... Man Sits on the Other One Wearing a Manto Hat. Color. width 193 mm x height 249 ...
0000 - Gale Group | NCCO Photography
A. Martinez, Jaume Vergés, Javier Antonio Herrera Muñoz,
El mapa detallado de la terminacion oriental del manto inferior del Pedraforca muestra un sistema imbricado de ... abanicos deltaicos y aluviales). El cabalgamiento inferior del manto inferior del Pedraforca corresponde en superificie, casi en ... oblicuo (anticlinal de Vilada-Lillet) situado en el manto infrayacente del Cadi. Este cabalgamiento inferior es intersectado, ... por el cabalgamiento de Vallfogona (cabalgamiento inferior del manto del Cadi). Los conglomerados sinorogenicos asociados al manto inferior del Pedraforca se depositaron durante la etapa ...
Tópico(s): Archaeological and Historical Studies
1988 - University of Barcelona | Acta geológica hispánica/Acta geologica hispanica
R., J. H. P., K., BENJAMIN HADLEY.,
... And Others., Admiralty Court, Thursday, May 17. The Manto.. News in Brief. Births. Marriages. Deaths.
1832 - Gale Group | TDA
Charles R. Stern, Kiyoto Futa, Sandra Saul, M. Alexandra Skewes,
... de minerales, indican que estas inclusiones derivaron del manto Iitosferico subcontinental. Las condiciones de equilibrio de los ... harzburgitas esteriles. En las partes mas profundas del manto litosferico sub continental, representadas por las inclusiones, entre ... precambricos de Africa, sugieren que la acrecion del manto litosferico bajo el extremo sur de Sudamerica fue ... estabilizados bajo la corteza continental, este material del manto se encontraba evolucionando junto con el manto suboceanico actual. La mayor parte de las diversas ...
Tópico(s): Geological and Geophysical Studies Worldwide
2010 - National Geology and Mining Service | Andean geology
C. Welborne Piper, W. T. Pond, Mark Blow, F. C. Tilney, C. H. Claudy, Manto Vano,
Frontmatter: Abel's Photographic Weekly, Terms. Display ads: Tarcole, Central Plates, 'Tis Here—Maybe!, Ansco Company, Kodak Finishers, Artura, Efficiency ...
1918 - Gale Group | NCCO Photography
Andrew G. Conly, S. D. Scott, H. Bellon,
... Zn mineralization contained within stratiform ore beds or mantos, the Boleo district of central Baja, Mexico, also ... and weathering-related metal oxide minerals. Within the mantos, Mn oxides occur as concentric nodules, disk-shaped ... and X-ray amorphous Mn oxide. Chemically, the manto oxides are unique owing to their extraordinarily high ... the genetic classification of Mn oxides within the mantos. A new MnO 2 -Fe 2 O 3 ... Mn oxides. Based on the new classification scheme, manto Mn oxides record a complex interaction between hydrothermal ...
Tópico(s): Geochemistry and Geologic Mapping
2011 - | Economic Geology
Karolyn Shindler, Stephen Johnson, John Dugdale, Trevor Preen, Ian Hislop, E. Doyen, Margaret Walters, Italo Pardo, David Baker, Derek Cooper, Stephen Fender, Ricshaw, Nigel Williams, Roisin McAuley, Richard Combs, John Lyttle, John Grimshaw, Mark Tully, David Berry, Bruce Dessau, John Marshall, Jim Hiley, David Pownall, David Tereschuk, Stephen Walsh, Monica Walker, Saadat Hasan Manto, Peter Fiddick, Jenni Murray, Farrukh Dhondy, Carol Rumens, James Naughtie, Peter Hillmore, Douglas Kennedy, Nicholas Kenyon, Oliver Owen, Richard Cork, Peter Foges, David Murray, Bill Pannifer,
The Listener The Listener Contents Quitting the space race Britain's technological future burnt up on re-entry India at a new crossroads Something's cooking— ...
1987 - Gale Group | The Listener GDA
Anne MacDonald, Marek J. Kreczmer, Stephen E. Kesler,
... oxide capping near surface and from unoxidized veins, mantos, and chimneys to a depth of 1 km ... marine sediments that is overlain by terrestrial rhyolites. Manto and chimney mineralization followed development of skarn around ... ore. The veins cut the quartz monzonite stock. Manto and chimney mineralization is characterized by partial replacement ... the largest replacement orebodies, the Cueva Santa Branch Manto in the central part of the mine, contains ... antiformal folding. Trends in grade distribution throughout the manto follow the orthogonal fractures, which are filled by ...
Tópico(s): Geochemistry and Geologic Mapping
1986 - NRC Research Press | Canadian Journal of Earth Sciences
D. W. Beaty, Charles G. Cunningham, Robert O. Rye, Thomas A. Steven, Eliseo Gonzalez-Urien,
... strata-bound Pb-Zn-Ag-Au-Cu bodies (mantos) that replaced as many as 15 carbonate beds ... volcanic rocks of the Marysvale volcanic field. The mantos are stacked along a prominent, steeply dipping axial ... thin symmetrically away from it. Where unoxidized, individual mantos consist almost entirely of sulfides (pyrite-galenasphalerite-chalcopyrite), ... rocks form indistinct envelopes around the veins and mantos. A K-Ar age of 14 m.y. ... one of these altered envelopes indicates that the manto formed during the final stages of igneous activity ...
Tópico(s): earthquake and tectonic studies
1986 - | Economic Geology
... volumen y el enfriamiento de la cuna del manto astenosferico sobre la placa subductada y, consecuentemente, un ... la zona de generacion de magmas en el manto, bajo el arco en esta region. En contraste, ... la disminucion en el volumen y enfriamiento del manto bajo el arco asociado a la disminucion del ... menor y al enfriamiento de la cuna del manto bajo el arco, resulto en: 1. un aumento ... componente derivada de la placa subductada anadida al manto bajo el arco; 2. un aumento en la ... componentes derivados de la placa subductada en el manto disminuido bajo el arco; y 3. condiciones de ...
Tópico(s): earthquake and tectonic studies
1989 - National Geology and Mining Service | Andean geology
Delfino C. Ruvalcaba-Ruiz, Tommy B. Thompson,
... mine ore deposits consist of replacement chimney and manto bodies, disseminated sulfide bodies, and vein deposits hosted ... with increasing distance from the veins.Chimney and manto bodies contain pyrite, pyrrhotite, sphalerite, chalcopyrite, galena, tetrahedrite, marcasite, arsenopyrite, and silver minerals. Chimney and manto bodies predate or are contemporaneous with base metal ... salinity increases in sphalerite. Filling temperatures in chimney, manto, and deep vein quartz and calcite range between ...
Tópico(s): Geological and Tectonic Studies in Latin America
1988 - | Economic Geology
Andrew MacFarlane, Nobumichi Shimizu,
... measured in pyrite and galena from adjacent stratabound manto orebodies and crosscutting veins in the Hualgayoc district ... sulfur in pyrite and galena from vein and manto deposits have a total range from −20 to 10%.. Sulfur in manto galenas has a wide range of isotopic compositions ... have overlapped temporally with the later stages of manto mineralization and continued after manto formation ceased. Sulfur isotope values in pyrite and ... on average than the same sulfides in the mantos, and δ 34 S values of vein galenas ...
Tópico(s): Paleontology and Stratigraphy of Fossils
1991 - Elsevier BV | Geochimica et Cosmochimica Acta
Andrew MacFarlane, Ulrich Petersen,
... in which veins are closely associated with stratiform (manto) orebodies. Steeply dipping veins containing mainly galena, sphalerite, ... Guyana shield in Venezuela.Lead in vein and manto galenas from Hualgayoc is isotopically indistinguishable and coincides ... of the Tertiary plutons. The vein and the manto ores thus probably formed from the same solutions. ... homogenized by the time of ore formation.The manto ores are interpreted to be metasomatic bodies formed ... overlap of paragenetic sequences in the vein and manto ores and the orderly progression of fluid inclusion ...
Tópico(s): Geochemistry and Geologic Mapping
1990 - | Economic Geology
Produção Nacional
Tiago Jalowitzki, Rômmulo Vieira Conceição, Yuji Orihashi, Gustavo W. Bertotto, Shun’ichi Nakai, Manuel Schilling,
O manto litosférico subcontinental (MLSC) do terreno Cuyania está representado em xenólitos peridotíticos e piroxeníticos anidros da fácies espinélio ... padrão empobrecido em elementos incompatíveis em relação ao Manto Primitivo (MP). Com base em cálculos de fusão ... fusão de 1 a 10% a partir do Manto do tipo MORB Depletado e de 8 a 17% a partir do Manto Primitivo. Curvas de mistura calculadas para o resíduo ... derivados de ambientes de subducção indicam interação do manto com até 3% de fluidos/sedimentos. As razões ...
Tópico(s): Geochemistry and Elemental Analysis
2010 - | Pesquisas em Geociências
Fernando Barra, Martín Reich, David Selby, Paula Rojas, Adam C. Simon, Eduardo Salazar, Gisella Palma,
... the stratabound Cu(-Ag) deposits, also known as Manto-type Cu(-Ag) deposits. IOCGs and Manto-type deposits constitute the second source of copper ... Los Colorados, El Romeral, and Carmen, and two Manto-type deposits: Altamira and Franke. Calculated Re-Os ... Cretaceous age. The calculated ages for the Altamira Manto-type Cu deposit yield a ~ 90 Ma age, indicating that the Cretaceous Manto-type Cu belt of central Chile extends further ... 4) than IOAs (1.0–1.2) and Manto-type Cu deposits (~ 1.1). A comparison with ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2016 - Elsevier BV | Ore Geology Reviews
Ricardo Oyarzún, Lorena Ortega Menor, J. Sierra, Rosario Lunar Hernández, J. Oyarzún,
... in Chile exhibits a series of mineralizations comprising manto-type manganese and copper deposits of Lower Cretaceous ... the second one (Mn2) gave rise to major manto-type deposits of both manganese and copper in ... districts. The latter veins cross-cut the previous manto-type copper deposits. Ore mineralogy is similar in both styles of mineralization (manto- and vein-type) and consists mainly of chalcopyrite ... two categories, those related to the Lower Cretaceous manto-type episode (LK alteration: chlorite-epidote-calcite-albite, ...
Tópico(s): Geochemistry and Geologic Mapping
1998 - Springer Science+Business Media | Mineralium Deposita
Mehdi Movahednia, Sajjad Maghfouri, Negin Fazli, Ebrahim Rastad, Majid Ghaderi, Javier González,
Stratabound or "Manto-type/volcanic red-bed" Cu-(Ag) deposits occur along the Urumieh-Dokhtar magmatic arc (UDMA), Sanandaj-Sirjan Zone ( ... basins are the principal tectonic setting for the Manto-type deposits of Iran, that developed during the ... hosted stratabound copper districts around the world. Iranian Manto-type deposits are stratigraphically controlled in which Cu-( ... mineralogy of the Cu-(Ag) mineralization in all Manto-type deposits of Iran is simple and consists ... diagenetic pyrite, which in turn, replaced pyrobitumen. Iranian Manto-type deposits are interpreted to be the result ...
Tópico(s): earthquake and tectonic studies
2022 - Elsevier BV | Ore Geology Reviews
A. K. Temple, Robert Mann Grogan,
... yr. Much of this production was obtained from manto-type deposits and although the relative importance of ... a considerable reserve of fluorspar. The most extensive manto deposits in northern Coahuila, in the Buenavista-Encantada ... overlying Del Rio shale and Buda Limestone. Individual mantos are long and narrow in plan and range ... in length and 100 ft in width. The mantos are commonly joined to give an over-all ... in the limestone below. In cross section, the mantos are trough- or saucer-shaped, with the ore ...
Tópico(s): Geological and Geophysical Studies Worldwide
1963 - | Economic Geology
Economically important manto fluorite deposits in northern Coahuila, Mexico, are found at the contact between uppermost Lower Cretaceous Georgetown limestone and ... in these deposits. Wall-rock alteration around the mantos involved fluoritization and locally intense silicification and formed ... foot wide. Primary inclusions in fluorite from these mantos contain liquid + vapor + or - petroleum material + or - an ... of +0.8 per mil, whereas sulfate from manto celestite has sulfur as heavy as + 13.2 ... data in their geologic context suggests that the manto deposits formed when a zone of formation water ...
Tópico(s): Groundwater and Isotope Geochemistry
1977 - | Economic Geology
Erich U. Petersen, Ulrich Petersen, Claudia Hackbarth,
... variations of tetrahedrite in the Santiago Norte-Split, Manto, and Calera veins were studied in sufficient detail ... within the near-vertical vein structure.In the Manto vein there are three major ore shoots 300 ... tetrahedrite composition within the Santiago Norte-Split and Manto veins are highlighted by X Ag isopleths of ... the top of the ore band. For the Manto vein the X Ag isopleths demonstrate that the ... descends steeply, tightly doubling upon itself. Thus, the Manto ore band is 25 to 125 m wide ... Major vertical ore shoots like those of the Manto vein would form in areas of enhanced permeability. ...
Tópico(s): earthquake and tectonic studies
1990 - | Economic Geology
Antoni Camprubí, Eduardo Gonzáléz-Partida, Margarita López‐Martínez, Alexander Iriondo, María Pura Alfonso Abella, Edith Cienfuegos-Alvarado, Eric Gutiérrez-Armendáriz, Pedro Morales‐Puente, Carles Canet, Luis E. González-Ruiz,
... consists of (1) early iron oxide–copper–gold mantos accompanied by potassic (fuchsite, biotite and potassium feldspar) ... late gold- and copper-rich quartz-calcite veins. Mantos contain most of the copper and gold ores ... in the Guaynopita porphyry copper deposits. In IOCG mantos, temperatures of homogenization (Th) in calcite and quartz ... range between − 15.1 and 7.0‰ in mantos, between − 3.7 and − 0.2‰ in veins, ... in stockworks. δ13CVPDB values from calcite in IOCG mantos range between − 5.22 and 3.45‰, and ... hydrothermal activity: biotite and chromian muscovite (fuchsite) from mantos at the Guaynopa IOCG deposits yielded 40Ar/39Ar ...
Tópico(s): Hydrocarbon exploration and reservoir analysis
2016 - Elsevier BV | Ore Geology Reviews
... are exposed - gently dipping silicate-sulfide sheets or mantos, and steeply plunging chimneys of sulfide ore with ... along steep NE or NW faults. The main manto consists of a central zone with wollastonite, grossularite, ... The silicates and sulfides were introduced into the manto by a single fluid that did not change ... order of 500 degrees -550 degrees C. The mantos were cut by silicate-bearing chimneys of sulfide ... are virtually identical to the changes in the mantos produced by the progressive reaction of the fluid ...
Tópico(s): Geological and Geophysical Studies Worldwide
1959 - | Economic Geology
Skarns, mantos, and breccia pipes occur at Cananea in a 2- by 4-km horst of Paleozoic carbonate rock ... of previously unaltered carbonate rocks by stratiform blankets (mantos) of iron oxides and sulfides resulted in some of the highest grade orebodies. Breccia pipe and manto formation appears to have been largely contemporaneous with ... chlorite, siderite, calcite, quartz, and serpentine form massive mantos. Veinlets of chlorite and magnetite + or - pyrite + or - ...
Tópico(s): Geological formations and processes
1982 - | Economic Geology
Mónica Vásquez, Uwe Altenberger,
... elementos traza normalizados con respecto a condrita y manto primordial muestran una fuente del manto ligeramente enriquecida al occidente y una altamente enriquecida ... Es probable que el metasomatismo sufrido por el manto directamente en la fuente del magma, sea el ... muy bajos en el oriente. El metasomatismo del manto y la fusión que generó las rocas máficas, ... no han sido afectados por una pluma del manto. Proponemos un modelo de extensión (rift-related) en ...
Tópico(s): earthquake and tectonic studies
2005 - Elsevier BV | Journal of South American Earth Sciences
Ernesto Bjerg, Theodoros Ntaflos, G. Kurat, G. Dobosi, C. H. Labudia,
... de Patagonia. Un conjunto representativo de xenolitos del manto fueron recolectados en la región comprendida entre las ... los hallados en otras partes del mundo. El manto litósferico que la subyace ha experimentado solo extracciones ... lo indican los diagramas de variación química. El manto litosférico de esta región ha sido afectado en ... y críptico. Las evidencias texturales indican que el manto esta tectonizado y recristalzado en grados que varían ... resultado de la presencia de pluma(s) de manto ascendente(s), en un ambiente tectónico extensional.
Tópico(s): earthquake and tectonic studies
2005 - Elsevier BV | Journal of South American Earth Sciences
Thomas Schmitt, Jan Christian Habel, Dennis Rödder, Dirk Louy,
... individuals (36 populations) of the mountain butterfly Erebia manto and perform Species Distribution Models ( SDM s). As ... almost as strong as the split between E. manto and its sister species Erebia eriphyle . The distinctiveness ... temperatures will strongly impact the distribution of E. manto . While the populations in the Alps are predicted ... warming will therefore be unlikely to threaten E. manto as a species, an important proportion of the ...
Tópico(s): Genetic diversity and population structure
2014 - Wiley | Global Change Biology
Ping Shen, Hongdi Pan, Zhitao Li, Jinheng Sun, Yuanchao Shen, Changhao Li, Haoxuan Feng, Cong Cao,
Manto-type Cu deposits with relatively high grade (up to >8 wt% Cu) occurred widely around the ... along the Himalayan–Tibetan Belt. However, so far, Manto-type Cu deposits have not been reported in ... West Junggar, Xinjiang, China, is the first recognized Manto-type Cu deposit. It is hosted in the ... the Hongguleleng deposit is classified as a typical Manto-type copper deposit.
Tópico(s): High-pressure geophysics and materials
2020 - Elsevier BV | Ore Geology Reviews
Don L. Anderson, C. G. Sammis,
... con los limites abruptos de esta región del manto superior y también es consistente con los valores ... mecánica de una capa fundida parcialmente en el manto superior es probablemente una fuente importante de energía ... pueden deslizarse la corteza y la cima del manto con muy poca fricción. El movimiento de alejamiento lateral de la corteza y del manto superior con respecto a los altos oceánicos se ...
Tópico(s): Geological and Tectonic Studies in Latin America
1969 - National Autonomous University of Mexico | Geofísica Internacional
... tuffs and limestones. Layered sulfide-amphibolite ore horizons (mantos) occur intercalated in Units II, III, and V, ... 14 ppm.Temperature of ore deposition in the manto of Unit II, based on fluid inclusion filling ... of Fe- and Cu-chloride complexes, suggest that manto ores in Units II and III formed at ... H 2 S) ratio from 0 to +2. Manto mineralization in Unit V occurred from fluids with ...
Tópico(s): Geochemistry and Geologic Mapping
1977 - | Economic Geology
... in all skarn zones and in carbonate replacement mantos and chimneys beyond skarn. Distal mineralogical zones (e.g., pyroxenoid and manto) are more extensive to the southwest. In general, ... dike to the limit of alteration (carbonate replacement mantos and chimneys). The calculated average thermal gradient along ... of this zinc skarn hierarchy is transitional to manto and chimney carbonate replacement deposits which contain few, ...
Tópico(s): Geochemistry and Geologic Mapping
1987 - | Economic Geology