Paleomagnetic evidence for the evolution of Meso- to Neo-proterozoic glaciogenic rocks in central-eastern Brazil

Manoel S. D'Agrella-Filho; Igor G. Pacca; Wilson Teixeira; Tullis C. Onstott; Paul R. Renne

doi:10.1016/0031-0182(90)90136-U

Paleomagnetic evidence for the evolution of Meso- to Neo-proterozoic glaciogenic rocks in central-eastern Brazil

Manoel S. D'Agrella-Filho, Igor G. Pacca, Wilson Teixeira, Tullis C. Onstott, Paul R. Renne

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Paleomagnetic studies on basic dikes in the eastern São Francisco Craton which have isotopic ages of 1.0-1.1 Ga, define an apparent polar wander path for South America over this time interval. The data indicate that the São Francisco Craton was at paleolatitudes between 40° and 65° at the time of emplacement of these dikes. Neo-Proterozoic sedimentary glaciogenic rocks, the Macaúbas Group, Bebedouro Formation, Ibiá Formation and Carandai Formation, crop out in central-eastern Brazil. An age of about 1.0 Ga has been proposed for these glacial deposits. Paleogeographical reconstructions of South America show a continental movement coherent with paleoenvironmental models proposed for the Macaúbas Group and suggest that the glacial period may have occurred between 1.01 and 1.08 Ga.

Original language	English (US)
Pages (from-to)	255-265
Number of pages	11
Journal	Palaeogeography, Palaeoclimatology, Palaeoecology
Volume	80
Issue number	3-4
DOIs	https://doi.org/10.1016/0031-0182(90)90136-U
State	Published - Nov 1990

All Science Journal Classification (ASJC) codes

Oceanography
Ecology, Evolution, Behavior and Systematics
Earth-Surface Processes
Palaeontology

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title = "Paleomagnetic evidence for the evolution of Meso- to Neo-proterozoic glaciogenic rocks in central-eastern Brazil",

abstract = "Paleomagnetic studies on basic dikes in the eastern S{\~a}o Francisco Craton which have isotopic ages of 1.0-1.1 Ga, define an apparent polar wander path for South America over this time interval. The data indicate that the S{\~a}o Francisco Craton was at paleolatitudes between 40° and 65° at the time of emplacement of these dikes. Neo-Proterozoic sedimentary glaciogenic rocks, the Maca{\'u}bas Group, Bebedouro Formation, Ibi{\'a} Formation and Carandai Formation, crop out in central-eastern Brazil. An age of about 1.0 Ga has been proposed for these glacial deposits. Paleogeographical reconstructions of South America show a continental movement coherent with paleoenvironmental models proposed for the Maca{\'u}bas Group and suggest that the glacial period may have occurred between 1.01 and 1.08 Ga.",

author = "D'Agrella-Filho, {Manoel S.} and Pacca, {Igor G.} and Wilson Teixeira and Onstott, {Tullis C.} and Renne, {Paul R.}",

year = "1990",

month = nov,

doi = "10.1016/0031-0182(90)90136-U",

language = "English (US)",

volume = "80",

pages = "255--265",

journal = "Palaeogeography, Palaeoclimatology, Palaeoecology",

issn = "0031-0182",

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number = "3-4",

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Paleomagnetic evidence for the evolution of Meso- to Neo-proterozoic glaciogenic rocks in central-eastern Brazil. / D'Agrella-Filho, Manoel S.; Pacca, Igor G.; Teixeira, Wilson; Onstott, Tullis C.; Renne, Paul R.

In: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 80, No. 3-4, 11.1990, p. 255-265.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Paleomagnetic evidence for the evolution of Meso- to Neo-proterozoic glaciogenic rocks in central-eastern Brazil

AU - D'Agrella-Filho, Manoel S.

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AU - Teixeira, Wilson

AU - Onstott, Tullis C.

AU - Renne, Paul R.

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AB - Paleomagnetic studies on basic dikes in the eastern São Francisco Craton which have isotopic ages of 1.0-1.1 Ga, define an apparent polar wander path for South America over this time interval. The data indicate that the São Francisco Craton was at paleolatitudes between 40° and 65° at the time of emplacement of these dikes. Neo-Proterozoic sedimentary glaciogenic rocks, the Macaúbas Group, Bebedouro Formation, Ibiá Formation and Carandai Formation, crop out in central-eastern Brazil. An age of about 1.0 Ga has been proposed for these glacial deposits. Paleogeographical reconstructions of South America show a continental movement coherent with paleoenvironmental models proposed for the Macaúbas Group and suggest that the glacial period may have occurred between 1.01 and 1.08 Ga.

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