Clastos con calcimicrobios y arqueociatos procedentes de depósitos marinos del talud de la Formación cámbrica del Monte Wegener, Coats Land, Cordillera de Shackleton Antártida

Autores/as

DOI:

https://doi.org/10.3989/egeol.43586.567

Palabras clave:

Calcimicrobios, Arqueociatos, Cordillera Shackleton, Antártica, Gondwana

Resumen


Los clastos carbonatados de la Formación del Monte Wegener proporcionan evidencias sedimentológicas, diagenéticas y paleontológicas de la destrucción y resedimentación de un registro carbonatadoo cámbrico oculto/no conocido en aguas someras de la región de Coats Land en la Antártida. Este mosaico incompleto podría jugar un papel clave en las comparaciones y correlaciones bioestratigráficas entre el registro cámbrico de las Montañas Transantárticas, el bloque Ellsworth-Whitmore y la Península Antártica del continente antártico. Además, representa un registro clave en las futuras reconstrucciones paleobiogeográficas de Gondwana meridional basadas en asociaciones de arqueociatos.

Descargas

Los datos de descargas todavía no están disponibles.

Citas

Boger, S.D. (2011). Antarctica-before and after Gondwana. Gondwana Research, 19: 335-371. https://doi.org/10.1016/j.gr.2010.09.003

Buggisch, W. & Henjes-Kunst, F. (1999). Stratigraphy, facies, and provenance analyses of the Lower Cambrian Mount Wegener Formation of the Shackleton Range, Antarctica. Terra Antartica, 6: 211-228.

Buggisch, W. & Kleinschmidt, G. (1999). New evidence for nappe tectonics in the southern Shackleton Range, Antarctica. Terra Antartica, 6: 203-210.

Buggisch, W.; Kleinschmidt, G.; Höhndorf, A. & Pohl, J. (1994a). Stratigraphy and facies of sediments and low-grade metasediments in the Shackleton Range, Antarctica. Porlarforschung, 63: 9-32.

Buggisch, W.; Kleinschmidt, G.; Kreuzer, H. & Krumm, S. (1994b). Metamorphic and structural evolution of the southern Shackleton Range during the Ross Orogeny. Porlarforschung, 63: 133-156.

Clarkson, P.D. (1972). Geology of the Shackleton Range. Bulletin British Antarctic Survey, 31: 1-15.

Clarkson, P.D.; Tessensohn, F.; Thomson, J.W. et al. (1995). Geological map of Shackleton Range, Antarctica. BAS GEOMAP Series, Sheet 4, 1:250.000, with supplementary text, 79 pp. Cambridge, British Antarctic Survey.

Debrenne, F. (1975). Archaeocyatha provenant de blocs erratiques des tillites de Dwyka (Afrique du Sud). Annals of the South African Museum, 67: 331-361.

Debrenne, F. (1992). The archaeocyathan fauna from the Whiteout Conglomerate, Ellsworth Mountains, West Antarctica. In: Geology and Paleontology of the Ellsworth Mountains, West Antarctica (Webers, G.F.; Craddock, C. & Splettstoesser, J.F., eds.). Geological Society of America, Memoir, 170: 279-284. https://doi.org/10.1130/MEM170-p279

Debrenne, F. & Kruse, P.D. (1986). Shackleton Limestone archaeocyaths. Alcheringa, 10: 235-278. https://doi.org/10.1080/03115518608619158

Debrenne, F. & Kruse, P. D. (1989). Cambrian Antarctic archaeocyaths. Geological Society of London Special Publications, 47: 15-28. https://doi.org/10.1144/GSL.SP.1989.047.01.03

Debrenne, F.; Rozanov, A.Yu. & Webers, G.F. (1984). Upper Cambrian Archaeocyatha from Antarctica. Geological Magazine, 121: 291-299. https://doi.org/10.1017/S0016756800029186

González, P.D.; Tortello, M.F. & Damborenea, S.E. (2011). Early Cambrian archaeocyathan limestone blocks in lowgrade metaconglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina). Geologica Acta, 9: 159-173.

Gonzalez, P.D.; Tortello, M.F.; Damborenea, S.E.; Naipauer, M.; Sato, A.M. & Varela, R. (2013). Archaeocyaths from South America: review and a new record. Geological Journal, 48(2-3):114-125. https://doi.org/10.1002/gj.2415

Gordon, W.T. (1920). Scottish National Antarctic Expedition 1902-1904: Cambrian organic remains from a dredging in the Weddell Sea. Royal Society of Edinburgh, Transactions, 52: 681-714. https://doi.org/10.1017/S0080456800015957

Gray, D.R.; Foster, D.A.; Meert, J.G.; Goscombe, B.D.; Armstrong, R.; Trouw, R.A.J. & Passchier, W. (2008). A Damara orogen perspective on the assembly of the southwestern Gondwana. Geological Society, London, Special Publications, 294: 257-278. https://doi.org/10.1144/SP294.14

Hill, D. (1964a). Archaeocyatha from the Shackleton Limestone of the Ross System, Nimrod Glacier area, Antarctica. Transactions of the Royal Society of New Zealand, Geology, 2: 137-146.

Hill, D. (1964b). Archaeocyatha from loose material at Plunket Point at the head of Beardmore Glacier. In: Antarctic Geology (Adie, R.J.; Ed.), 609-622.

Hill, D. (1965). Archaeocyatha from Antarctica and a review of the phylum. Trans-Antarctic Expedition 1955-1958, Scientific Reports 10 (Geology 3), 151 pp.

Höfle, H.Ch. & Buggisch, W. (1995). Glacial geology and petrography of erratics in the Shackleton Range, Antartica. Polarforschung, 63: 183-201.

Kleinschmidt, G. (2007). Shackleton Range. In: Encyclopedia of the Antarctic (Riffenburgh, B. ed.), Volume 1. Taylor and Francis Group, 890-891.

Morycowa, E.; Rubinowski, Z. & Tokarski, A.K. (1982). Archaeocyathids from a moraine at Three Sisters Point, King George Island (South Shetland Islands, Antarctica). Studia Geologica Polonica, 74: 73-80.

Perejón, A.; Rodríguez-Martínez, M.; Moreno-Eiris, E.; Menéndez, S. & Reitner J. (2019). First microbial-archaeocyathan boundstone record from early Cambrian erratic cobbles in glacial diamictite deposits of Namibia (Dwyka Group, Carboniferous). Journal of Systematic Palaeontology, 17: 881-910. https://doi.org/10.1080/14772019.2018.1481151

Pirie, J.H.H. (1913). Scottish National Antarctic Expedition, 1902-04: Deep-sea deposits. Transactions of the Royal Society of Edinburgh, 49: 645-686. https://doi.org/10.1017/S0080456800013120

Stone, P.; Thomson, M.R.A. & Rushton, W.A. (2012). An Early Cambrian archaeocyath-trilobite fauna in limestone erratics from the Upper Carboniferous Fitzroy Tillite Formation, Falkland Islands. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 102: 201-225. https://doi.org/10.1017/S175569101101005X

Tessensohn, F.; Kleinschimidt, G.; Talarico, F.; Buggisch, W.; Brommer, A.; Henjes-Kunst, F.; Kroner, U.; Millar, I.L. & Zeh, A. (1999). Ross-age amalgamation of East and West Gondwana: evidence from the Shackleton Range, Antarctica. Terra Antartica, 6: 317-325.

Wood, R.; Evans, K.R. & Zhuravlev A.Yu. (1992). A new post-early Cambrian archaeocyath from Antarctica. Geological Magazine, 129: 491-495. https://doi.org/10.1017/S0016756800019579

Wrona, R. & Zhuravlev, A.Yu. (1996). Early Cambrian archaeocyaths from glacial erratics of King George Island (South Shetland Islands), Antarctica. Palaeontologica Polonica, 55: 9-36.

Publicado

2019-12-30

Cómo citar

Rodríguez-Martínez, M., Perejón, A., Moreno-Eiris, E., Menéndez, S., & Buggisch, W. (2019). Clastos con calcimicrobios y arqueociatos procedentes de depósitos marinos del talud de la Formación cámbrica del Monte Wegener, Coats Land, Cordillera de Shackleton Antártida. Estudios Geológicos, 75(2), e112. https://doi.org/10.3989/egeol.43586.567

Número

Sección

Artículos