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Abstract:

A new paleomagnetic study was carried out on 15 sites of the Sierra de las Ánimas complex, exposed in SE Uruguay. A paleomagnetic remanence was isolated at six sites, and this direction is likely to be pre-tectonic and primary. Mean directions from five of these sites are consistent with the SA2 paleomagnetic pole, which is based on a previous paleomagnetic study of the complex. A new paleomagnetic pole was computed for compiled results from the Sierra de las Ánimas complex (SAn, 12.2°. S, 258.9°. E, A95: 14.9°). A geochronological study based on U/Pb (SHRIMP) dating of magmatic zircons was also carried out on three samples of the Sierra de las Animas Complex, yielding a grand mean age of 578 ± 4. Ma. The new SAn paleomagnetic pole anchors the Early Ediacaran segment of the Apparent Polar Wander Path for the Río de la Plata craton. Consistency of the new pole with other Ediacaran poles from the Congo-São Francisco craton suggests a coherent Central Gondwana by this time. These data also support a wide Clymene Ocean between the conjoined Río de la Plata-Congo-São Francisco blocks and Western Gondwana, i.e., Amazonia-West Africa. Additional sampling (sixteen samples) was carried out on the basal levels of the glaciogenic Playa Hermosa Formation, exposed in the same area. These samples retain a paleomagnetic component consistent with the previously reported data, confirming the original pole position. U-Pb (SHRIMP) dating of detrital zircons reveal a bimodal distribution of Paleoproterozoic (around 2.1. Ga) and late Neoproterozoic ages. The youngest zircons are interpreted as pre-dating to penecontemporaneous with deposition and points to a ≤594. Ma age for deposition of the older levels of the Playa Hermosa Formation. A minimum age of deposition is set by the 578 ± 4. Ma age of the Sierra de las Ánimas magmatism. The low inclination of magnetization indicates that low-latitude (13.0°. +. 9.5°/-5.5°), Gaskiers-aged glacial deposits are preserved atop the Rio de la Plata craton. © 2014 Elsevier B.V.

Registro:

Documento: Artículo
Título:The late Neoproterozoic Sierra de las Ánimas Magmatic Complex and Playa Hermosa Formation, southern Uruguay, revisited: Paleogeographic implications of new paleomagnetic and precise geochronologic data
Autor:Rapalini, A.E.; Tohver, E.; Bettucci, L.S.; Lossada, A.C.; Barcelona, H.; Pérez, C.
Filiación:Laboratorio de Paleomagnetismo Daniel A. Valencio, Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (IGEBA), Departamento de Cs. Geologicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
University of Western Australia, Australia
Laboratorio de Geofísica y Geotectónica, Departamento de Geología, Facultad de Ciencias, Universidad de la República, Uruguay
IANIGLA (Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales), CCT-Mendoza, CONICET, Argentina
Instituto de Geocronología y Geología Isotópica (INGEIS), UBA-CONICET, Buenos Aires, Argentina
Palabras clave:Gondwana; Paleomagnetism; Río de la Plata craton; South America; Uruguay; apparent polar wander path; craton; geochronology; Gondwana; magmatism; paleogeography; paleomagnetism; Proterozoic; remanent magnetization; Amazonia; Brazil; Congo Craton; Rio de la Plata; Sao Francisco Craton; Uruguay
Año:2015
Volumen:259
Página de inicio:143
Página de fin:155
DOI: http://dx.doi.org/10.1016/j.precamres.2014.11.021
Título revista:Precambrian Research
Título revista abreviado:Precambrian Res.
ISSN:03019268
CODEN:PCBRB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03019268_v259_n_p143_Rapalini

Referencias:

  • Abrajevitch, A., Van der Voo, R., Incompatible Ediacaran paleomagnetic directions suggest an equatorial geomagnetic dipole hypothesis (2010) Earth Planet. Sci. Lett., 293, pp. 164-170
  • Besse, J., Courtillot, V., Apparent and true polar wander and the geometry of the geomagnetic field over the last 200Myr (2002) J. Geophys. Res., p. 107
  • Bossi, J., Cingolani, C.A., Extension and general evolution of the Río de la Plata Craton (2009) Developments in Precambrian Geology, 16, pp. 73-85. , C. Gaucher, A.N. Sial, G.P. Halverson, H.E. Frimmel (Eds.) Neoproterozoic-Cambrian Tectonics, Global Change and Evolution: A Focus on Southwestern Gondwana
  • Campos Neto, M.C., Orogenic systems from Southwestern Gondwana: an approach to Brasiliano-Pan African Cycle and orogenic collage in South Eastern Brasil (2000) Tectonic Evolution of South America, 31st International Geological Congress, pp. 335-365. , U.G. Cordani, E.J. Milani, A. Thomaz Filho, D.A. Campos (Eds.)
  • Cawood, P.A., McCausland, P.J.A., Dunning, G.R., Opening Iapetus: constraints from the Laurentian margin in Newfoundland (2001) Geol. Soc. Am. Bull., 113, pp. 443-453
  • Cawood, P.A., Pisarevsky, S., Was Baltica right-way-up or upside-down in the Neoproterozoic? (2006) J. Geol. Soc. Lond., 163, pp. 1-7
  • Cifelli, F., Mattei, M., Chadima, M., Hirt, A.M., Hansen, A., The origin of tectonic lineation in extensional basins: combined neutron texture and magnetic analyses on undeformed clays (2005) Earth Planet. Sci. Lett., 235, pp. 62-78
  • Cingolani, C.A., Dalla Salda, L.H., Buenos Aires cratonic region (2000) Tectonic Evolution of South America, 31st International Geological Congress, pp. 139-146. , U.G. Cordani, L.J. Milani, A. Thomaz Filho, D. Campos (Eds.)
  • Collins, A.S., Pisarevsky, S.A., Amalgamating eastern Gondwana: the evolution of the circum-Indian orogens (2005) Earth-Sci. Rev., 71, pp. 229-270
  • Cordani, U.G., Sato, K., Teixeira, W., Tassinari, C., Basei, M., Crustal evolution of the South American platform (2000) Tectonic Evolution of South America, 31st International Geological Congress, pp. 19-40. , U.G. Cordani, L.J. Milani, A. Thomaz Filho, D. Campos (Eds.)
  • Cordani, U.G., Pimentel, M.M., Ganade de Araujo, C.E., Basei, M.A.S., Fuck, R.A., Girardi, V.A.V., Was there an Ediacaran Clymene Ocean in central South America? (2013) Am. J. Sci., 313, pp. 517-539
  • D'Agrella-Filho, M.S.F., Pacca, I.G., Paleomagnetism of the Itajai, Castro and Bon Jardim Groups from southern Brazil (1988) Geophys. J., 93, pp. 365-376
  • Dalla Salda, L.H., Bossi, J., Cingolani, C.A., The Rio de la Plata cratonic region of Southwestern Gondwanaland (1988) Episodes, 11, pp. 263-269
  • Dankers, P., Lapointe, P., Paleomagnetism of Lower Cambrian volcanics and a cross-cutting Cambro-Ordovician diabase dyke from Buckingham (Quebec) (1981) Can. J. Earth Sci., 18, pp. 174-186
  • Elming, S.A., Kravchenko, S.N., Layer, P., Rusakov, O.M., Glevasskaya, A.M., Mikhailova, N.P., Bachtadse, V., Palaeomagnetism and 40Ar/39Ar age determinations of the Ediacaran traps from the southwestern margin of the East European Craton, Ukraine: relevance to the Rodinia break-up (2007) J. Geol. Soc. Lond., 64, pp. 969-982
  • Enkin, R.J., The direction-correction tilt test: an all-purpose tilt/fold test for palaeomagnetic studies (2003) Earth Planet. Sci. Lett., 212, pp. 151-166
  • Evans, D.A.D., True polar wander and supercontinents (2003) Tectonophysics, 362, pp. 303-320
  • Fazzito, S.Y., Rapalini, A.E., Cortés, J.M., Terrizzano, C.M., Kinematic study in the area of the quaternary oblique-slip el Tigre Fault, western Precordillera, Argentina, on the basis of paleomagnetism and anisotropy of magnetic susceptibility (2011) Latinmag Lett., 1 (B24), pp. 1-5
  • Fisher, R.A., Dispersion on a sphere (1953) Proc. R. Soc. Lond. Ser. A, 217, pp. 295-305
  • Font, E., Ponte-Neto, C.F., Ernesto, M., Paleomagnetism and rock magnetism of the Neoproterozoic Itajaí Basin of the Río de la Plata craton (Brazil): Cambrian to Cretaceous widespread remagnetizations of South America (2011) Gondwana Res., 20, pp. 782-797
  • Gaucher, C., Frei, R., Chemale, F., Frei, D., Bossi, J., Martínez, G., Chiglino, L., Cernuschi, F., Mesoproterozoic evolution of the Río de la Plata Craton in Uruguay: at the heart of Rodinia? (2011) Int. J. Earth Sci., 100, pp. 273-288
  • Hodych, J.P., Cox, R.A., Kosler, J., An equatorial Laurentia at 550Ma confirmed by Grenvillian inherited zircons dated by LAM ICP-MS in the Skinner Cove volcanics of western Newfoundland: implications for inertial interchange true polar wander (2004) Precambrian Res., 129, pp. 93-113
  • Janikian, L., De Almeida, R.P., Trindade, R.I., Fragoso-Cesar, A.R.S., D'Agrella-Filho, M.S., Dantas, E.L., Tohver, E., The continental record of Ediacaran volcano-sedimentary successions in southern Brazil and their global implications (2008) Terra Nova, 20, pp. 259-266
  • Janikian, L., de Almeida, R.P., Fragoso-Cesar, A.R.S., Teixeira de Souza Martins, V., Dantas, E.L., Tohver, E., McReath, I., D'Agrella-Filho, M.S., Ages (U-Pb SHRIMP and LA ICPMS) and stratigraphic evolution of the Neoproterozoic volcano-sedimentary successions from the extensional Camaquã Basin, Southern Brazil (2012) Gondwana Res., 21, pp. 466-482
  • Jelinek, V., Statistical processing of magnetic susceptibility measured in groups of specimens (1978) Stud. Geophys. Geod., 22, pp. 50-62
  • Jelinek, V., Characterization of the magnetic fabric of rocks (1981) Tectonophysics, 79, pp. 63-67
  • Kempf, O., Kellerhalls, P., Lowrie, W., Matter, A., Paleomagnetic directions in Precambrian/Cambrian glaciomarine sediments of the Mirbat sandstone formation, Oman (2000) Earth Planet. Sci. Lett., 175, pp. 181-190
  • Kirschvink, J.L., The least-squares line and plane and the analysis of paleomagnetic data: examples from Siberia and Morocco (1980) Geophys. J. R. Astron. Soc., 62, pp. 699-718
  • Kirschvink, J.L., Higgins, M.D., Evans, D.A., Condon, D.J., Raub, T.D., Bowring, S.A., Nowlan, G.S., Farley, K.A., (2005) Ediacaran Rapid True Polar Wander: Constraints on a Possible Driving Mechanism from the Paleomagnetism and Geochronology of the Sept-Îles Intrusive Suite, Quebéc, Canada, EOS Transactions of AGU 86 (18) Joint Assembly Supplement, abstract GP21A-05
  • Kröner, A., Cordani, U., African, southern Indian and South American cratons were not part of the Rodinia supercontinent: evidence from field relationships and geochronology (2003) Tectonophysics, 375, pp. 325-352
  • Li, Z.X., Bogdanova, S.V., Collins, A.S., Davidson, A., De Waele, B., Ernst, R.E., Fitzsimons, I.C.W., Vernikovsky, V., Assembly, configuration, and break-up history of Rodinia: a synthesis (2008) Precambrian Res., 160, pp. 179-210
  • Ludwig, K.R., (2008) Isoplot 3.6. Berkeley Geochronology Center Special Publication, p. 77
  • Ludwig, K.R., (2009) Squid 2: A User's Manual, p. 100. , Berkeley Geochronology Center, Berkeley, California, USA
  • Masquelin, H., Sánchez Bettucci, L., Propuesta de evolución tectono-sedimentaria para la fosa tardi-brasiliana en la región de Piriápolis, Uruguay (1993) Rev. Bras. Geocienc., 23 (4), pp. 188-198
  • Mattei, M., Sagnotti, L., Faccenna, C., Funiciello, R., Magnetic fabric of weakly deformed clay-rich sediments in the Italian peninsula: relationship with compressional and extensional tectonics (1997) Tectonophysics, 271, pp. 107-122
  • McCausland, P.J.A., Hodych, J.P., Paleomagnetism of the 550Ma Skinner Cove volcanics of western Newfoundland and the opening of the Iapetus Ocean (1998) Earth Planet. Sci. Lett., 163 (1083), pp. 15-29
  • McCausland, P.J.A., Hankard, F., Van der Voo, R., Hall, C.M., Ediacaran paleogeography of Laurentia: paleomagnetism and 40Ar-39Ar geochronology of the 583Ma Baie des Moutons syenite, Quebec (2011) Precambrian Res., 187, pp. 58-78
  • McCausland, P.J.A., Van der Voo, R., Hall, C.M., Circum-Iapetus paleogeography of the Precambrian-Cambrian transition with a new paleomagnetic constraint from Laurentia (2007) Precambrian Res., 156, pp. 125-152
  • McElhinny, M.W., Statistical significance of the fold test in Palaeomagnetism (1964) Geophys. J. R. Astron. Soc., 8 (3), pp. 338-340
  • McFadden, P.L., McElhinny, M.W., The combined analysis of remagnetization circles and direct observations in paleomagnetism (1988) Earth Planet. Sci. Lett., 87, pp. 161-172
  • Meert, J.G., Growing Gondwana and rethinking Rodinia: a paleomagnetic perspective (2001) Gondwana Res., 4 (3), pp. 279-288
  • Meert, J.G., Torsvik, T.H., Powell, C.M., Li, Z.X., Chen, Z., Symons, D.T.A., A plate tectonic speed limit? (1993) Nature, 363, pp. 216-217
  • Meert, J.G., Torsvik, T.H., Payne, T., Paleomagnetism of the Catoctin volcanic province: a new Vendian-Cambrian apparent polar wander path for North America (1994) J. Geophys. Res., 99, pp. 4625-4641
  • Meert, J.G., Van der Voo, R., Paleomagnetic and 40Ar/39Ar study of the Sinyai dolerite, Kenya: implications for Gondwana assembly (1996) J. Geol., 104, pp. 131-142
  • Meert, J.G., Torsvik, T.H., Eide, E.A., Dahlgren, S., Tectonic significance of the Fen Province, S. Norway: constraints from geochronology and paleomagnetism (1998) J. Geol., 106, pp. 553-564
  • Meert, J.G., Walderhaug, H.J., Torsvik, T.H., Hendricks, B.W.H., Age and palaeomagnetic signature of the Alno Carbonatite complex (NE Sweden): additional controversy for the Neoproterozoic position of Baltica (2007) Precambrian Res., 154, pp. 159-174
  • Moloto-A-Kenguemba, G.R., Trindade, R.I.F., Monie, P., Nedelec, A., Siqueira, R., A late Neoproterozoic paleomagnético pole for the Congo craton: tectonic setting, paleomagnetism and geochronology of the Nola dike swarm (Central African Republic) (2008) Precambrian Res., 164, pp. 214-226
  • Morel, P., Palaeomagnetism of a Pan-African diorite: a Late Precambrian pole for western Africa (1981) Geophys. J. R. Astron. Soc., 65, pp. 493-503
  • Murphy, J., Pisarevsky, S., Nance, R., Potential geodynamic relationships between the development of peripheral orogens along the northern margin of Gondwana and the amalgamation of West Gondwana (2013) Mineral. Petrol., 107, pp. 635-650
  • Murthy, G., Gower, C., Tubrett, M., Patzold, R., Paleomagnetism of Eocambrian Long Range dykes and Double Mer Formation from Labrador, Canada (1992) Can. J. Earth Sci., 29, pp. 1224-2123
  • Oyhantçabal, P., Siegesmund, S., Wemmer, K., Frei, R., Layer, P., Post collisional transition from calc-alkaline to alkaline magmatism during transcurrent deformation in the southernmost Dom Feliciano Belt (Braziliano-Pan-African, Uruguay) (2007) Lithos, 98, pp. 141-159
  • Parés, J.M., van der Pluijm, B.A., Dinarès-Turell, J., Evolution of magnetic fabrics during incipient deformation of mudrocks (Pyrenees, northern Spain) (1999) Tectonophysics, 307, pp. 1-14
  • Pazos, P., Rapalini, A., Sánchez Bettucci, L., Tófalo, R., The Playa Hermosa Formation, Playa Verde Basin, Uruguay (2011) Geol. Soc. Lond. Mem., 36, pp. 547-553
  • Pisarevsky, S.A., Komissarova, R.A., Khramov, A.N., Reply to comment by J.G. Meert and R. Van der Voo on 'New paleomagnetic result from Vendian red sediments in Cisbaikalia and the problem of the relationship of Siberia and Laurentia in the Vendian' (2001) Geophys. J. Int., 146 (1132), pp. 871-873
  • Pisarevsky, S.A., Murphy, J.B., Cawood, P.A., Collins, A.S., Late Neoproterozoic and early Cambrian paleogeography: models and problems (2008) Geological Society of London Special Publication, 294, pp. 9-31. , R.J. Pankhurst, R.A. Truow, B.B. Brito Neves, M.J. de Wit (Eds.) West Gondwana: Pre-Cenozoic Correlations Across the South Atlantic Region
  • Rapalini, A.E., New Late Proterozoic paleomagnetic pole for the Rio de la Plata craton: implications for Gondwana (2006) Precambrian Res., 147, pp. 223-233
  • Rapalini, A.E., Sanchez Bettucci, L., Widespread remagnetization of Late Proterozoic sedimentary units of Uruguay and the apparent polar wander path for the Rio de la Plata craton (2008) Geophys. J. Int., 174, pp. 55-74
  • Rapalini, A.E., Trindade, R.I.F., Poiré, D.G., The La Tinta pole revisited: paleomagnetism of the Sierras Bayas Group (Argentina) and its implications for Gondwana and Rodinia (2013) Precambrian Res., 224, pp. 51-70
  • Rapela, C.W., Pankhurst, R.J., Casquet, C., Fanning, C.M., Baldo, E.G., Gonzalez-Casado, M., Galindo, C., Dahlquist, J., The Rio de la Plata craton and the assembly of SW Gondwana (2007) Earth Sci. Rev., 83, pp. 49-82
  • Rapela, C.W., Fanning, C.M., Casquet, C., Pankhurst, R.J., Spalletti, L., Poiré, D., Baldo, E.G., The Río de la Plata craton and the adjoining Pan-African/Brasiliano terranes: their origins and incorporation into south-west Gondwana (2011) Gondwana Res., 20, pp. 673-690
  • Reeves, C.V., de Wit, M.J., Sahu, B.K., Tight reassembly of Gondwana exposes Phanerozoic shears in Africa as global tectonic players (2004) Gondwana Res., 7, pp. 7-19
  • Sagnotti, L., Meloni, A., Pleistocene rotations and strain in southern Italy: the example of Sant'Arcangelo basin (1993) Ann. Geofis., 36, pp. 83-95
  • Sánchez Bettucci, L., Rapalini, A.E., Paleomagnetism of the Sierra de Las Ánimas complex, southern Uruguay: its implications in the assembly of western Gondwana (2002) Precambrian Res., 118, pp. 243-265
  • Soto, R., Larrasoaña, J.C., Arlegui, L.E., Beamud, E., Oliva-Urcia, B., Simó, J.L., Reliability of magnetic fabric of weakly deformed mudrocks as a palaeostress indicator in compressive settings (2009) J. Struct. Geol., 31, pp. 512-522
  • Symons, D.T.A., Chiasson, A.D., Paleomagnetism of the Callander Complex and the Cambrian apparent polar wander path for North America (1991) Can. J. Earth Sci., 28, pp. 355-363
  • Tanczyk, E.I., Lapointe, P., Morris, W.A., Schmidt, P.W., A paleomagnetic study of the layered mafic intrusion at Sept-Iles, Quebec (1987) Can. J. Earth Sci., 24, pp. 1431-1438
  • Tarling, D.H., Hrouda, F., (1993) The Magnetic Anisotropy of Rocks, p. 217. , Chapman and Hall, London
  • Tohver, E., D'Agrella-Filho, M.S., Trindade, R.I.F., Paleomagnetic record of Africa and South America for the 1200-500Ma interval, and evaluation of Rodinia and Gondwana assemblies (2006) Precambrian Res., 147, pp. 193-222
  • Tohver, E., Trindade, R.I.F., Solum, J.G., Hall, C.M., Riccomini, C., Nogueira, A.C., Closing the Clymene Ocean and bending a Brasiliano belt: evidence for the Cambrian formation of Gondwana from SE Amazon craton (2010) Geology, 38, pp. 267-270
  • Tohver, E., Cawood, P.A., Rossello, E.A., Jourdan, F., Closure of the Clymene Ocean and formation of West Gondwana in the Cambrian: evidence from the Sierras Australes of the southernmost Rio de la Plata craton, Argentina (2012) Gondwana Res., 21, pp. 394-405
  • Tohver, E., Trindade, R.I.F., Comment on "Was there an Ediacaran Clymene Ocean in central South America?" by U.G. Cordani and others (2014) Am. J. Sci., 314, pp. 805-813
  • Torsvik, T.H., Dietmar Muller, R., Van der Voo, R., Steinberger, B., Gaina, C., Global plate motions frame: toward a unified model (2008) Rev. Geophys., 46, pp. 1-44
  • Trindade, R.I.F., D'Agrella-Filho, M.S., Epof, I., Brito Neves, B.B., Paleomagnetism of early Cambrian Itabaiana mafic dikes (NE Brazil) and the final assembly of Gondwana (2006) Earth Planet. Sci. Lett., 244, pp. 361-377
  • Weil, A.B., Van der Voo, R., Mac Niocaill, C., Meert, J.G., The Proterozoic supercontinent Rodinia: paleomagnetically derived reconstructions for 1100 to 800Ma (1998) Earth Planet. Sci. Lett., 154, pp. 13-24

Citas:

---------- APA ----------
Rapalini, A.E., Tohver, E., Bettucci, L.S., Lossada, A.C., Barcelona, H. & Pérez, C. (2015) . The late Neoproterozoic Sierra de las Ánimas Magmatic Complex and Playa Hermosa Formation, southern Uruguay, revisited: Paleogeographic implications of new paleomagnetic and precise geochronologic data. Precambrian Research, 259, 143-155.
http://dx.doi.org/10.1016/j.precamres.2014.11.021
---------- CHICAGO ----------
Rapalini, A.E., Tohver, E., Bettucci, L.S., Lossada, A.C., Barcelona, H., Pérez, C. "The late Neoproterozoic Sierra de las Ánimas Magmatic Complex and Playa Hermosa Formation, southern Uruguay, revisited: Paleogeographic implications of new paleomagnetic and precise geochronologic data" . Precambrian Research 259 (2015) : 143-155.
http://dx.doi.org/10.1016/j.precamres.2014.11.021
---------- MLA ----------
Rapalini, A.E., Tohver, E., Bettucci, L.S., Lossada, A.C., Barcelona, H., Pérez, C. "The late Neoproterozoic Sierra de las Ánimas Magmatic Complex and Playa Hermosa Formation, southern Uruguay, revisited: Paleogeographic implications of new paleomagnetic and precise geochronologic data" . Precambrian Research, vol. 259, 2015, pp. 143-155.
http://dx.doi.org/10.1016/j.precamres.2014.11.021
---------- VANCOUVER ----------
Rapalini, A.E., Tohver, E., Bettucci, L.S., Lossada, A.C., Barcelona, H., Pérez, C. The late Neoproterozoic Sierra de las Ánimas Magmatic Complex and Playa Hermosa Formation, southern Uruguay, revisited: Paleogeographic implications of new paleomagnetic and precise geochronologic data. Precambrian Res. 2015;259:143-155.
http://dx.doi.org/10.1016/j.precamres.2014.11.021