 | Santos, João Orestes Schneider, Hartmann, Léo Afraneo, Gaudette, Henri Eugene, Groves, David Ian, Mcnaughton, Neal Jesse, Fletcher, Ian Robert (2000) A New Understanding of the Provinces of the Amazon Craton Based on Integration of Field Mapping and U-Pb and Sm-Nd Geochronology. Gondwana Research, 3 (4) 453-488 doi:10.1016/s1342-937x(05)70755-3 | Journal (article/letter/editorial) | | conventional and sensitive high-resolution ion microprobe zircon U-Pb dating has led to a new understanding of the...recycling of continental crust (Central Amazon, Rio Negro and Sunsas). The exposed Archean crust is restricted...new crust added as orogenic belts, while the Rio Negro (1.86-1.52 Ga) and Sunsas (1.33-0.99 Ga) Provinces...rocks of at least three different provinces (Rio Negro, Tapaj6S-Parima and Transamazonic). The Central...much younger than Archean-Paleoproterozoic (Rio Negro and RondbniaJuruena blocks, for example), and that |  | | Journal (article/letter/editorial) | | microcontinental cells. Their stratigraphic position and zircon-bearing clasts dated at 2.15 Ga in some of the...(north of the Amazonas River) and the Xingu block (to the south, in the Xingu River, see Figs. 1, 3 and...intrusives on the easternmost margin of the Rio Negro-Juruena Belt. Accentuated dips in some areas developed...occurs along a NNW-SSE trend, parallel to the Rio Negro-Juruena accretionary system and may have been deposited...areas (Salvador, Rio Pardo) to the interior of Bolivia (Fig. 5, Fig. 6). It includes mafic-ultramafic |  | Merschel, Gila, Bau, Michael, Schmidt, Katja, Münker, Carsten, Dantas, Elton L. (2017) Hafnium and neodymium isotopes and REY distribution in the truly dissolved, nanoparticulate/colloidal and suspended loads of rivers in the Amazon Basin, Brazil. Geochimica et Cosmochimica Acta, 213. 383-399 doi:10.1016/j.gca.2017.07.006 | Journal (article/letter/editorial) | | 2017 Abstract Radiogenic isotopes in river sediments and river waters have been widely used in provenance...draining the Andes, and of the Rio Negro, an organic NPC- and particle-rich river draining the rainforest of...and 0.2 lm-filtered water samples from the Amazon River and its tributaries Rio Tapajos, Rio Xingu and Rio...the truly dissolved load of rivers. In the Rio Negro and Rio Solimões, a strong particle size-dependent...contrast, the Nd isotope composition of Amazonian river waters reflects that of their catchment geology. |  | | Journal (article/letter/editorial) | | exposedin an area boundedby the Orinoco River on the north, the Negro River on the west, the Amazon Valley on...goethite. Accessoryminerals includepyroxene,apatite,zircon and garnet. In one sample(No. 20), strong micro-foldingwas...containinginclusionsof quartz, biotite and magnetite. Zircon is common. This biotite-garnetgneissis consideredto...hornblendeoccurs. Accessorymineralsinclude sphene,zircon and apatite and magnetiteis usuallypresent. Charnokite |  | Mendes, Túlio A. A., de Mesquita, Raissa B., Knauer, Luiz G., Almeida, Marcelo E., Roncato, Jorge (2021) Spatiotemporal constraints on the western Cauaburi Belt tectonics – northwestern Amazon Craton, Brazil. International Geology Review, 63 (11) 1342-1365 doi:10.1080/00206814.2020.1768441 | Journal (article/letter/editorial) | | radiometric dating of granitoids is to assign concordant zircon dates or regres sion line in discordant data as...techniques reveal concordant age dispersion for zircon grains obtained from cordilleran granitoids (e...episodic pulses imply on the multi-stage growth of zircon. Miller et al. (2007) coined a terminology to differ...The authors use the term ‘antecrysts’ to refer to zircon grains that crystallized from earlier pulses; ‘autocrysts’...the crystallization, transport, and storage of zircon grains in magmatic systems that can remain active |  | Mora, Abrahan, Moreau, Cristina, Moquet, Jean-Sébastien, Gallay, Marjorie, Mahlknecht, Jürgen, Laraque, Alain (2020) Hydrological control, fractionation, and fluxes of dissolved rare earth elements in the lower Orinoco River, Venezuela. Applied Geochemistry, 112. 104462 doi:10.1016/j.apgeochem.2019.104462 | Journal (article/letter/editorial) | | dissolved rare earth elements in the lower Orinoco River, Venezuela Abrahan Mora a, *, Cristina Moreau a...elements (REEs) was assessed in the lower Orinoco River during a two year period (2007–2008) to determine...fluxes of dissolved REEs from the lower Orinoco River to the Orinoco estuary display strong inter-annual...oceans. Keywords: Rare earth elements Orinoco River Hydrological variation Atlantic ocean Nd fluxes...REEs in the dissolved and suspended material of river water provide insights into both their seawater |  | Dosseto, A., Bourdon, B., Gaillardet, J., Allègre, C.J., Filizola, N. (2006) Time scale and conditions of weathering under tropical climate: Study of the Amazon basin with U-series. Geochimica et Cosmochimica Acta, 70 (1) 71-89 doi:10.1016/j.gca.2005.06.033 | Journal (article/letter/editorial) | | 2005 Abstract The Rio Solimões/Amazonas (Amazon River) and its major tributaries have been analyzed for...riverine material to estimate, at the scale of the river basin, continental erosion rates (e.g., Gaillardet...products exported by the river. Using major and trace element compositions of river dissolved and suspended...isotopes during weathering and transport in the river (e.g., Andersson et al., 1998; Plater et al., 1992;...of 600 · 106 t/an (Filizola, 1999), the Amazon River represents the largest water discharge and the third |  | Balan, Etienne, Allard, Thierry, Fritsch, Emmanuel, Sélo, Madeleine, Falguères, Christophe, Chabaux, François, Pierret, Marie-Claire, Calas, Georges (2005) Formation and evolution of lateritic profiles in the middle Amazon basin: Insights from radiation-induced defects in kaolinite. Geochimica et Cosmochimica Acta, 69 (9) 2193-2204 doi:10.1016/j.gca.2004.10.028 | Journal (article/letter/editorial) | | is incorporated in resistant minerals, such as zircon and Ti oxides. The heterogeneous distribution of...also includes hematite, goethite, Ti oxides, and zircon. Petrological studies have shown that the sediments...located downstream on the right bank of the Rio Negro river, 3 km east of the city of Manaus (Fig. 1). The...con- centration in concentrated phases (e.g., zircon grains) and in the U-poor clay matrix, respectively...Note that U is mainly concentrated in grains of zircon (bottom right) or titanium oxide, which appear |  | | Book | | studied along walking trails, on horseback, in river boats, and light planes, under conditions spanning...Grande S, Valencia V (2013) Petrography and U-Pb Zircon Geochronology of Geological Units of the Mesa de...Viscarret P, Wright J, Urbani F (2009) New U-Pb zircon ages of El Baúl Massif, Cojedes State, Venezuela...Radargramétrico del Amazonas Rare earth elements Rio Negro-Juruena (geological province) Sensitive high-resolution...overall is of pelitic-psamitic protolith. U-Pb zircon ages, Rb-Sr ages, and Ar-Ar ages indicate that |  | | Journal (article/letter/editorial) | | with time by weathering of accessory phases, Wind River Mountains, WY . . . . . . . . . . . . . . . . .... PRINCIVALLE , M. BRUNO , M. PRENCIPE , A. DAL NEGRO: Effects of non-stoichiometry on the spinel structure...microprobe totals in radiation-damaged and altered zircon . . . . . . . . . . . . . . . . . . . . . . . ...translocation of ferric iron in podzols of the Negro River watershed. Separation of secondary Fe species...KALLESON , F. CORFU , H. DYPVIK : U–Pb systematics of zircon and titanite from the Gardnos impact structure |  | Akerman, Alisson, Poitrasson, Franck, Oliva, Priscia, Audry, Stéphane, Prunier, Jonathan, Braun, Jean-Jacques (2014) The isotopic fingerprint of Fe cycling in an equatorial soil–plant–water system: The Nsimi watershed, South Cameroon. Chemical Geology, 385. 104-116 doi:10.1016/j.chemgeo.2014.07.003 | Journal (article/letter/editorial) | | represents a specific interface between terrestrial and river systems (Oliva et al., 1999). The mobilization,...by the Mengong stream, a tributary of the Nyong River system. The current regional climate is equatorial...concentrations are much higher than that of the Nyong river basin colorless water (i.e., groundwater and spring;...sandy horizons. In the swamp zone soils, kaolinite, zircon and others residual phases (e.g., rutile, ilmenite...Fantle and DePaolo, 2004). In the case of the North River (Massachusetts), Escoube et al. (2009) uncovered |  | | Book (volume) | | language Naab River (Germany) (Not Subd Geog) UF Nab River (Germany) BT Rivers—Germany Naab River Valley (Germany)...Valleys—Germany Naab Valley (Germany) USE Naab River Valley (Germany) Na’ami sheep USE Awassi sheep Na‘ar...Gnosticism Naatas USE Navayats Nab River (Germany) USE Naab River (Germany) Naba, Jabal (Jordan) USE...spaces USE Hewitt-Nachbin spaces Naches River (Wash.) UF Natchez River (Wash.) BT Rivers—Washington (State)...(Character) UF Nachiketas Nacimento River (Calif.) USE Nacimiento River (Calif.) Nacimiento Mountains (N |  | | Journal (issue) | | Insoluble Minerals: What is the Secret? The Example of Zircon (ZrSiO4) . . . . . . . . . . . . 656... . . . . . 656 16.2.2 Surface chemistry of zircon in soils and sediments . . . . . . . 656... . 658 16.2.4 Influence of radiation-damage on zircon dissolution . . . . . . 660 17. Aluminum...weathering mechanisms of silicate minerals and zircon, (3) the interaction of aluminum with diatom surfaces...components or the speciation of Fe and Al in the Rio Negro and its tributaries. We co-advised graduate student |  | Martiny, Barbara M., Morán-Zenteno, Dante J., Tolson, Gustavo, Silva-Romo, Gilberto, López-Martínez, Margarita (2012) The Salado River fault: reactivation of an Early Jurassic fault in a transfer zone during Laramide deformation in southern Mexico. International Geology Review, 54 (2) 144-164 doi:10.1080/00206814.2010.510014 | Journal (article/letter/editorial) | | http://www.tandfonline.com/loi/tigr20 The Salado River fault: reactivation of an Early Jurassic fault in...Silva-Romo & Margarita LópezMartínez (2012) The Salado River fault: reactivation of an Early Jurassic fault in...Vol. 54, No. 2, January 2012, 144–164 The Salado River fault: reactivation of an Early Jurassic fault in...December 2014 (Accepted 6 July 2010) The Salado River fault (SRF) is a prominent structure in southern...issues are still unresolved. The WNW-striking Salado River fault (SRF), located in southern Mexico, displays |  | Yesavage, Tiffany, Fantle, Matthew S., Vervoort, Jeffrey, Mathur, Ryan, Jin, Lixin, Liermann, Laura J., Brantley, Susan L. (2012) Fe cycling in the Shale Hills Critical Zone Observatory, Pennsylvania: An analysis of biogeochemical weathering and Fe isotope fractionation. Geochimica et Cosmochimica Acta, 99. 18-38 doi:10.1016/j.gca.2012.09.029 | Journal (article/letter/editorial) | | Present in the high-density, insoluble mineral zircon in Rose Hill shale, Zr has been previously shown...relative to continental rocks, though more complicated river systematics have been invoked (Fantle and DePaolo...dissolved Fe relative to particulate Fe in the Negro River of the Amazon System. At the moment, the role...heavier than particulate Fe (>0.22 lm) in the North River of Massachusetts by 0.5&. Just as we hypothesize...uptake by continental weathering and alkalinity river transport to the oceans. Global Biogeochem. Cycles |  | | Book | | com datações multimétodos. (C): e sudoeste (Rio Negro-Jururena, 2.100modelo de Santos (2003a), precursor...2D): 3. Ventuari-Tapajós, de 2,00-1,81 Ga; 4. Rio Negro-Juruena, de 1,78-1,55 Ga; 1. Transamazonas (2,26-2...Rio Negro (1,82-1,52 Ga), contemporânea à Rondônia-Juruena, com as subprovíncias Imeri e Rio Negro; 8...Província Ventuari-Tapajós, bem como a Província Rio Negro-Juruena, representariam crosta continental juvenil...parte sul das províncias Ventuari-Tapajós e Rio Negro-Juruena, que podem ser vistas na Figura 2. O setor |  | | Journal (issue) | | YGONITE COLUMBITE RUTILE ILMENITE AND BERYL ZIRCON OTHER MINERALS • , BUYERS OF MINERALS ORES...Caribbean Geological Conference faci1ig p. 44 Panning River Silt for Alluvial Deposits, Federation of Malaya...Nyasaland some 50 miles to the east of the Shire River, about midway between the southern end of Lake Nyasa...000 feet in less than a mile to join the Likabula River below. The physical features are well illustrated...by the relatively small nick cut into it by the river draining the whole plateau area. It is suggested |  | | Book (volume) | | USE Saadi family Saalach River (Austria and Germany) UF Selach River (Austria and Germany) BT Rivers...Saale River (Germany) UF Sachsische Saale River (Germany) Saxonian Saale River (Germany) Zaale River (Germany)...(Germany) BT Rivers Germany — Saale River Valley (Germany) UF Saale Valley (Germany) BT —Germany Watersheds...Valleys Saale River Watershed (Germany) BT Saale Valley (Germany) USE Saale River Valley (Germany)... USE (Germany) (Germany) Saalum River (Senegal) USE Saloum River (Senegal) Saam (European people) USE |  | | Book (edition) | | Geoloof Pe- Aar Massif BT Switzerland Aar Valley River valley in central and N Switzerland. Also search...Quebec and E Ontario. CO Abakan Town on Yenisei River SW of Krasnoyarsk in Khakass Autonomous Oblast....W0735000W0850000 Superior Province Canadian Shield Blake River Group Ontario Quebec Abkhasia use Abkhazia closed...in E central. Kansas United States Adour Basin River basin in extreme SW Also search Adour. BT France...Central Africa NT Chad Basin NT Congo Basin NT Congo River NA East Africa NT East African Lakes NT East |  | | Report (issue) | | ————————————————Afghanistan-Iran-Turkey ———————————Bolivia —————————————————————Brazil _——————————————————————Djibouti...gold placer deposits at the south end of the Wind River Range have been known Closely spaced growth faults...time. During the Laramide Revolution, the Wind River Range was uparched and eroded to its Precambrian...Rolla) found that anomalous heavy-metal contents of river waters, stream sediments, and selected aquatic plants...sediments with which they are associated. In the Iron River I°x2° quadrangle, Michigan and Wisconsin, H. V. |  | | Book | | Alpine foothills, the sub-Alpine hills, and the Po River plain, respectively. The term ‘Quaternary’ apparently...Lick. The site lies on a tributary of the Ohio River, about 30 km southwest of Cincinnati Ohio. It was...million sq. km of land extending from the Mississippi River to the Rocky Mountains. When President Thomas Jefferson...feldspars but also produce volcanic glass and small zircon and apatite grains. These materials 21 are suitable...been limited to the use of zircon and apatite grains and volcanic glass. Zircon is the mineral of choice |  | | Journal (volume) | | Geological Con ference · facing p . Plate II Panning River Silt for Alluvial Deposits, Federation of Malaya...to Borneo facing p. Plate II Headwaters of the River Bunut, Eastern Sarawak Plate III Columnar Jointing...Salavo . 2. Albite - epidote -amphibolite, Loghoto River Point, 286 298 304 272 ILLUSTRATIONS Plate II...Text-fig. 3 3. Albite - epidote -amphibolite, Loghoto River Point. 4. Albite - epidote- amphibolite with diorite...Jorge Rocks facing p. 1. Serpentinised harzburgite, River section, Eastern San Jorge. 2. Serpentinised harzburgite |  | | Book (edition) | | associations Aar Massif BT Switzerland Aar Valley River valley in central and N Swit¬ zerland. UF Aare Valley...Switzerland. BT Switzerland Abakan Town on Yenisei River SW of Kras¬ noyarsk in Khakass Autonomous Oblast...BT Superior Province BT Canadian Shield SA Blake River Group SA Ontario SA Quebec SA Sigma Mine SA Timiskaming...Peninsula S of Cape Horn. BT Antarctica Adour Basin River basin in extreme SW France. Also search Adour. BT...Kasai River NT Lake Chad NT Lebombo Mountains NT Libyan Desert NT Limpopo Basin NT Logone River NZ Malagasy |  | | Report (volume) | | 28F0.57 .................96 Reequilibration of zircon (ZrSiO4) in aqueous luids .......................example. Reequilibration of zircon (ZrSiO4) in aqueous luids Although ideal zircon is stable under crustal...unlikely due to the slow diffusion of cations in zircon at crustal conditions (Cherniak and Watson 2003)...shows a typical example, in which the pristine zircon has a lighter back-scattered contrast and contains...substituted elements compared to the porous altered zircon (darker contrast) which contains inclusions of |  | | Book | | ............. 87 In the Basin of the Upper Rio Negro .......... .... .......... .. ... ... 88 Transformation...marked dry season, excluding travertine or spring-, river- and water table cementations of various origins...accumulation of residual minerals (anatase and zircon) shown by higher TiO2 and Zr contents in this layer...middle Amazonia located on both sides of the Amazon river and developed at the expense of quartz-kaolinite...the Upper Rio Negro According to studies carried out in the basin of the Upper Rio Negro (Dubroeucq and |
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