Age and palaeoenvironment of the 'Serie del Yeso', Valle del Cura, San Juan Province: Palynological evidence.

A diverse and well preserved palynological assemblage is reported for the first time from the Upper section of the 'Serie del Yeso', San Juan province, Argentina. The assemblage is dominated by herbaceous and shrubby forms of the families Cyperaceae, Poaceae, Malvaceae, Sympocaceae, Astera...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Barreda, Viviana Dora, Gutierrez, Pedro Raúl, Limarino, Carlos Oscar
Publicado: 1998
Materias:
'Serie del Yeso'
Miocene
Palaeoenvironment
Palynostratigraphy
San Juan Province
paleoenvironment
palynology
Argentina
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v35_n3_p321_Barreda
http://hdl.handle.net/20.500.12110/paper_00027014_v35_n3_p321_Barreda
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00027014_v35_n3_p321_Barreda
record_format dspace
spelling paper:paper_00027014_v35_n3_p321_Barreda2023-06-08T14:22:00Z Age and palaeoenvironment of the 'Serie del Yeso', Valle del Cura, San Juan Province: Palynological evidence. Barreda, Viviana Dora Gutierrez, Pedro Raúl Limarino, Carlos Oscar 'Serie del Yeso' Miocene Palaeoenvironment Palynostratigraphy San Juan Province Miocene paleoenvironment palynology Argentina A diverse and well preserved palynological assemblage is reported for the first time from the Upper section of the 'Serie del Yeso', San Juan province, Argentina. The assemblage is dominated by herbaceous and shrubby forms of the families Cyperaceae, Poaceae, Malvaceae, Sympocaceae, Asteraceae, Anacardiaceae and Ephedraceae which, on sedimentological and palynological grounds, may have developed in the surroundings of a lacustrine environment. Tree components and ferns are very sparse. Fresh water algae, mainly Botryococcus, are abundant. A few dinoflagellate cysts and acritarchs are present in this assemblage which may suggest brackish conditions in the lake. The great development of gypsum seams in the Upper Section of the 'Serie del Yeso' is in accord with this assumption. The spore-pollen assemblage suggests warm to warm temperate and dry climate conditions. This assemblage also suggests a Miocene age for this unit, probably Middle Miocene. A new combination, Mutisiapollis viteauensis (Barreda) Barreda comb. nov., is here proposed. Cyperaceaepollenites neogenicus Krutzsc 1970 and Tetracolporites spectabilis Pocknall and Mildenhall 1984 are reported for the first time from Argentina. Fil:Barreda, V.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gutiérrez, P.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Limarino, C.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1998 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v35_n3_p321_Barreda http://hdl.handle.net/20.500.12110/paper_00027014_v35_n3_p321_Barreda
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 'Serie del Yeso'
Miocene
Palaeoenvironment
Palynostratigraphy
San Juan Province
Miocene
paleoenvironment
palynology
Argentina
spellingShingle 'Serie del Yeso'
Miocene
Palaeoenvironment
Palynostratigraphy
San Juan Province
Miocene
paleoenvironment
palynology
Argentina
Barreda, Viviana Dora
Gutierrez, Pedro Raúl
Limarino, Carlos Oscar
Age and palaeoenvironment of the 'Serie del Yeso', Valle del Cura, San Juan Province: Palynological evidence.
topic_facet 'Serie del Yeso'
Miocene
Palaeoenvironment
Palynostratigraphy
San Juan Province
Miocene
paleoenvironment
palynology
Argentina
description A diverse and well preserved palynological assemblage is reported for the first time from the Upper section of the 'Serie del Yeso', San Juan province, Argentina. The assemblage is dominated by herbaceous and shrubby forms of the families Cyperaceae, Poaceae, Malvaceae, Sympocaceae, Asteraceae, Anacardiaceae and Ephedraceae which, on sedimentological and palynological grounds, may have developed in the surroundings of a lacustrine environment. Tree components and ferns are very sparse. Fresh water algae, mainly Botryococcus, are abundant. A few dinoflagellate cysts and acritarchs are present in this assemblage which may suggest brackish conditions in the lake. The great development of gypsum seams in the Upper Section of the 'Serie del Yeso' is in accord with this assumption. The spore-pollen assemblage suggests warm to warm temperate and dry climate conditions. This assemblage also suggests a Miocene age for this unit, probably Middle Miocene. A new combination, Mutisiapollis viteauensis (Barreda) Barreda comb. nov., is here proposed. Cyperaceaepollenites neogenicus Krutzsc 1970 and Tetracolporites spectabilis Pocknall and Mildenhall 1984 are reported for the first time from Argentina.
author Barreda, Viviana Dora
Gutierrez, Pedro Raúl
Limarino, Carlos Oscar
author_facet Barreda, Viviana Dora
Gutierrez, Pedro Raúl
Limarino, Carlos Oscar
author_sort Barreda, Viviana Dora
title Age and palaeoenvironment of the 'Serie del Yeso', Valle del Cura, San Juan Province: Palynological evidence.
title_short Age and palaeoenvironment of the 'Serie del Yeso', Valle del Cura, San Juan Province: Palynological evidence.
title_full Age and palaeoenvironment of the 'Serie del Yeso', Valle del Cura, San Juan Province: Palynological evidence.
title_fullStr Age and palaeoenvironment of the 'Serie del Yeso', Valle del Cura, San Juan Province: Palynological evidence.
title_full_unstemmed Age and palaeoenvironment of the 'Serie del Yeso', Valle del Cura, San Juan Province: Palynological evidence.
title_sort age and palaeoenvironment of the 'serie del yeso', valle del cura, san juan province: palynological evidence.
publishDate 1998
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00027014_v35_n3_p321_Barreda
http://hdl.handle.net/20.500.12110/paper_00027014_v35_n3_p321_Barreda
work_keys_str_mv AT barredavivianadora ageandpalaeoenvironmentoftheseriedelyesovalledelcurasanjuanprovincepalynologicalevidence
AT gutierrezpedroraul ageandpalaeoenvironmentoftheseriedelyesovalledelcurasanjuanprovincepalynologicalevidence
AT limarinocarlososcar ageandpalaeoenvironmentoftheseriedelyesovalledelcurasanjuanprovincepalynologicalevidence
_version_ 1768545717171781632

Ejemplares similares