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dc.contributor.author
Poire, Daniel Gustavo  
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Pereira, Martín  
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Gonzalez, Gloria  
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Tineo, David  
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Vergani, Gustavo Dardo  
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Kaufman, Johanna Florencia  
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Schwarz, Ernesto  
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Georgieff, Sergio Miguel  
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Piovano, Eduardo Luis  
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Ariztegui, Daniel  
dc.date.available
2024-05-07T09:30:16Z  
dc.date.issued
2010  
dc.identifier.citation
Ichnolithological associations from the Huamampampa Formation: a methodological approach to understand open shelf and estuarine sedimentation during the Devonian of the Sub Abdean Foothill, Bolivia; 18th Internacional Sedimentological Congress; Mendoza; Argentina; 2010; 712-712  
dc.identifier.isbn
978-987-96296-4-2  
dc.identifier.uri
http://hdl.handle.net/11336/234656  
dc.description.abstract
The Huamampampa Formation has been classically interpreted as the product of shallow open-marine sedimentation in a Devonian shelf. However, recent ichnological and sedimentological studies conducted on six cores and some outcrops have allwed the recognition of the occurrence of brackish water sedimentation during the deposition of the Huamampampa Formation. Trece fossils identified in cores and outcrops include Arenicolites, Asterosoma, Bergaueria, Chondrites, Cylindrichnus, Diplocraterion, Helminthopsis, Macaronichnus, Neonereites, Palaeophycus, Phycodes, Rhizocorallium, Rosselia, Skolithos, Teichichnus, and Zoophycos. These ichnogenera are grouped in the Cruziana, Skolithos and an impoverished ichnofacies from sections of the Huamampampa Formation analysed along the Sub-Andean foothills in east-southern Bolivia.The aim of this contribution is to show the methodology applied to carry out this study, which includes the measurement every 5 cm of Numerical Facies (NF), Bioturbation Index (BI), Ichnodiversity Index (IdI), Ichnogenus Size Ordening (ISO), and the geostatistic analysis of their obtained curves. Then, ichnofacies and ichnolithological associations have been used to recognise different subenvironments in a tide-dominated delta (or estuarine)- shallow marine environment. Nine ichnolithological associations were identified. The ichnolithological associations identified are i) Sandy facies with Cruziana ichnofacies (S-Cr), high bioturbation and ichnodiversity (assigned to shallow marine, upper shoreface); ii) Sandy facies with Impoverished ichnofacies (S-Imp), low bioturbation and ichnodiversity, general size reductions of ichnogenera (tide-dominated delta or estuarine, longitudinal bars, brackish water); iii) Sandy facies with Impoverished-Skolithos ichnofacies (S-Imp-Sk), low bioturbation and ichnodiversity, isolated Skolithos (top of longitudinal bars, high-energy pulses); iv) Sandy facies with belts of Arenicolites (S-bAr), horizontal levels of just Arenicolites up to 5 cm thick (high energy pulses crossing different facies, in the delta front or in the shoreface); v) Sand-rich heterolithic facies with Cruziana ichnofacies (Hts-Cr), moderate bioturbation and ichnodiversity (shallow marine, upper to middle shoreface); vi) Sand-rich heterolithic facies with Cylindrichnus and Rosselia (Hts-Cyl-Ros), moderate bioturbation and low ichnodiversity (shallow marine, upper shoreface); vii) Heterolithic facies with Cruziana ichnofacies (Ht-Cr), high bioturbation and ichnodiversity (shallow marine, transition zone between lower shoreface and offshore, open shelf); viii) Heterolithic facies with Impoverished ichnofacies (Ht-Imp), low bioturbation and ichnodiversity, reduced size of trace fossils (tide-dominated delta or estuarine, delta front, brackish water); and ix) Sandy facies with no bioturbation (S-Not Biot), interpreted as fluvial channels.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
International Association of Sedimentologists  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ICHNOLOGICAL ASSOCIATIONS  
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HUAMAMPAMPA FORMATION  
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SUB ANDEAN FOOTHILL  
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BOLIVIA  
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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
Ichnolithological associations from the Huamampampa Formation: a methodological approach to understand open shelf and estuarine sedimentation during the Devonian of the Sub Abdean Foothill, Bolivia  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.type
info:eu-repo/semantics/conferenceObject  
dc.type
info:ar-repo/semantics/documento de conferencia  
dc.date.updated
2024-05-03T16:00:07Z  
dc.journal.pagination
712-712  
dc.journal.pais
Argentina  
dc.journal.ciudad
Córdoba  
dc.description.fil
Fil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina  
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Fil: Pereira, Martín. Pluspetrol S.a.; Argentina  
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Fil: Gonzalez, Gloria. Pluspetrol Bolivia Corporation S. A.; Bolivia  
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Fil: Tineo, David. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina  
dc.description.fil
Fil: Vergani, Gustavo Dardo. Pluspetrol S.a.; Argentina  
dc.description.fil
Fil: Kaufman, Johanna Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina  
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dc.coverage
Internacional  
dc.type.subtype
Congreso  
dc.description.nombreEvento
18th Internacional Sedimentological Congress  
dc.date.evento
2010-09-26  
dc.description.ciudadEvento
Mendoza  
dc.description.paisEvento
Argentina  
dc.type.publicacion
Book  
dc.description.institucionOrganizadora
International Association of Sedimentologists  
dc.source.libro
18th International Sedimentological Congress  
dc.date.eventoHasta
2010-10-01  
dc.type
Congreso