Palynomorphs from the Ribeira da Lage section (Lower Tortonian, Lower Tagus Basin, Portugal)

L. Sousa; P. Legoinha; J. Pais

Palynomorphs from the Ribeira da Lage section (Lower Tortonian, Lower Tagus Basin, Portugal)

DCT - Departamento de Ciências da Terra

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Palynomorphs from "Ribeira da Lage" were studied. The section is Lower Tortonian (N15, 87Sr/86Sr dating 11.3-12.2 Ma) in age, and correspond to the local depositional sequence T1. Pollen indicate open forests with mediterranean taxa. Peridinioid dinoflagellates predominate in the lower part of the section indicating the proximity of the literal and large productivity and/or up-welling currents, with low oxygen levels at the bottom. The disappearance of peridinioids, and development of gonyaulacoids in the upper part of the section may correspond to a more oxygenated neritic environment. Key-words: palynomorphs, dinoflagellates, Miocene, Tortonian, Ribeira da Lage, Lower Tagus Basin, Portugal.

Original language	English
Title of host publication	European Paleontological Association Workshop: Abstracts
Place of Publication	Lisboa
Pages	118-121
Publication status	Published - Jul 1999
Event	European Paleontological Association Workshop - Lisboa, Lisboa, Portugal Duration: 22 Jun 1999 → 25 Jun 1999

Workshop

Workshop	European Paleontological Association Workshop
Country/Territory	Portugal
City	Lisboa
Period	22/06/99 → 25/06/99

Cite this

@inproceedings{7eb0163e58bf4500bfd29cf88e9b961a,

title = "Palynomorphs from the Ribeira da Lage section (Lower Tortonian, Lower Tagus Basin, Portugal)",

abstract = "Palynomorphs from {"}Ribeira da Lage{"} were studied. The section is Lower Tortonian (N15, 87Sr/86Sr dating 11.3-12.2 Ma) in age, and correspond to the local depositional sequence T1. Pollen indicate open forests with mediterranean taxa. Peridinioid dinoflagellates predominate in the lower part of the section indicating the proximity of the literal and large productivity and/or up-welling currents, with low oxygen levels at the bottom. The disappearance of peridinioids, and development of gonyaulacoids in the upper part of the section may correspond to a more oxygenated neritic environment. Key-words: palynomorphs, dinoflagellates, Miocene, Tortonian, Ribeira da Lage, Lower Tagus Basin, Portugal.",

author = "L. Sousa and P. Legoinha and J. Pais",

year = "1999",

month = jul,

language = "English",

pages = "118--121",

booktitle = "European Paleontological Association Workshop: Abstracts",

note = "European Paleontological Association Workshop ; Conference date: 22-06-1999 Through 25-06-1999",

}

TY - GEN

T1 - Palynomorphs from the Ribeira da Lage section (Lower Tortonian, Lower Tagus Basin, Portugal)

AU - Sousa, L.

AU - Legoinha, P.

AU - Pais, J.

PY - 1999/7

Y1 - 1999/7

N2 - Palynomorphs from "Ribeira da Lage" were studied. The section is Lower Tortonian (N15, 87Sr/86Sr dating 11.3-12.2 Ma) in age, and correspond to the local depositional sequence T1. Pollen indicate open forests with mediterranean taxa. Peridinioid dinoflagellates predominate in the lower part of the section indicating the proximity of the literal and large productivity and/or up-welling currents, with low oxygen levels at the bottom. The disappearance of peridinioids, and development of gonyaulacoids in the upper part of the section may correspond to a more oxygenated neritic environment. Key-words: palynomorphs, dinoflagellates, Miocene, Tortonian, Ribeira da Lage, Lower Tagus Basin, Portugal.

AB - Palynomorphs from "Ribeira da Lage" were studied. The section is Lower Tortonian (N15, 87Sr/86Sr dating 11.3-12.2 Ma) in age, and correspond to the local depositional sequence T1. Pollen indicate open forests with mediterranean taxa. Peridinioid dinoflagellates predominate in the lower part of the section indicating the proximity of the literal and large productivity and/or up-welling currents, with low oxygen levels at the bottom. The disappearance of peridinioids, and development of gonyaulacoids in the upper part of the section may correspond to a more oxygenated neritic environment. Key-words: palynomorphs, dinoflagellates, Miocene, Tortonian, Ribeira da Lage, Lower Tagus Basin, Portugal.

M3 - Conference contribution

SP - 118

EP - 121

BT - European Paleontological Association Workshop: Abstracts

CY - Lisboa

T2 - European Paleontological Association Workshop

Y2 - 22 June 1999 through 25 June 1999

ER -

Palynomorphs from the Ribeira da Lage section (Lower Tortonian, Lower Tagus Basin, Portugal)

Abstract

Workshop

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