Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance

Six facies associations are described for the Puesto Almada Member at the Cerro Bandera locality (Fossati sub-basin). They correspond to lacustrine, palustrine, and pedogenic deposits (limestones); and subordinated alluvial fan, fluvial, aeolian, and pyroclastic deposits. The lacustrine-palustrine d...

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Autores principales:	Cabaleri, N.G., Benavente, C.A., Monferran, M.D., Narváez, P.L., Volkheimer, W., Gallego, O.F., Do Campo, M.D.
Formato:	JOUR
Materias:	Cañadón Asfalto Formation Facies Palaeoclimatology Palaeontology Patagonia Upper Jurassic Jurassic Algae Deposits Forestry Sedimentology Sediments Wetlands Petroleum geology alluvial fan arid region depositional environment facies fossil assemblage green alga lacustrine deposit new record paleoclimate paleoenvironment paleontology sedimentation sedimentology Argentina Cheirolepidiaceae Chlorophyta Coleoptera Conchostraca Filicophyta Gymnospermae Hemiptera Hexapoda Insecta Invertebrata Ostracoda
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00370738_v296_n_p103_Cabaleri
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	todo:paper_00370738_v296_n_p103_Cabaleri2023-10-03T14:48:03Z Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance Cabaleri, N.G. Benavente, C.A. Monferran, M.D. Narváez, P.L. Volkheimer, W. Gallego, O.F. Do Campo, M.D. Cañadón Asfalto Formation Facies Palaeoclimatology Palaeontology Patagonia Upper Jurassic Facies Jurassic Palaeoclimatology Palaeontology Patagonia Algae Deposits Forestry Sedimentology Sediments Wetlands Petroleum geology alluvial fan arid region depositional environment facies fossil assemblage green alga Jurassic lacustrine deposit new record paleoclimate paleoenvironment paleontology sedimentation sedimentology Argentina Patagonia Cheirolepidiaceae Chlorophyta Coleoptera Conchostraca Filicophyta Gymnospermae Hemiptera Hexapoda Insecta Invertebrata Ostracoda Six facies associations are described for the Puesto Almada Member at the Cerro Bandera locality (Fossati sub-basin). They correspond to lacustrine, palustrine, and pedogenic deposits (limestones); and subordinated alluvial fan, fluvial, aeolian, and pyroclastic deposits. The lacustrine-palustrine depositional setting consisted of carbonate alkaline shallow lakes surrounded by flooded areas in a low-lying topography. The facies associations constitute four shallowing upward successions defined by local exposure surfaces: 1) a Lacustrine-Palustrine-pedogenic facies association with a 'conchostracan'-ostracod association; 2) a Palustrine facies association representing a wetland subenvironment, and yielding 'conchostracans', body remains of insects, fish scales, ichnofossils, and palynomorphs (cheirolepidiacean species and ferns growing around water bodies, and other gymnosperms in more elevated areas); 3) an Alluvial fan facies association indicating the source of sediment supply; and 4) a Lacustrine facies association representing a second wetland episode, and yielding 'conchostracans', insect ichnofossils, and a palynoflora mainly consisting of planktonic green algae associated with hygrophile elements. The invertebrate fossil assemblage found contains the first record of fossil insect bodies (Insecta-Hemiptera and Coleoptera) for the Cañadón Asfalto Formation. The succession reflects a mainly climatic control over sedimentation. The sedimentary features of the Puesto Almada Member are in accordance with an arid climatic scenario across the Upper Jurassic, and they reflect a strong seasonality with periods of higher humidity represented by wetlands and lacustrine sediments. © 2013 Elsevier B.V. Fil:Cabaleri, N.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Do Campo, M.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00370738_v296_n_p103_Cabaleri
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Cañadón Asfalto Formation Facies Palaeoclimatology Palaeontology Patagonia Upper Jurassic Facies Jurassic Palaeoclimatology Palaeontology Patagonia Algae Deposits Forestry Sedimentology Sediments Wetlands Petroleum geology alluvial fan arid region depositional environment facies fossil assemblage green alga Jurassic lacustrine deposit new record paleoclimate paleoenvironment paleontology sedimentation sedimentology Argentina Patagonia Cheirolepidiaceae Chlorophyta Coleoptera Conchostraca Filicophyta Gymnospermae Hemiptera Hexapoda Insecta Invertebrata Ostracoda
spellingShingle	Cañadón Asfalto Formation Facies Palaeoclimatology Palaeontology Patagonia Upper Jurassic Facies Jurassic Palaeoclimatology Palaeontology Patagonia Algae Deposits Forestry Sedimentology Sediments Wetlands Petroleum geology alluvial fan arid region depositional environment facies fossil assemblage green alga Jurassic lacustrine deposit new record paleoclimate paleoenvironment paleontology sedimentation sedimentology Argentina Patagonia Cheirolepidiaceae Chlorophyta Coleoptera Conchostraca Filicophyta Gymnospermae Hemiptera Hexapoda Insecta Invertebrata Ostracoda Cabaleri, N.G. Benavente, C.A. Monferran, M.D. Narváez, P.L. Volkheimer, W. Gallego, O.F. Do Campo, M.D. Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance
topic_facet	Cañadón Asfalto Formation Facies Palaeoclimatology Palaeontology Patagonia Upper Jurassic Facies Jurassic Palaeoclimatology Palaeontology Patagonia Algae Deposits Forestry Sedimentology Sediments Wetlands Petroleum geology alluvial fan arid region depositional environment facies fossil assemblage green alga Jurassic lacustrine deposit new record paleoclimate paleoenvironment paleontology sedimentation sedimentology Argentina Patagonia Cheirolepidiaceae Chlorophyta Coleoptera Conchostraca Filicophyta Gymnospermae Hemiptera Hexapoda Insecta Invertebrata Ostracoda
description	Six facies associations are described for the Puesto Almada Member at the Cerro Bandera locality (Fossati sub-basin). They correspond to lacustrine, palustrine, and pedogenic deposits (limestones); and subordinated alluvial fan, fluvial, aeolian, and pyroclastic deposits. The lacustrine-palustrine depositional setting consisted of carbonate alkaline shallow lakes surrounded by flooded areas in a low-lying topography. The facies associations constitute four shallowing upward successions defined by local exposure surfaces: 1) a Lacustrine-Palustrine-pedogenic facies association with a 'conchostracan'-ostracod association; 2) a Palustrine facies association representing a wetland subenvironment, and yielding 'conchostracans', body remains of insects, fish scales, ichnofossils, and palynomorphs (cheirolepidiacean species and ferns growing around water bodies, and other gymnosperms in more elevated areas); 3) an Alluvial fan facies association indicating the source of sediment supply; and 4) a Lacustrine facies association representing a second wetland episode, and yielding 'conchostracans', insect ichnofossils, and a palynoflora mainly consisting of planktonic green algae associated with hygrophile elements. The invertebrate fossil assemblage found contains the first record of fossil insect bodies (Insecta-Hemiptera and Coleoptera) for the Cañadón Asfalto Formation. The succession reflects a mainly climatic control over sedimentation. The sedimentary features of the Puesto Almada Member are in accordance with an arid climatic scenario across the Upper Jurassic, and they reflect a strong seasonality with periods of higher humidity represented by wetlands and lacustrine sediments. © 2013 Elsevier B.V.
format	JOUR
author	Cabaleri, N.G. Benavente, C.A. Monferran, M.D. Narváez, P.L. Volkheimer, W. Gallego, O.F. Do Campo, M.D.
author_facet	Cabaleri, N.G. Benavente, C.A. Monferran, M.D. Narváez, P.L. Volkheimer, W. Gallego, O.F. Do Campo, M.D.
author_sort	Cabaleri, N.G.
title	Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance
title_short	Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance
title_full	Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance
title_fullStr	Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance
title_full_unstemmed	Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance
title_sort	sedimentology and palaeontology of the upper jurassic puesto almada member (cañadón asfalto formation, fossati sub-basin), patagonia argentina: palaeoenvironmental and climatic significance
url	http://hdl.handle.net/20.500.12110/paper_00370738_v296_n_p103_Cabaleri
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Sedimentology and palaeontology of the Upper Jurassic Puesto Almada Member (Cañadón Asfalto Formation, Fossati sub-basin), Patagonia Argentina: Palaeoenvironmental and climatic significance

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