 | | Journal (issue) | | GEOLOGICAL SURVEY Number 67 The El Oro metamorphic complex, Ecuador: geology and economic mineral deposits...Bonilla, W, and Duque, P. 1995. The El Oro metamorphic complex, Ecuador: geology and economic mineral deposits...Energia y Minas Quito Ecuador P Duque Escuela Politenica Nacional Casilla 2759 Quito Ecuador Contributors NJ...Cover photograph Stunted cloud forest, southern Ecuador ( C Mort.imer, BGS) iii CONTENTS Abstract 1...General setting 5 Geology of Sub-province I 6 Tahuin semi-pelitic division 6 El Tigre unit 6 La Victoria unit |  | | Report (issue) | | 11 The metamorphic belts of Ecuador The metamorphic belts of Ecuador CQVer photograph Cerro Hermoso... OVERSEAS MEMOIR 11 The metamorphic belts of Ecuador M Litherland,] A Aspden and RAJemielita Keyworth...andjf.MIEl,ITA, RA. )994. The metamorphic belts of Ecuador. Overseas Memofr of the British Geologi-cal Survey...7 Andean metallogenesis 9 Metamorphic rocks of Ecuador l0 Stratigraphical nomenclature 10 Metamorphic...and skarns 33 Alao terrane 36 Alao-Paute unit 36 El Pan unit 38 Maguazo unit 39 Guamote terrane • 41 |  | | Report (issue) | | 26 15. Geologic map of the Pumpkinvine Creek and Canton Formations . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . 34 20. Map showing Canton Formation type locality ......................... . . . . . 35 23. Map showing Lost Mountain Amphibolite type locality ...................... 35 24. Map...Kingston Cartersvil le AIIatoona Dam South Canton Canton Birmingham Cumming Bu ford Dam Fiowery Branch...quadrangles. Ridge The Blue Ridge geologic province as defined in this report bears little resemblance |  | Higgins, M.W., Atkins, R.L., Crawford, T.J., Crawford, R.F., Brooks, Rebekah, Cook, R.B. (1988) The structure, stratigraphy, tectonostratigraphy, and evolution of the southernmost part of the Appalachian Orogen. Professional Paper 1475. US Geological Survey doi:10.3133/pp1475 | Report (issue) | | Mountain and Salem Church Gneisses (abandoned), Cohutta Schist (abandoned)..................................Dog River Formation (abandoned) .................. Andy Mountain Formation (abandoned) ............. Tallulah...Waresville Amphibolite or Formation (abandoned) ... Pumpkinvine Creek Formation (abandoned) ............(revised) .................. Mud Creek Formation (abandoned) ................. Cedar Lake Member (revised)...Rock Gneiss (abandoned)..................................... Univeter Formation (abandoned) .......... |  | | Report (issue) | | Wiener North Carolina Geological Survey graphic province, a major geographic entity that extends for nearly...southern Pennsylvania into Georgia. The width of the province in this vicinity is about 75 miles. The northwestern...a southern section. Hack’s Southern Blue Ridge Province extends from the Roanoke River in Virginia south-westward...He further subdivides the Southern Blue Ridge Province into topographic subunits. Several subdivisions...Highlands, the Asheville Basin, and the Waynesville- Canton Basin. Lower, much more subdued landscapes characterize |  | | Report (volume) | | includes geologic age, geographic location, geologic province, type locality, subunits, and a summary of the...the type locality is listed first. • Geologic province of type area as established by the American Association...Cretaceous (Comanchean) Florida South Florida province Applegate, A.V., Winston, G.O., and Palacas, J...Proterozoic or Cambrian Virginia Piedmont-Blue Ridge province Drake, A.A., Jr., and Lyttle, P.T., 1981, The...Mississippian Oklahoma Ouachita tectonic belt province Pitt, W.D., Fay, R.O., Wilson, L.R., and Curiale |  | | Journal (article/letter/editorial) | | Formation, metasedimentsand metavolcanicsof the Canton Formation, metavolcanicsof the Mud Creek Formation...years,Georgiawasoneof the leadinggold- least217 abandoned minesandprospects. Although producingstates.However...undifferentiated • Formation .• __undifferentiated Helen Canton Member Metatrondhjemite Formation ,•.•.• undifferentiated...tu H gfg --New GeorgiaGroup undifferentiated Canton Formations Plunging overturned •) 34 ø Overturned...Creek Formation,the PumpkinvineCreek Formation, the Canton Formation, the Kellogg Creek maficcomplex,and the |  | | Journal (article/letter/editorial) | | western Georgia morphosedto kyanite grade to form amphibolite, wasmined and prospectedextensivelyfrom prior...gold-miningoperationswere numerous. layeredwith amphibolite. At least four fold events have affected rocks...outcropbelt that extendsfrom centralCarroll to Canton interpretationsof the stratigraphicsuccession are...Contact /' Gradational contact •' Abandoned mine X Abandoned prospect MUD CREEK FORMATION (no stratigraphic... a[a[a[a[• AMPHIBOLITE / HORNBLENDEGNEISS • BIOTITE GNEISS / MICA SCHIST / AMPHIBOLITE KYANITE QUARTZ |  | | Report (issue) | | 0 0 0 0 0 0 Pumpkinvine Creek Formation Canton Formation 0 0 0 0 0 0 0 0 0 0 0 0 ...o Burnt Hickory Ridge District 0 0 0 South Canton District 0 0 o Introduction 0 0 0 Gold... Modal analysis of selected rocks of the South Canton district . . . . . . . . . . . . . . . . . . ....gold belt. cover pocket 2. Geology of the South Canton district. 3. Geology of the Burnt Hickory Ridge...the Dahlonega gold belt. These belts extend from Canton in Cherokee County southwestward to the Georgia-Alabama |  | | Report (issue) | | Chile chemistry Colombia crystallography Cuba Ecuador French Guyana Honduras hydrology Latin America...Central Chile quimica Colombia cristalografia Cuba Ecuador frances Guyana Honduras hidrologia Latinoamerica...(Costa Rica) cabelleria (Cuba) cabelleria (Ecuador) cabelleria (El Salvador) cabelleria (Guatemala) cabelleria...(Nicaragua) cabelleria (Santo Domingo) cantero (Ecuador) carga (Venezuela) caro (Santo Domingo) corral...manzana (Argentina) manzana (Costa Rica) manzana (El Salvador) manzana (Guatemala) manzana (Honduras) |  | | Report (issue) | | ....•..••....•.••.......•................... 4 Canton Formation· .......•...•...........•..............Photograph of "chicken track" texture of an amphibolite from the Pumpkinvine Creek Formation ..........16. Photomicrograph of garnets in schist of the Canton Formation .......................................Photomicrograph of chlorite after biotite in schist from the Canton .Formation .......................... . 16 18.............. . 18 19. Relationship between abandoned gold mines and lithology- Auraria/Dahlonega area |  | | Report (issue) | | contact ... .... .. . ..... . Light colored amphibolite dike .. .... . . .. .. . .. .................. Blue Ridge physiographic province Piedmont phyaiographic province Virginia Blue Ridge complex ....limeatone formation 83 Triassic area Diabase and amphibolite dikes ............. 83 Index ................. .. 4 2. View from Superior Stone Company's quarry, showing Ragged Mountains in the background .....limestone in Everona syncline expsed in Garland Quarry on State Highway 53 near Buck Island Creek. .. |  | | Report (issue) | | Gale-silicate gneiss...................... 43 Amphibolite............................... 43 Greenstone...Ordovician rocks....... 50 Greenschist to upper amphibolite facies in other Paleozoic(?) rocks.............Frontino Gold Mines Ltd........................ 186 El Limon mine .................................. 189............................................. 211 El Jordan.................................................................. 217 Placer andalusite at El Bagre.................... 217 Exploitability.. |  | | Journal (issue) | | volcanic complex, along with the small mine dump. Abandoned 4 open pit mines, waste rock dumps, and reclaimed...TodaClasede Mineralesy Pastasde Cobre,Plomo,Plata, Oro, Mercurio, etc.; con Descripcion de los Caracteres...father would take me fishing for perch at an abandoned coal dock float silver/copper. extending out in...Annual Gem & Mineral Show and Swap Canton Pavilion at 90 Lincoln St., Canton. NY. Toe conference includes mineral...Archaean Karonie gold deposit, Eastern Goldfields province, Western Australia. Honeaite is found with native |  | | Report (issue) | | ...................................... 41 Amphibolite......................................... 41......... 138 El Cairo quarry....................................... 140 Neira quarry.................statement................................... 149 El Silencio mine..................................*...regionally metamorphosed to greenschist (locally amphibolite) facies during the Permain or early Triassic;...; Dr. Ricardo Vasquez ' t*i ' and Gia de Cementos El Gairo, S, A.; Dr. Alvaro Londono and Gia. de Cementos |  | | Journal (article/letter/editorial) | | (left). Rose fluorite and quartz, Goscheneralp, Canton Uri. Fluorite octahedron about 8 mm across. Private...excavations in GalloRoman sites in southern Switzerland (Canton Valais, Binn) several crystal treasures were discovered...particular sulfosalt minerals from the Lengenbach quarry in Binntal-which, at least in part, are still valid...mineral locality in the Alps, namely, the Lengenbach quarry in Binntal. In 1958, due to the initiative of Prof...distinctive sulfosalt minerals from Lengenbach quarry accessible to modem research. The syndicate has |  | | Report (volume) | | side of road to Cerro de Cristo Rey and E of abandoned site of Bowen; SW1/4SE1/4SW1/4 sec. 9, T. 29 S... 1 (in pocket) Sillimanitic biotite gneiss, amphibolite, schist, calcsilicate rocks Medium-gray 1,580...10. Type locality: Martin Marietta Co. Belgrade quarry, just E of intersection of County Route 1434 and...pocket) 4. Sillimanitic biotite gneiss with amphibolite 5. Medium-gray 1,100 m 6. 1. Medium-grained,...1435-A, p. A126 4. Quartz-plagioclase-hornblende amphibolite and felsite 5. Dark-green, gray 6. 305 m 1. Interlayered |  | | Report (volume) | | Bl 2 2 3 3 3 4 4 Amphibolite and metarhyolite_---------_------__-------Amphibolite.---_-----_-------...roof pendants or inclusions of metarhyolite and amphibolite of unknown age in the southeast corner, of quartzite...the first regional metamorphism shown by the amphibolite and metarhyolite. Group (1) may be Precambrian...represented by northwest-trending structures in the amphibolite and metarhyolite and the other by northeastward-trending... and parts of Milton, Dedham, Westwood, Dover, Canton, Sharon, and Walpole. The Blue Star Memorial Highway |  | | Report (issue) | | Salt PART 61 III. Preface 269 Chapter I, El Dorado County. Introduction 271 Description 2...CHSOMIi'E Copper General Geology of "Mother Lode" in El Dorado County Gold 2 Quartz Mines Placer Mines...showing method of mining Colemanite at Biddy McCarty quarry. Lower Biddy McCarty Mine in distance Hauling borax...^Bonnie -- Nevada north of Keeler 'I'V^'Z Marble quarry of the Inyo Marble Company method of prospectmg...dredge on Honcut Creek Power Co 1|unt aredge of the Oro Water, Light & Creek Kennedy Ranch dredge on Honcut |  | | Book | | Continental Sub-Plate Chocó Arc Caribbean Large Igneous Province Central Tectonic Realm circa, approximately centimeter...North Andean belt Northwestern South America Oca-El Pilar Transform Fault System Pacific Terranes Romeral...Garzón Massif, and under the Putumayo basin. In Ecuador, the GSR underlies the Putumayo-Napo basin, the...eastwards into the Amazon basin of both Colombia and Ecuador. The Guiana Shield formed the backstop for the...northwestward, along the Santa Marta-Bucaramanga and Oca-El Pilar fault systems, in the process uplifting the |  | Hall, R.B., Feininger, Tomas, Barrero, L., Dario, Rico H., Alvarez, A., , (1970) Mineral resources of parts of the Departments of Antioquia and Caldas, Zone II, Colombia. Open-File Report Vol. 1970 (70-148) US Geological Survey doi:10.3133/ofr70148 | Report (issue) | | (CON'T.5 Gold and silver (con't.) Lode mines (cont.) El Limon mine.............. 40 Sma11 lode mines 43...cement industry in Zone IT.....*... 108 Cementos El Cairo........................... 110 Cementos del...General statement........................... 126 El Silencio mine............................ 127 Other...Amalfi...................................... 135 El jordan 137 « « > « Limestone and calcite marble...« « «««««« « «« ««« « 157 Placer andalusite at El Bagre................... 158 Exploitability... |  | | Report (issue) | | Paleozoic carbonates of the Valley and Ridge Province form a westerly miogeocline, Grenvillian basement...geanticlinal Blue Ridge Province, and the metamorphic belts of the Piedmont Province comprise an easterly...Ashe the on-strike equivalent (Brown, domains amphibolite dominated Lynchburg Formation in Virginia, Formation...sulphur-rich shale sequences. It is notable that the amphibolite units typically concentrate at lithological breaks...a strong west to east mid-greenschist to mid-amphibolite facies metamorphic gradient. Although a gross |  | | Journal (issue) | | Vol. 20 May, 1974 No. 2 NOTES ON SOME ABANDONED COPPER, LEAD, AND ZINC MINES IN THE PIEDMONT OF VIRGINIA...VIRGINIA James L. Poole INTRODUCTION The Piedmont province of Virginia is bordered on the east by unconsolidated...igneous and metamorphic rocks of the Blue Ridge province. Igneous and metamorphic rocks of Precambrian...Triassic sedimentary and minor igneous rocks. In this province mineral wealth has been sought since the earliest...copper, lead, or zinc occurrences in the Piedmont province of Virginia. , k (1) The mineralized district |  | Ulmius, Jan, Möller, Charlotte, Page, Laurence, Johansson, Leif, Ganerød, Morgan (2018) The eastern boundary of Sveconorwegian reworking in the Baltic Shield, defined by 40Ar/39Ar geochronology across the southernmost Sveconorwegian Province. Precambrian Research, 307. 201-217 doi:10.1016/j.precamres.2018.01.008 | Journal (article/letter/editorial) | | geochronology across the southernmost Sveconorwegian Province Jan Ulmius, Charlotte Möller, Laurence Page, Leif...geochronology across the southernmost Sveconorwegian Province, Precambrian Research (2018), doi: https://doi...geochronology across the southernmost Sveconorwegian Province Jan Ulmiusa,*, Charlotte Möllera, Laurence Pagea...western part of the Eastern Segment consists of amphibolite- to granulite-facies pervasively deformed gneisses... characterized by non-penetrative greenschist- to amphibolite-facies deformation zones. There, muscovite apparent |  | | Report (issue) | | geological guidebooks to various areas of the province, in the hope that these guidebooks will help to...fossils, Lakefield quarry. 25 Brachiopod, Gastropod and Nautiloid fossils, Lakefield quarry. 27 Pelecypod...Trilobite and miscellaneous fossils, Lakefield quarry. 29 An example of unconformity between limestone...gneiss with nepheline pegmatite, Golding-Keene quarry on the York River. Corundum, Lily Robertson Cooney...Quadeville. Carson Lake, Highway 60. Feather amphibolite dike in marble, Umfreville. Lake L'Amable, Highway |
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