New U–PB baddeleyite ages of mafic dyke swarms of the west African and amazonian cratons: Implication for their configuration in supercontinents through time

L. Baratoux, U. Söderlund, R. E. Ernst, E. de Roever, M. W. Jessell, S. Kamo, S. Naba, S. Perrouty, V. Metelka, D. Yatte, M. Grenholm, D. P. Diallo, P. M. Ndiaye, E. Dioh, C. Cournède, M. Benoit, D. Baratoux, N. Youbi, S. Rousse, A. Bendaoud

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

Abstract

Eight different generations of dolerite dykes crosscutting the Paleoproterozoic basement in West Africa and one in South America were dated using the high precision U–Pb TIMS method on baddeleyite. Some of the individual dykes reach over 300 km in length and they are considered parts of much larger systems of mafic dyke swarms representing the plumbing systems for large igneous provinces (LIPs). The new U–Pb ages obtained for the investigated swarms in the southern West African Craton (WAC) are the following (oldest to youngest): 1791 ± 3 Ma for the N010° Libiri swarm, 1764 ± 4 Ma for the N035° Kédougou swarm, 1575 ± 5 for the N100° Korsimoro swarm, ~1525–1529 Ma for the N130° Essakane swarm, 1521 ± 3 Ma for the N90° Sambarabougou swarm, 915 ± 7 Ma for the N070° Oda swarm, 867 ± 16 Ma for the N355° Manso swarm, 202 ± 5 Ma and 198 ± 16 Ma for the N040° Hounde swarm, and 200 ± 3 Ma for the sills in the Taoudeni basin. The last ones are related to the Central Atlantic Magmatic Province (CAMP) event. The Hounde swarm is oblique to the dominant radiating CAMP swarm and may be linked with the similar-trending elongate Kakoulima intrusion in Guinea. In addition, the N150° Käyser swarm (Amazonian craton, South America) is dated at 1528 ± 2 Ma, providing a robust match with the Essakane swarm in a standard Amazonia-West African craton reconstruction, and resulting in a combined linear swarm >1500 km by >1500 km in extent. The Precambrian LIP barcode ages of c. 1790, 1765–1750, 1575, 1520, 915. 870 Ma for the WAC are compared with the global LIP record to identify possible matches on other crustal blocks, with reconstruction implications. These results contribute to the refinement of the magmatic ‘barcode’ for the West African and Amazonian cratons, representing the first steps towards plausible global paleogeographic reconstructions involving the West African and Amazonian cratons.

Original languageEnglish
Title of host publicationDyke Swarms of the World: A Modern Perspective
EditorsRajesh K. Srivastava, Richard E. Ernst, Peng Peng
PublisherSpringer
Pages263-314
Number of pages52
ISBN (Electronic)9789811316661
ISBN (Print)9789811316654
DOIs
Publication statusPublished - 2019

Publication series

NameSpringer Geology
ISSN (Print)2197-9545
ISSN (Electronic)2197-9553

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baddeleyite
dike swarm
supercontinent
craton
large igneous province
diabase
sill
Precambrian
basin

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Baratoux, L., Söderlund, U., Ernst, R. E., de Roever, E., Jessell, M. W., Kamo, S., ... Bendaoud, A. (2019). New U–PB baddeleyite ages of mafic dyke swarms of the west African and amazonian cratons: Implication for their configuration in supercontinents through time. In R. K. Srivastava, R. E. Ernst, & P. Peng (Eds.), Dyke Swarms of the World: A Modern Perspective (pp. 263-314). (Springer Geology). Springer. https://doi.org/10.1007/978-981-13-1666-1_7
Baratoux, L. ; Söderlund, U. ; Ernst, R. E. ; de Roever, E. ; Jessell, M. W. ; Kamo, S. ; Naba, S. ; Perrouty, S. ; Metelka, V. ; Yatte, D. ; Grenholm, M. ; Diallo, D. P. ; Ndiaye, P. M. ; Dioh, E. ; Cournède, C. ; Benoit, M. ; Baratoux, D. ; Youbi, N. ; Rousse, S. ; Bendaoud, A. / New U–PB baddeleyite ages of mafic dyke swarms of the west African and amazonian cratons : Implication for their configuration in supercontinents through time. Dyke Swarms of the World: A Modern Perspective. editor / Rajesh K. Srivastava ; Richard E. Ernst ; Peng Peng. Springer, 2019. pp. 263-314 (Springer Geology).
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title = "New U–PB baddeleyite ages of mafic dyke swarms of the west African and amazonian cratons: Implication for their configuration in supercontinents through time",
abstract = "Eight different generations of dolerite dykes crosscutting the Paleoproterozoic basement in West Africa and one in South America were dated using the high precision U–Pb TIMS method on baddeleyite. Some of the individual dykes reach over 300{\^A} km in length and they are considered parts of much larger systems of mafic dyke swarms representing the plumbing systems for large igneous provinces (LIPs). The new U–Pb ages obtained for the investigated swarms in the southern West African Craton (WAC) are the following (oldest to youngest): 1791 ± 3{\^A} Ma for the N010° Libiri swarm, 1764 ± 4{\^A} Ma for the N035° K{\'e}dougou swarm, 1575 ± 5 for the N100° Korsimoro swarm, ~1525–1529{\^A} Ma for the N130° Essakane swarm, 1521 ± 3{\^A} Ma for the N90° Sambarabougou swarm, 915 ± 7{\^A} Ma for the N070° Oda swarm, 867 ± 16{\^A} Ma for the N355° Manso swarm, 202 ± 5{\^A} Ma and 198 ± 16{\^A} Ma for the N040° Hounde swarm, and 200 ± 3{\^A} Ma for the sills in the Taoudeni basin. The last ones are related to the Central Atlantic Magmatic Province (CAMP) event. The Hounde swarm is oblique to the dominant radiating CAMP swarm and may be linked with the similar-trending elongate Kakoulima intrusion{\^A} in Guinea. In addition, the N150° K{\"a}yser swarm (Amazonian craton, South America) is dated at 1528 ± 2{\^A} Ma, providing a robust match with the Essakane swarm in a standard Amazonia-West African craton reconstruction, and resulting in a combined linear swarm >1500{\^A} km by >1500{\^A} km in extent. The Precambrian LIP barcode ages of c. 1790, 1765–1750, 1575, 1520, 915. 870{\^A} Ma for the WAC are compared with the global LIP record to identify possible matches on other crustal blocks, with reconstruction implications. These results contribute to the refinement of the magmatic ‘barcode’ for the West African and Amazonian cratons, representing the first steps towards plausible global paleogeographic reconstructions involving the West African and Amazonian cratons.",
author = "L. Baratoux and U. S{\"o}derlund and Ernst, {R. E.} and {de Roever}, E. and Jessell, {M. W.} and S. Kamo and S. Naba and S. Perrouty and V. Metelka and D. Yatte and M. Grenholm and Diallo, {D. P.} and Ndiaye, {P. M.} and E. Dioh and C. Courn{\`e}de and M. Benoit and D. Baratoux and N. Youbi and S. Rousse and A. Bendaoud",
year = "2019",
doi = "10.1007/978-981-13-1666-1_7",
language = "English",
isbn = "9789811316654",
series = "Springer Geology",
publisher = "Springer",
pages = "263--314",
editor = "Srivastava, {Rajesh K.} and Ernst, {Richard E.} and Peng Peng",
booktitle = "Dyke Swarms of the World: A Modern Perspective",

}

Baratoux, L, Söderlund, U, Ernst, RE, de Roever, E, Jessell, MW, Kamo, S, Naba, S, Perrouty, S, Metelka, V, Yatte, D, Grenholm, M, Diallo, DP, Ndiaye, PM, Dioh, E, Cournède, C, Benoit, M, Baratoux, D, Youbi, N, Rousse, S & Bendaoud, A 2019, New U–PB baddeleyite ages of mafic dyke swarms of the west African and amazonian cratons: Implication for their configuration in supercontinents through time. in RK Srivastava, RE Ernst & P Peng (eds), Dyke Swarms of the World: A Modern Perspective. Springer Geology, Springer, pp. 263-314. https://doi.org/10.1007/978-981-13-1666-1_7

New U–PB baddeleyite ages of mafic dyke swarms of the west African and amazonian cratons : Implication for their configuration in supercontinents through time. / Baratoux, L.; Söderlund, U.; Ernst, R. E.; de Roever, E.; Jessell, M. W.; Kamo, S.; Naba, S.; Perrouty, S.; Metelka, V.; Yatte, D.; Grenholm, M.; Diallo, D. P.; Ndiaye, P. M.; Dioh, E.; Cournède, C.; Benoit, M.; Baratoux, D.; Youbi, N.; Rousse, S.; Bendaoud, A.

Dyke Swarms of the World: A Modern Perspective. ed. / Rajesh K. Srivastava; Richard E. Ernst; Peng Peng. Springer, 2019. p. 263-314 (Springer Geology).

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

TY - CHAP

T1 - New U–PB baddeleyite ages of mafic dyke swarms of the west African and amazonian cratons

T2 - Implication for their configuration in supercontinents through time

AU - Baratoux, L.

AU - Söderlund, U.

AU - Ernst, R. E.

AU - de Roever, E.

AU - Jessell, M. W.

AU - Kamo, S.

AU - Naba, S.

AU - Perrouty, S.

AU - Metelka, V.

AU - Yatte, D.

AU - Grenholm, M.

AU - Diallo, D. P.

AU - Ndiaye, P. M.

AU - Dioh, E.

AU - Cournède, C.

AU - Benoit, M.

AU - Baratoux, D.

AU - Youbi, N.

AU - Rousse, S.

AU - Bendaoud, A.

PY - 2019

Y1 - 2019

N2 - Eight different generations of dolerite dykes crosscutting the Paleoproterozoic basement in West Africa and one in South America were dated using the high precision U–Pb TIMS method on baddeleyite. Some of the individual dykes reach over 300 km in length and they are considered parts of much larger systems of mafic dyke swarms representing the plumbing systems for large igneous provinces (LIPs). The new U–Pb ages obtained for the investigated swarms in the southern West African Craton (WAC) are the following (oldest to youngest): 1791 ± 3 Ma for the N010° Libiri swarm, 1764 ± 4 Ma for the N035° Kédougou swarm, 1575 ± 5 for the N100° Korsimoro swarm, ~1525–1529 Ma for the N130° Essakane swarm, 1521 ± 3 Ma for the N90° Sambarabougou swarm, 915 ± 7 Ma for the N070° Oda swarm, 867 ± 16 Ma for the N355° Manso swarm, 202 ± 5 Ma and 198 ± 16 Ma for the N040° Hounde swarm, and 200 ± 3 Ma for the sills in the Taoudeni basin. The last ones are related to the Central Atlantic Magmatic Province (CAMP) event. The Hounde swarm is oblique to the dominant radiating CAMP swarm and may be linked with the similar-trending elongate Kakoulima intrusion in Guinea. In addition, the N150° Käyser swarm (Amazonian craton, South America) is dated at 1528 ± 2 Ma, providing a robust match with the Essakane swarm in a standard Amazonia-West African craton reconstruction, and resulting in a combined linear swarm >1500 km by >1500 km in extent. The Precambrian LIP barcode ages of c. 1790, 1765–1750, 1575, 1520, 915. 870 Ma for the WAC are compared with the global LIP record to identify possible matches on other crustal blocks, with reconstruction implications. These results contribute to the refinement of the magmatic ‘barcode’ for the West African and Amazonian cratons, representing the first steps towards plausible global paleogeographic reconstructions involving the West African and Amazonian cratons.

AB - Eight different generations of dolerite dykes crosscutting the Paleoproterozoic basement in West Africa and one in South America were dated using the high precision U–Pb TIMS method on baddeleyite. Some of the individual dykes reach over 300 km in length and they are considered parts of much larger systems of mafic dyke swarms representing the plumbing systems for large igneous provinces (LIPs). The new U–Pb ages obtained for the investigated swarms in the southern West African Craton (WAC) are the following (oldest to youngest): 1791 ± 3 Ma for the N010° Libiri swarm, 1764 ± 4 Ma for the N035° Kédougou swarm, 1575 ± 5 for the N100° Korsimoro swarm, ~1525–1529 Ma for the N130° Essakane swarm, 1521 ± 3 Ma for the N90° Sambarabougou swarm, 915 ± 7 Ma for the N070° Oda swarm, 867 ± 16 Ma for the N355° Manso swarm, 202 ± 5 Ma and 198 ± 16 Ma for the N040° Hounde swarm, and 200 ± 3 Ma for the sills in the Taoudeni basin. The last ones are related to the Central Atlantic Magmatic Province (CAMP) event. The Hounde swarm is oblique to the dominant radiating CAMP swarm and may be linked with the similar-trending elongate Kakoulima intrusion in Guinea. In addition, the N150° Käyser swarm (Amazonian craton, South America) is dated at 1528 ± 2 Ma, providing a robust match with the Essakane swarm in a standard Amazonia-West African craton reconstruction, and resulting in a combined linear swarm >1500 km by >1500 km in extent. The Precambrian LIP barcode ages of c. 1790, 1765–1750, 1575, 1520, 915. 870 Ma for the WAC are compared with the global LIP record to identify possible matches on other crustal blocks, with reconstruction implications. These results contribute to the refinement of the magmatic ‘barcode’ for the West African and Amazonian cratons, representing the first steps towards plausible global paleogeographic reconstructions involving the West African and Amazonian cratons.

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Baratoux L, Söderlund U, Ernst RE, de Roever E, Jessell MW, Kamo S et al. New U–PB baddeleyite ages of mafic dyke swarms of the west African and amazonian cratons: Implication for their configuration in supercontinents through time. In Srivastava RK, Ernst RE, Peng P, editors, Dyke Swarms of the World: A Modern Perspective. Springer. 2019. p. 263-314. (Springer Geology). https://doi.org/10.1007/978-981-13-1666-1_7