 | | Report (issue) | | Relay Quadrangles, Howard, Baltimore, and Anne Arundel Counties, Maryland By Avery Ala Drake, Jr. 1 ...RELAY QUADRANGLES, HOWARD, BALTIMORE, AND ANNE ARUNDEL COUNTIES, MARYLAND by Avery Ala Drake, Jr. INTRODUCTION...largely in Howard County, Maryland. The northeasternmost part is in Baltimore County, Maryland and about 0...0.03 square miles is in Anne Arundel County. Most of the area is suburban and almost all outcrops are...GEOLOGY This part of the Maryland Piedmont is on the east limb of the Baltimore structural culmination |  | | Journal (article/letter/editorial) | | PETROLOGY OF THE BALTIMORE GABBRO, MARYLAND BY NORMAN HERZ ABSTRACT The Baltimore gabbro, made classic...chamber are discussed. Differentiation trends of Maryland rocks show absolute enrichment in iron throughout...989 992 992 993 995 980 NORMAN HERZ—BALTIMORE GABBRO, MARYLAND Figure Page 13. Statistical diagrams...complex.... 1008 15. Differentiation trend of Maryland rocks.. 1011 16. Deuteric and hydrothermal effects...compositions compared INTRODUCTION The Problem The Baltimore gabbro complex has intrigued geologists since |  | | Report (issue) | | Prince Georges, Howard, and Anne Arundel Counties, Maryland and the District of Columbia By Avery Ala Drake...PRINCE GEORGES, HOWARD, AND ANNE ARUNDEL COUNTIES, MARYLAND AND THE DISTRICT OF COLUMBIA By Avery Ala Drake...Drake, Jr. INTRODUCTION This part of the Maryland Piedmont is largely in Montgomery and Prince Georges...GEOLOGY This part of the Maryland Piedmont is on the east limb of the Baltimore structural culmination...the Loch Raven-Laurel tectonic motif and the Baltimore thrust sheet. LOCH RAVEN-LAUREL TECTONIC MOTIF |  | | Report (issue) | | Deposits in Serpentine Rocks Of the Piedmont Upland Maryland, Pennsylvania And Delaware By NANCY C. PEARRE...districts ______ -._-_____-_____-___._. Montgomery County, Md_-_-_---_---_-_-----------_-__--_-_-_Soldiers...Marriottsville districts _-_____-___.___.____ Hollofield district ....._..._....-_-._..-._-.-_-.__._....descriptions_______________________________________ Montgomery County, Md___-_______________________.__ Etchison mine_____-_-...descriptions_______-----_---_-_--_-__-_-_______-_-__ Hollofield district.__..._._._._._.._..._____________ Alberton |  | | 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...Rhythmically.layered gabbro of the Baltimore Gabbro Complex at Ilchester, Maryland. Figure 6. Triassic diabase...of Anne Arundel, Prince George's/and Baltimore Counties, Maryland (Sterrett, 1911). Figure 9. Distribution |  | | Report (volume) | | 147 N., R. 84 W., 4 km N of Riverdale, McLean County, N. Oak. Named for Aggie Brown Coulee, which flows...NW1/4NW1/4SW1/4SW1/4 sec. 17, T. 85 N., R. 7 W., Linn County, Iowa. A-L Peak Rhyolite Oligocene 1. New Mexico...structures in the San Mateo Mountains, Socorro County, New Mexico: New Mexico Geol. Soc. Spec. Pub. 5...Mountains, 10. sees. 33-35, T. 4 S., R. 6 W., Socorro County, N.Mex. Anapra Sandstone 1. Early Cretaceous 2...6. 7. 9. 10. at Cerro de Cristo Rey, Dofta Ana County, New Mexico, Appendix 2 in Lovejoy, E. M. P., Geology |  | | Report (volume) | | ................................. Androscoggin County............................................. Auburn......................................... Lincoln County ............................................................-...:.....-................. Oxford County........................;............................................................. Sagadahoc County.. '...... ............................................................................ Hartford County ..... ....................:............ ...... |  | | Book (volume) | | Dahlonega Co. and Rabum Co., and the McDuffie County Belt extending through portions of McDuffie, Warren...Sphalerite. BALDWIN COUNTY MILLEDGEVILLE, at state farmjasper. BANKS COUNTY COMMERCE, along Hwy. 59...along adjoining Co. linerock crystal. BARROW COUNTY WINDER, along rd. to Jefferson and 1½ mi. inside...Guide for Rock Hounds in the United States BARTOW COUNTY AREA, Saltpeter Cave, as floatjasper. CARTERSVILLE:...agate, (banded, various colors), jasper. BIBB COUNTY MACON: at Holton Quarry, 7½ mi. NWagate; N |  | | Report (issue) | | ...........................................96 Maryland ................................................Arkansas, Alabama, Georgia, North Carolina, Virginia, Maryland, Pennsylvania, Massachusetts, Vermont, and New...principally for dimension stone uses. Talc production in Maryland has been from various serpentinite bodies present...altered serpentinite and are similar to those in Maryland. Deposits in Middle Proterozoic dolomitic marble...Thus, it has dioctahedral structure analogous to muscovite. Pyrophyllite and talc have many similar properties |  | | Report (issue) | | ____________ Map of the Patapsco River basin, Maryland ______________________________________________...decline in altitude of the Appalachian crest in Maryland and Pennsylvania may be related to the tectonic...southeast of the Triassic and Jurassic basins in Maryland and southeastern Pennsylvania is comparatively...DIFFERENTIAL UPLIFT, PIEDMONT AND BLUE RIDGE of the Maryland Piedmont. I described the area briefly in an earlier...FIGURE 10. - Map of the Patapsco River basin, Maryland. Numbers in circles identify first-order tributaries |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Book (volume) | | 600 to 800 feet thick in the north. ALEXANDER COUNTY FAYVILLE, area stream gravels⎯agate, jasper, rare...⎯agate, jasper; d RR siding of Clay⎯agate. CALHOUN COUNTY AREA, shores of the Mississippi R., in the Warsaw...crystals). CRAWFORD COUNTY PALESTINE, area deposits⎯Siderite. EDWARDS COUNTY AREA, T. 1 S, R. 10 E...E, regional deposits⎯Siderite. FULTON COUNTY FARMINGTON, W 6 mi. on Rte. 116 to the Rapatee No. 5 strip...mine⎯pyritized gastropods (Pennsylvanian age). GRUNDY COUNTY AREA: c Regional rd. and RR cuts and banks of Mason |  | | Report (volume) | | Holman, Bangor. Maryland........ .Prof. E. B. Mathews, Johns Hopkins University, Baltimore. Michigan......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...Jefferson County, at Elyton; Lee County, at Chewacla lime works; St. Clair County, at Gfeensport; Shelby |  | | Report (volume) | | ............................................. Maryland.................................................Maryland____Prof. E. B. Mathews, Johns Hopkins University, Baltimore. Michigan____Mr. R. A. Smith, Lansing. Dr. A....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.; |  | | 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 ...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...dollars at the noted locality of Cowee Valley, Macon County, North Carolina. An enthusiastic family found and...visited the well known old Rutherford mine in Amelia County, Virginia, and found bright spessartine garnets |  | | Report (volume) | | General features____________________________ Coosa County _________ ____________________ Randolph County...Cherokee County_____________________________ 72 Elbert County _____________________________ 75 Hall County__...County_______________________________ 76 Hart County. ___ __ __________________ 77, Lumpkin and Union counti...___________ S3 Pickens County _______-______________________ 83 Rabun County-_____________________________...____________ 86 Troup County ________________________________ 86 Upson County _______________________________ |  | | Book | | Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri...listed by county and community, range and distance. Whenever the collector crosses a county line, he will...of the county he is entering posted alongside the highway. By looking up the state and county, the user...guide can determine the collecting sites in that county by range and distance from the major cities and...information to reach a specific spot within a particular county. Many old localities listed here have, literally |  | | 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...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... Figure 1-3. Geological field ca1np, Son1erset County, in 1839. Pai~ted by Wi!liam van Starkenborg in |
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