 | | Journal (article/letter/editorial) | | R. V. DIETRICH Virginia Polytechnic Institute, Blac^sburg, Virginia P. D. FULLAGAR University of North...Maryland M. L. BOTTINO Ajax Company, Inc., Norfoll^, Virginia K/Ar and Rb/Sr Dating of Tectonic Events in the...the Appalachians of Southwestern Virginia Abstract: To investigate the effect of faulting on isotopic...sedimentary bedrock area near Blacksburg in Southwestern Virginia. Included are "Older Precambrian" gneiss(es);...isotopic "ages" found are 687 + 15 m.y. (K/Ar, biotite) and 1320 ± 100 m.y. (Rb/Sr, wholerock isochron) |  | | Journal (issue) | | mineral as specimens in Arkansas. Dug Hill in Garland County was the source of most early wavellite specimens...Hot Spring County or from Montgomery County. Dug Hill was in fact part of Hot Spring County until December...& Mottra01ite fro01 a New Locality: Louisa County, Virginia Lance E. Kearns Dept. of Geology & Environmental...University, Harrisonburg, Virginia, 22807 Michael D. Dunn 1001 Mica Rd Mineral, Virginia, 23117 Specimens recently...located in Louisa County (Figure I on page 3) 5½ miles north east of Mineral, Virginia and just southeast |  | | 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;...Formation found in the states of Maryland and Virginia; this Formation is in turn a part of the Newark...from Nova Scotia in Canada to South Carolina in the USA (Olsen 1980; Lee & Froelich 1989; see Fig. 1). Other |  | | Journal (issue) | | Mulholland Highway, extreme western Los Angeles County, California. CubicGarnets Foundin Marylandand...mineral concentrates of Rock Run, a small Montgomery County, Maryland stream about 5.5 miles (9 km) long...spessartine cubic crystal from Rock Run, Montgomery County, Maryland, photo by the author. 2 Mineral...sands of not only Rock Run, but most of the other county streams. For nearly the next two years, I continued...News, P.O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-664-2448 E-mail: lream@comtch.iea.com |  | | Report (issue) | | Beltsville, Laurel, and Washington East Quadrangles, Montgomery, Prince Georges, Howard, and Anne Arundel Counties...BELTSVILLE, LAUREL, AND WASHINGTON EAST QUADRANGLES, MONTGOMERY, PRINCE GEORGES, HOWARD, AND ANNE ARUNDEL COUNTIES...This part of the Maryland Piedmont is largely in Montgomery and Prince Georges Counties. Smaller areas are...square miles. Loch Raven Thrust Sheet In Howard County, rocks of the Loch Raven thrust sheet were mapped...of abundant quartz and plagioclase and lesser biotite and muscovite. The rock has the composition of |  | | 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 (issue) | | NOVEMBER 1992 VOL. 38 INTERESTING USES OF STONE IN VIRGINIA - PART I Harry W. Webb' and Palmer C. Sweet e...and soapstone have been or are being quarried in Virginia. Some 350 interesting uses of dimension stone...rock types quarried for dimension stone uses in Virginia include amphibolite schist, conglomerate, diabase...soapstone. The quarrying of most dimension stone in Virginia is uneconomical today because of the relatively...and uses of various types of dimension stone in Virginia. Architectural terms are defied in the Appendix |  | | Book | | National Center Reston, Virginia 22092 573-308-3500 703-648-6045 or phone 800-USA-MAPS Map 3. Arkansas’.... Location 1 Montgomery County quartz deposits................. Other Montgomery County quartz mines...area................................ 2 Garland County quartz deposits......................... Miller...Saline County quartz deposits............................. 3 Jeffrey Sandstone Quarry, Pulaski County......Pulaski County..................... 5 Dug Hill wavellite, Garland County................... 6 County Pit |  | | 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) | | ___. Micrograph of sillimanite replacement of biotite in schist_________________________-_____---_--_-_--____...rocks of Montgomery County, Md. Bennison and Milton (1954) mapped adjacent parts of Fairfax County, Va. ...metamorphic grade continues into northwestern Montgomery County, where Cloos' mapping (Cloos and Cooke, 1953)...lineation is conspicuous throughout eastern Montgomery County, where 'Cloos (Cloos and Cooke, 1953) mapped...and Cooke, 1953) comprise a variety of muscovite-biotite, muscovitechlorite, and sericite-chlorite schists |  | | 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 |  | | Report (issue) | | Uranium occurrences in non-sedimentary rocks of Virginia ........... 96 Table 18 Selected references arranged...occurrences in non-sedimentary rocks of southwestern Virginia.........................98 Figure 23. Uranium...occurrences in non-sedimentary rocks of north-central Virginia........................99 INTRODUCTION Uranium...deposit occurs as a thin seam in graphitic Cleburne County. The property is, about 11.2 SINE phyllite which...Location No. Source of information Fairfield County. Short distance northeast of East Village, on a |  | | Report (issue) | | 4, A1 2 O 3 26.8, Na 2 O 16.3, Lenni, Delaware County. Crystals. Eyerman, 1911, 11. Composition: Analysis:...Sp.gr LOCALITIES: Berks County: Birdsboro, and Gickerville; Delaware County: Leiperville, Lenni (druses...Felton's farm (Chester), and Ward's quarry; Montgomery County: Sumneytown, and Perkiomenville ; Philadelphia:...cut east of Reading (probably Birdsboro), Berks County. White, Smith, 1910, 540. silky mass of radiating...42 9.86 4.77 13.60 100.69 2.277 LOCALITY: Berks County: Birdsboro. MESOLITE m Na Al Si3Oio.2H O 2 2 |  | | Report (issue) | | largely in Howard County, Maryland. The northeasternmost part is in Baltimore County, Maryland and about...about 0.03 square miles is in Anne Arundel County. Most of the area is suburban and almost all outcrops...1991-1997) it consists mostly of quartz, muscovite, and biotite and much lesser plagioclase. Chemically, it is...has a fair to good schistosity marked by aligned biotite flakes. The interbedded schist and semipelitic...consists of the Baltimore Complex. In Baltimore County, the Baltimore Complex consists of the Mount Washington |  | | Report (issue) | | aeroradioactivity and geology of an area in Howard County, ~d---------------------------5. ~ap showing aeroradioactivity...aeroradioactivity and geology of an area in Montgomery County, Md________________________ 6. Profiles showing...Carolina and Georgia__________________ 9. Part of Hart County, Ga-------------------------------------------...Georges County, Md---------------------------------------------------------14. Area in Parker County, Te...speed of 145 miles per hour. Topographic maps, county road maps, and aerial photographs are used for |  | | Journal (article/letter/editorial) | | H . L . : Phosphate Minerals in the Vesuvius, Virginia, Area and Notes on the Type Locality of Rockbridgeite...Jersey, 195 Bideauxite, 12 Bideaux, R. A . , 12 Biotite, Colorado, 244 Bitumen, Illinois, 69 Bixbyite,...Butler, G . M . , 12 Butlerite, 12 Cacoxenite, Virginia, 22 Cahnite, New Jersey, 213 Calcite: Illinois...Denver Museum of Natural History, 58; Clear Creek County, 241 Coming Events: 38, 81, 177, 227, 273 Connecticut...148 Dick, A . B . , 257 Dickite, 257 Dixie mine, Virginia, 21 Downeyite, 73 Downey, W. F . , 73 Dugganite |  | | Report (issue) | | descriptions Alamance County Copper prospect Foust copper mine Robeson gold prospect Cabarrus County Allman prospect...Snydermine Troutmanmine Tucker mine Whitney mine Chatham County Bear Creek copper mine Cassana Kid mine Gilmore-Hart...H. Purvis prospect . Sloan copper mine Davidson County The Cid mining district Cidmine Conrad Hill-Dodge...Silver Valley mine .?:. Franklin County / Portis mine Granville County . The Virgilina district Blue Wing...prospect Holloway mine Pannebaker mine Guilford County Beard mine Deep River gold mine Fentress mine Fisher |  | | Journal (article/letter/editorial) | | Service. Figure 4 (below). Map showing Potomac, Montgomery County, Maryland, nearby the Maryland mine site;...prepared by William Besse. The Maryland mine in Montgomery County, Maryland, was intermittently mined for gold...the Gem, Lapidary, and Mineral Society of Montgomery County, Maryland, and the Baltimore Mineral Society...mines clustered in the southern section of Montgomery County, Maryland, near the town of Potomac (formerly...properties were left in the care of local Montgomery County, Maryland, attorney Albert M. Bouic (Penington |  | | 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.; |  | | Report (issue) | | Recognized Sedimentary Melange in the Northern Virginia Piedmont U.S. GEOLOGICAL SU&V.&T PROFESSIONAL...Recognized Sedimentary Melange in the Northern Virginia Piedmont By Avery Ala Drake, Jr. U.S. GEOLOGICAL...recognized sedimentary melange in the northern Virginia Piedmont. (Geological Survey professional paper...16:1324 1. Melanges (Petrology). 2. Petrology Virginia. I. Title. II. Series. QE471.15.M44D73 1984 552...Greneralized geologic map of part of Fairfax County, Virginia, and geologic map and section of the type |  | | Report (issue) | | along the borders of a granite body in Halifax 18 County. 19 and Vanoe Counties. 20- Tungsten minerals...occur with sulfides in vein|j deposits in Cabarrus County. 21 22 23 24 25- U. S. GOVERNMENT PRINTING OFFICE:...Cabarrus, Randolph, Lee, Chatham, Moore, and Montgomery Counties. The gold deposits in this belt occur...deposits. 21 This belt passes through Gaston County. Tin veins in pegmatite and placer deposits derived...Halifax County. Tungsten occurs in North Carolina in two principal localities, in Cabarrus County associated |  | 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) | | Allen Crider Jr. (2012–2017) 8 10 KILOMETERS 9 VIRGINIA MAP LOCATION Tc Calvert and (or) Choptank Formations...bluish-gray quartz, plagioclase, microcline, and biotite with lesser amounts of muscovite, opaque minerals...monzodiorite, and subordinate quartz diorite. Composed of biotite, pale-green to pale-brown hornblende, epidotized...typical mineral assemblage of muscovite-quartz-biotite-chlorite (-plagioclase-magnetite-epidote). The...assemblage quartz-plagioclase-epidote-muscovite-biotite-chlorite-green-amphibole-magnetite. The mafic metatuff |  | | Report (issue) | | JL / Culpfeper and B arbour sville Basins, Virginia and Maryland C7 ll.S. / PAPER Triassic-Jurassic...Stratigraphy of the Culpeper and Barboursville Basins, Virginia and Maryland By K.Y. LEE and AJ. FROELICH U.S...stratigraphy of the Culpeper and Barboursville basins, Virginia and Maryland. (U.S. Geological Survey professional...Geology Culpeper Basin (Va. and Md.) 4. Geology Virginia Barboursville Basin. I. Froelich, A.J. (Albert...stratigraphy of the Culpeper and Barboursville basins, Virginia and Maryland. ......................... .....In |  | | Book | | TTTE GEOLOGY PHILADELPHIA COUNTY AND OF THE SOUTHERN PARTS OF MONTGOMERY AND By CHARLES E. BDCKS...regions : 1881. address Pleasantville, Venango county, Pa. Sutton VVall, to report on the coal and...and Fulton counties address Uniontown, Fayette county. Pa. W. G. Platt, geologist for Centre and Clearfield...all outcrops in the southern townships of Bucks county and new surveys were made along the Bound Brook...through Connecticut. Mr. Hall’s survey of Delaware county has only advanced far enough to show that the Schuylkill |  | | Report (issue) | | Geology of the Northern Part of the Culpeper Basin, Virginia and Maryland by K. Y. Lee U.S. Geological Survey...Geology of the Northern Part of the Culpeper Basin, Virginia and Maryland; by K, Y, Lee Introduction The Culpeper...here, cover about 1060 km , of which 82% is in Virginia and the remainder is in Maryland (Fig. 1). Figure...subdivided the red bed sequence of sedimentary rocks m Virginia which he thought to be entirely of Triassic age...000, in the Northern Part of the Culpeper Basin,Virginia and Maryland lowest stratigraphic unit of the |
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