsin......See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities: Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20, Pv. 7 E.; Jefferson |  | 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) | | 472±4 Ma 478±6 Ma Oo* Early Ordovician 483±9 Ma Mine Run Complex Oi O|po O|mIV O|mIII O|gu O|mII... Kps Jdl* Jdo Jmw Qtlp Qts Jd TKb Kpc Potomac Formation Kp Intrusive rocks Stratified and...Qbc Kp Qtlp af upper Paleocene Unconformity Potomac Formation Qts af Kps 58 55 33 Qal Qchow...Allen Crider Jr. (2012–2017) 8 10 KILOMETERS 9 VIRGINIA MAP LOCATION Tc Calvert and (or) Choptank Formations... Zircons from amphibolite on an island in the Potomac River yielded a 207Pb/206Pb crystallization age |  | | Journal (issue) | | feldspar—connotes perfect cleavage.) Northern Virginia Mineral Club members, Please join our February...Towers), 3548 South Jefferson St. (intersecting Leesburg Pike), Falls Church, VA Phone: 703-671-7507 Reservations...rocks are the hosts. Wulfenite from the Ahumada Mine, Sierra de Los Lamentos, Chihuahua, Mexico. Source:...locality of Bleiberg, Austria, though not an active mine site, is still treasured for lovely historic specimens...challenge for resource development, especially solid mine waste management practices. Several species of amphibole |  | | Journal (issue) | | main cations—zinc, lead, and copper. Northern Virginia Mineral Club members, Please join your club officers...Towers), 3548 South Jefferson St. (intersecting Leesburg Pike), Falls Church, VA Phone: 703-671-7507 Reservations...a digression. Sphalerite from Penfield, Monroe County, NY. Photo: Bob Cooke. The Mineral Newsletter ...is known for stunning specimens from the Elmwood Mine and similar localities in Tennessee. These sites...Quarry, now called the Carmel Church Quarry. The Virginia Museum of Natural History is excavating the site |  | | Book (edition) | | mmed at Broken Arrow aud Trout creek, in Sc. Clair county. The strata in this field are more faulted und...prong of Canoe creek, in St. Clair county, to Ha\sop creek, in Bibb county, a distance of 60 miles. Down to...to Helena, in Shelby county, the field has an average width of 5 or 6 miles. Below that point the width...miles being in the latitud" of Blocton, in Bibb county. The south ern end of this field has a greater...Jefferson county; Helena, Montevallo, and Brierfield, Shelby county; and at Blocion. Bibb county. The Warrior |  | | Journal (issue) | | Stones, in attraetive box. Sapphire Amethyst Garnet Hematite Opal Topaz :atoonstone lloss Agate Rock Crystal...that when new at this business of collecti ng, the mine dumps in Penn• sylvania's anthracite region "·ere...found in surface boulders in the moraines. Some Hematite is to be picked up, but the Limonite is the 19...pleasure of bunting around in the glacial debris and mine dumps of this arctic wonderland, where the sun never...northwest fo r our first destination the Herk imer County quar tz locality at )liddleYille about 125 mile: |  | | Journal (issue) | | Richm~ld,Virginia PubJisbed quarterly by the DIVISION O F M t N E W RESOURCES htahttaf RstpwrawBUIMing...as a candidate for such designation. 26 . VIRGINIA DIVISION OF MINERAL RESOURCES be more romantic...Pennsylvania is contained in the Balcony Falls section of Virginia...." It was that and a great deal more. Walcott...Walcott. C. D.. 1892, Notes on the Cambrian rocks of Virginia and the southern Appalachians: American Journal...S. Geological Survey Bulletin 13443 p. NO,4 VIRGINIA MINERALS 27 During the charcoal iron era many |  | | Report (volume) | | ............................................. Virginia......................................................................................... West Virginia.................................................See Bauxite and Halloysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found...commercial quantity or quality. Asphalt. Colbert County, small quantity has been shipped from near Leighton;...following localities : Bibb County, Pratts Ferry; Calhoun County, near Tampa; Clay County, T. 20 S., R. 7 E.; |  | | Journal (article/letter/editorial) | | jasper, agate and iron ores, such as limonite, hematite, turgite, goethite, siderite, and magnetite, and...such as hematite, limonite and siderite, which occurred in bands and poekets in the Potomac formation...filled with water. In the Piedmont Hegion bodies of hematite were formally mined in Maryland at the Springfield...Hill ~iine near Loulsville, and at the Patapsco mine near I!'inksburg. Magnetite was mined at a locality...one-half miles northeast of Whitehill in Baltimore County, Md. Chromium Mines: Formerly large bodies of chormite |  | | Book | | $12.00 ROADSIDE _ JrEOLOoGY of VIRGINIA Keith Frye pueke ajeus Ras “Wy _ Hingsulvey\ 7eauo\spues...NVIHOVIVddV Binqsia1ed ROADSIDE 4 JrEOLOGY of Virginia Keith Frye Illustrated by Ramesh Venkatakrishnan...1935Roadside geology of Virginia. Bibliography: p. Includes index. 1. Geology—Virginia. I. Title. QE173.F78...59806 FOREWORD The great natural beauty of Virginia, from the Atlantic Coast on the east to the Appalachian...and weaker. Great rivers wend their way through Virginia, cutting spectacular gorges through the mountains |  | | Journal (article/letter/editorial) | | State from the PennsylvaniaMaryland line to the Potomac River. Its southeastern edge is the “Fall line...Balti more County, to Sykesville, Carroll County, whence it curves southward to the Potomac River near...the Peach Bottom syncline, is widest in Baltimore County, but to the south, in Howard and Montgomery counties...Balti more County. The studies on which this paper is based were carried on in Carroll County and a part...part of Frederick County, in pursuance of the detailed survey of the Maryland Piedmont begun in 1919 for |  | | Journal (issue) | | on its own. The Mineral Newsletter Northern Virginia Mineral Club members, Please join your club officers...Towers), 3548 South Jefferson St. (intersecting Leesburg Pike), Falls Church, VA Phone: 703-671-7507 Reservations...(next to Westmoreland State Park on the Potomac River in Virginia) for Saturday, March 12. Fossils there...zircon, magnetite, green apatite, and red and brown hematite. by David MacLean Steve Hill was stationed for...Field Trips: Photo Gallery by Mike Kaas Northern Virginia Community College (NOVA) offers a series of 1-day |  | | Report (issue) | | Great Falls of the Potomac River, looking north on the Virginia side. The Potomac falls 80 feet across...Neoproterozoic to Early Cambrian age. Downcutting of the Potomac from the bedrock terrace to the current river channel...field trips 5 and 6. Photograph by Gary Fleming, Virginia Department of Conservation and Recreation. Geology...Sections Geological Society of America Tysons Corner, Virginia March 24-27, 2004 Edited by Scott Southworth and...Groat, Director U.S. Geological Survey, Reston, Virginia: 2004 Free on application to U.S. Geological |  | | Report (volume) | | assachusetts, Connecticut, New jersey, Pennsylvania, Virginia , Maryland , North Carolina, and other Eastern...Massachusetts, Connecticut, New Jersey, Pennsylvania, Virginia, Maryland , North Carolina, and South Carolina...appropriate, the applicable early Mesozoic basin, State, county, or 7 1/2minute USGS topographic quadrangle covered...the State are cited. More than one basin, State, county, or quadrangle may appear for an entry. A State...C.-S.C.) Deep River (N.C.) Durham (N.C.) Davie County (N.C.) Dan River and Danville (N.C.-Va.) Scottsburg |  | | Journal (article/letter/editorial) | | xline—crystalline CALIFORNIA — From near Indian Pass, Imperial County, Calif, we have a deep blue dumortierite that was... This fine 3x5 inch specimen comes from Teller County, Colorado. ARIZONA — "Would you please identify...was found July 2, 1959, near Cave Creek, Maricopa County, Arizona." — sent in by Clyde N. Hall, Elbridge...gray, lustrous flaky masses of hematite. In the light the lustrous hematite appears to be silvery white... Ball Ground is in the northern part of Cherokee County of Northern Georgia. ILLINOIS — An anonymous reader |  | | Report (volume) | | Miscellaneous Products 87 The Detailed Study of County Resources 87 The Special Investigation of Road...Chesapeake Bay near Queenstown VIII. The Falls of the Potomac 114 123 142 146 148 IX. View of the Youghiogheny...Baltimore and Ohio Railroad 152 X. The Gorge of the Potomac, at Harper's Ferry looking east, on the Baltimore...Geology, 1732—1891," Watson's " Bibliography of Virginia," and many lists of works on special subjects...State of Maryland," Phillips' " Cartography of Virginia," " Winsor's Narrative and Critical History, vol |
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