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dc.contributor.author
Pearson, Nadine J.
dc.contributor.author
Mangano, Maria Gabriela
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Buatois, Luis Alberto
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Casadio, Silvio Alberto
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Rodriguez Raising, Martin Eduardo
dc.date.available
2017-06-07T19:12:54Z
dc.date.issued
2013-07
dc.identifier.citation
Pearson, Nadine J.; Mangano, Maria Gabriela; Buatois, Luis Alberto; Casadio, Silvio Alberto; Rodriguez Raising, Martin Eduardo; Environmental variability of Macaronichnus ichnofabrics in Eocene tidal-embayment deposits of southern Patagonia, Argentina; Wiley; Lethaia; 46; 3; 7-2013; 341-354
dc.identifier.issn
0024-1164
dc.identifier.uri
http://hdl.handle.net/11336/17689
dc.description.abstract
The Middle Eocene Man Aike Formation of southern Patagonia, Argentina, offers the opportunity to study the palaeoecological and palaeoenvironmental significance of Macaronichnus ichnofabrics in a tide-dominated, coastal embayment compound-dune complex. Four recurrent Macaronichnus ichnofabrics are recognized: Macaronichnus IF-1 characterized by Macaronichnus segregatis segregatis; Macaronichnus IF-2 with M. segregatis segregatis, Ophiomorpha nodosa, Skolithos linearis and rare Palaeophycus tubularis; Macaronichnus IF-3 typified by M. segregatis segregatis, O. nodosa, Asterosoma radiciforme and rare S. linearis; and Macaronichnus IF-4 consisting of M. segregatis segregatis, Nereites missouriensis, A. radiciforme, O. nodosa, Rosselia socialis, S. linearis, P. tubularis, Planolites isp. and Chondrites isp. Variations in these ichnofabrics are linked to changes in local hydraulic conditions in the upper and lower trough areas of the compound dunes. In high-energy, shallow and marginal marine environments, the Macaronichnus tracemaker is commonly the first to colonize the shifting, sandy substrates. Overprinting by other ichnoguilds occurs only after the physiochemical conditions became favourable and the colonization window length increases.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Eocene
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Ichnofabrics
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Macaronichnus
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Patagonia
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Geología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Environmental variability of Macaronichnus ichnofabrics in Eocene tidal-embayment deposits of southern Patagonia, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2015-10-15T19:59:37Z
dc.journal.volume
46
dc.journal.number
3
dc.journal.pagination
341-354
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Pearson, Nadine J.. University Of Saskatchewan; Canadá
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Fil: Mangano, Maria Gabriela. University Of Saskatchewan; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Buatois, Luis Alberto. University Of Saskatchewan; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Casadio, Silvio Alberto. Universidad Nacional de Rio Negro. Sede Alto Valle. Instituto de Investigaciones en Paleobiologia y Geologia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Rodriguez Raising, Martin Eduardo. Geomap S.a.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Lethaia
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/let.12012
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/let.12012/abstract
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