 | Ribeiro, Yuri, Figueiredo e Silva, Rosaline C., Lobato, Lydia M., Lima, Luiz Claudio, Rios, Francisco J., Hagemann, Steffen G., Cliff, John (2015) Fluid inclusion and sulfur and oxygen isotope studies on quartz-carbonate-sulfide veins of the Carvoaria Velha deposit, Córrego do Sítio gold lineament, Quadrilátero Ferrífero, Minas Gerais, Brazil. Ore Geology Reviews, 67. 11-33 doi:10.1016/j.oregeorev.2014.10.032 | Journal (article/letter/editorial) | | gold lineament, Quadrilátero Ferrífero, Minas Gerais, Brazil Yuri Ribeiro a, Rosaline C. Figueiredo e...Hagemann d, John Cliff d a Universidade Federal de Minas Gerais, CPMTC-Instituto de Geociências, Av. Presidente...– MG, Brazil Aurizona Mineração: Avenida dos Holandeses, Ponta do Farol, São Luís – MA, Brazil c Centro...and sills are parallel and crosscut the host metasedimentary sequence. All these rocks exhibit alteration...metamafic dikes and sills. The latter crosscut the metasedimentary sequence, are extensional and display no preferential |  | Campanha, G.A.C., Faleiros, F.M., Cawood, P.A., Cabrita, D.I.G., Ribeiro, B.V., Basei, M.A.S. (2019) The Tonian Embu Complex in the Ribeira Belt (Brazil): revision, depositional age and setting in Rodinia and West Gondwana. Precambrian Research, 320. 31-45 doi:10.1016/j.precamres.2018.10.010 | Journal (article/letter/editorial) | | Manuscript The Tonian Embu Complex in the Ribeira Belt (Brazil): revision, depositional age and setting in Rodinia...Basei, The Tonian Embu Complex in the Ribeira Belt (Brazil): revision, depositional age and setting in Rodinia... The Tonian Embu Complex in the Ribeira Belt (Brazil): revision, depositional age and setting in Rodinia...Instituto de Geociências da Universidade de São Paulo, Brazil 2 School of Earth, Atmosphere & Environment,...Embu Complex in the Neoproterozoic Ribeira Belt of Brazil provides a record of sedimentation associated with |  | | Journal (article/letter/editorial) | | and occurrences of the CrixaÂs Gold®eld, central Brazil Received: 14 November 1999 / Accepted: 18 February...Gold production in the state of GoiaÂs, central Brazil, began in the 18th century, when the bandeirantes...bandeirantes (Portuguese Far West pioneers of colonial Brazil) recovered gold mostly from alluvial and, locally...BrasõÂ lia, P.O. Box 04421, BrasõÂ lia 70919-970, Brazil E-mail: hjost@tba.com.br did the region became...occurrences of the northern domain of the central Brazil Archean terrain, here referred to as the CrixaÂs |  | | Report (issue) | | Development of the Quadrilatero Ferrifero Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Development of the Quadrilatero Ferrifero Minas Gerais, Brazil By JOHN VAN N. DORR 2d REGIONAL GEOLOGY...GEOLOGY OF THE QUADRILATERO FERRIFERO, MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International |  | | Journal (article/letter/editorial) | | of groundwater environment changes in a fractured rock system: evidence from fracture-filling calcite—Seung-Gu...oxymica associated with sugilite from the Wessels Mine, South Africa: Crystal chemistry and 40Ar-39Ar dating—Edwin...Trapping and mobilization of arsenic and lead in former mine tailings. Environmental conditions effects—A. Courtin-Nomade...dissolution of pyritic sludge from the Aznalcóllar mine (SW Spain)—C. Domènech, J. de Pablo, and C. Ayora...395 The mineralized veins and the impact of old mine workings on the environment at Segura, central Portugal—I |  | | Report (issue) | | ……………………………………………………………………………………………………...15 Minor rock types associated with the muscovite-quartz-biotite-garnet...hornfels …………………………………………………………………………………………………19 Pilar phyllite member ……………………………………………………………………………………………...……………………………………………………………………………………………………...29 Page Minor metasedimentary rock types occurring in the schist member ……………………………………………...tuff ……………………………………………………………………………………………………………52 Santa Fe formation …………………………………………………………………………………………………...statement …………………………………………………………………………………………………….55 Pilar anticline ……………………………………………………………………………………………………… |  | Ulrich, Stanislav, Hageman, Steffen, Marques, Juliana Charão, Figueiredo, Frederico Lana A. R., Ramires, João E. F., Frantz, José Carlos, Petersen, Klaus (2021) The Orogenic Crixás Gold Deposit, Goiás, Brazil: A Review and New Constraints on the Structural Control of Ore Bodies. Minerals, 11 (10) 1050 doi:10.3390/min11101050 | Journal (article/letter/editorial) | | Review The Orogenic Crixás Gold Deposit, Goiás, Brazil: A Review and New Constraints on the Structural...Petersen, K. The Orogenic Crixás Gold Deposit, Goiás, Brazil: A Review and New Constraints on the Structural... Bento Gonçalves 9500, Porto Alegre 91501-970, Brazil; juliana.marques@ufrgs.br (J.C.M.); jose.frantz@ufrgs...Serra Grande, AngloGold Ashanti, Crixás 76510-000, Brazil; flarfigueiredo@hotmail.com (F.L.A.R.F.); JERa...Target Latin America, Marista, Goiânia 74150-030, Brazil; klaus@targetlatinamerica.com Correspondence: |  | | Journal (issue) | | mining-themed park was approved in 2000, and the Minas de Almadén y Arrayanes The Mineralogical Record...level of the underground mine was refurbished to accommodate visitors, showing mine workings dating from...village of Almadenejos we find: The Vieja Concepción mine. Here it is possible to visit part of the historic...(dating from 1755 to 1757). The Nueva Concepción mine. The Baritel de San Carlos (San Carlos shaft house)... Also included is the Refugio shaft and various mine buildings. HISTORY AND MINING Archeological remains |  | | Book (edition) | | walking tour of the Harding pegmatite mine. Before entering the Harding mine property, a permission–release...Harding pegmatite mine; Al Greslin, former superintendent, and Bill O'Toole, former mine clerk, Molycorp...the New Mexico State Records Center and Archives, Santa Fe, with the assistance of Al Regensberg and J.... Richard Salazar; the Museum of New Mexico, Santa Fe; the Amon Carter Museum, Fort Worth; Cliff Mills...geologic history of the Taos region 20 The three rock types 26 How to use the road logs 28 Color photo |  | | Journal (article/letter/editorial) | | basement blocks also is possible. Exposed and drilled rock units assigned to the Tobago terrane include the...Peninsula; P = Paria Peninsula; EP = town of El Pilar; B = Barbados; G = Grenada; SV = St. Vincent; LF...consists mainly of pre-Cenozoic magmatic rock and sedimentary rock rich in volcanigenic particles (Speed...1991). The PT terrane's basement is mainly metasedimentary rock whose prograde metamorphism is of low rank...in this paper, has a basement of quartzose metasedimentary rocks whose prograde metamorphism is of high |  | van Schijndel, Valby, Stevens, Gary, Zeh, Armin, Frei, Dirk, Lana, Cristiano (2017) Zircon geochronology and Hf isotopes of the Dwalile Supracrustal Suite, Ancient Gneiss Complex, Swaziland: Insights into the diversity of Palaeoarchaean source rocks, depositional and metamorphic ages. Precambrian Research, 295. 48-66 doi:10.1016/j.precamres.2017.04.025 | Journal (article/letter/editorial) | | Preto, R. Diogo de Vasconcelos 122, Pilar, Ouro Preto 35400-000, Brazil *Corresponding author E-mail address:...combined U-Pb-Hf isotope data, two groups of metasedimentary rocks can be distinguished: an older Dwalile...metavolcanic rocks associated with BIF and clastic metasedimentary rocks, infolded with granitoid gneisses, which...number of complexly zoned zircon grains from metasedimentary rocks of the Dwalile greenstone remnant. By...with banded iron formation (BIF) and clastic metasedimentary rocks and. The largest occurrence is the boot-shaped |  | | Journal (article/letter/editorial) | | Geochemical and Nd-Pb isotopic evidence from metasedimentary rocks, southwestern North America S. M. MCLENNAN... Abstract-Early Proterozoic ( 1X- 1.7 Ga) metasedimentary rocks in northern New Mexico and southern Colorado...and Nd-Pb isotopic characteristics of some metasedimentary rocks deposited between about 1.80 and 1.69...evaluate the sedimentary history of these metasedimentary rocks, particularly as it relates to the questions...Formation is a complex sequence of elastic metasedimentary rocks ( amphibolite grade), commonly showing |  | | Book | | Geosciences Institute University of São Paulo São Paulo Brazil Pedro Oyhantçabal Departamento de Geodinámica Interna...recognized similarities in the ‘old granites’ of Brazil and southern Africa. On the other hand, du Toit...‘Brazilian system’ defined by Alcide d’Orbigny in Brazil (Beaumont 1844), arguably corresponding to the...geochronological data of the Precambrian basement of southern Brazil, Uruguay and Argentina were reported by Hart (1966)...and geochemical data of the Nico Pérez Terrane in Brazil and Uruguay in order to constrain its regional |  | Campanha, G.A.C., Faleiros, F.M., Basei, M.A.S., Tassinari, C.C.G., Nutman, A.P., Vasconcelos, P.M. (2015) Geochemistry and age of mafic rocks from the Votuverava Group, southern Ribeira Belt, Brazil: Evidence for 1490 Ma oceanic back-arc magmatism. Precambrian Research, 266. 530-550 doi:10.1016/j.precamres.2015.05.026 | Journal (article/letter/editorial) | | from the Votuverava Group, southern Ribeira Belt, Brazil: evidence for 1490 Ma oceanic back-arc magmatism...from the Votuverava Group, southern Ribeira Belt, Brazil: evidence for 1490 Ma oceanic back-arc magmatism...the Votuverava Group, southern 2 Ribeira Belt, Brazil: evidence for 1490 Ma oceanic back-arc magmatism...8 Universitária, CEP 05508-080, São Paulo, SP, Brazil 9 2 an GeoQuEST Research Centre, School of...rocks from the Votuverava Group (Ribeira Belt, Brazil). These mafic rocks 25 appear to be mostly subvolcanic |  | | Report (issue) | | ~800—1000 km is implied by apparent correlation of rock assemblages between the Caborca Block and the Inyo...geochemical character of igneous rocks to reveal rock patterns that reflect the formation and evolution...structure, isotope geochemistry, U-Pb geochronology, rock magnetism, and paleomagnetism that serve to assess...geochronologically with respect to the age of the rock units studied. These articles present diverse kinds...zircon populations separated from 33 Precambrian rock samples with field relations and maps based upon |  | | Book | | label: Aerial view of the Bingham Canyon copper mine, Kennecott Utah Copper, September 2003. Photo courtesy...Moreto, André Luiz Silva Pestilho, Mineral Province, Brazil Gustavo Henrique Coelho de Melo, Marco Antônio..., 2010, Grassroots exploration: Between a major rock and a junior hard place: Society of Economic Geologists...Tunnels Au-Ag-Zn-Pb deposit, Montana, United States (mine now exhausted). 1971: Recognized control of ore...high sulfidation epithermal Au-Ag deposit, Chile (mine now exhausted). 1971: First formal recognition |  | | Journal (volume) | | .........................319 EM61 Mineralogy of mine wastes and contaminated soil......................PHYSICS TH131 Influence of reaction kinetics on rock microstructure, texture and micro-chemistry: Assessing...12. The basalt composition has a restricted whole-rock compositional range (8-9% MgO) from 3% Hy-normative...and traceelement concentrations obtained on whole-rock samples and insitu by EMPA and LA-ICP-MS methods...mantle through to the near surface environment. The rock types and environments in which we find zircon seems |  | | Report (issue) | | Cordillera thus affords geologic insights into the rock masses of arc-trench systems at depth that are more...intra-oceanic arc: High-precision U-Pb zircon and whole-rock isotopic analyses from the accreted Talkeetna arc... nental South America and the origin of the El Pilar fault: Tectonics, v. 4, p. 41-69, doi: 10.1029/TC004i001p00041...and Nd isotopic characteristics of Triassic metasedimentary rocks: Geological Society of America Bulletin...slip right-lateral displacements in the Oca and Pilar faults that control the neotectonics of northern |  | | Journal (volume) | | A. Silvennoinen . . . On the Proterozoic metasedimentary rocks of the Northern Pohjanmaa schist area...Chemical Index of Alteration values for these two rock unit s are minimum values only. The primary, highly...(volcanic and tuffaceous) to intrusive (granitic) rock fragments decreases upwards in the Fig Tree Group...of potassium felds par (cf. Boles 1982). Volcanic rock fragments comprise less than 3 % of the Moodies...almost entirely of quartz and chert while volcanic rock fragments are rare and felds par is absent. The |  | | Book | | Department of Geological Sciences, University of Santa Barbara, Santa Barbara, CA 93106, USA Banerjee, D. M.,...cycled through the weathering-metamorphic-igneous rock cycle of our dynamic planet. Compaction has forced...Fe2~ dissolved during the weathering of average rock. It is difficult to estimate the concentration of...oxidant/acid required for complete weathering of the parent rock (Fig. 1). Holland and Zbinden (1988) divide the...characteristics and transformations of a vertical rock-saprolitesoil sequence in the North Carolina Piedmont |  | | Report (volume) | | Early, Middle, and Late, and for epochs. Informal rock terms lower, middle, and upper may be used where...of all words used in forming the names of formal rock-stratigraphic units be capitalized. All the geologic...or 11 late," if used by an author with the age of rock units, is changed to 11lower" or 11upper." The age...coal, and Bernadotte sandstone. Report presents new rock-stratigraphic classification of Pennsylvanian of...classification is retained but is independent of rock-stratigraphic classification. Type locality: Along |  | | Book (edition) | | chronostratigraphy, the study of the absolute age of rock units, that have come about during the last two...range of studies in modern environments and ancient rock units (Chapter 4). This genetic approach to stratigraphy...7. The fifth major development has been the the rock record. Plate tectonic theory has had a profound...are responsible for widespread cyclicity in the rock record. These have several ultimate causes and range...section is the very scrappy nature of the actual rock record available for inspection. Three types of |  | | Book | | Iftyifl 040 „epi-oo. 0e0l-0Q. Kick at the rock, Sam Johnson, break your bones but cloudy, cloudy...Wheeler, and Walter S. White. Engineering geology and rock mechanics: Mary Hill, Eugene Kojan, and David J...moval of the ore. Engineering geology, including rock and soil mechanics and mass movements. Geochemistry...organ, plant, or ablation till Loosely consolidated rock debris, formerly con¬ invertebrate; dorsal or anterior...bioglyph. ablation [geomorph] Separation and removal of rock material, basal plate is attached or onto which |
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