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The Central Iapetus magmatic province : An updated review and link with the ca. 580 Ma Gaskiers glaciation

Youbi, Nasrrddine ; Ernst, Richard E. ; Söderlund, Ulf LU ; Boumehdi, Moulay Ahmed ; Lahna, Abdelhak Ait LU ; Gaeta Tassinari, Colombo ; Moume, Warda El and Bensalah, Mohamed Khalil (2020) In Special Paper of the Geological Society of America 544. p.35-66
Abstract

Large igneous provinces and associated silicic magmatism can have a significant global climatic effect, so we explored the relationship between the large igneous province record and the ca. 580 Ma Gaskiers glaciation. The late Ediacaran glaciation exists on at least 14 different paleocontinental blocks, and assuming synchroneity, this Gaskiers glaciation was likely of short duration, with estimates ranging from 1.6 m.y. to 340 k.y. The Central Iapetus magmatic province event found in Laurentia, Baltica, and West Africa consists of multiple pulses in the range 620–520 Ma, with the ca. 580 Ma pulse particularly well developed in North Africa. Based on the age matches of 580–570 Ma Central Iapetus magmatic province pulses and the Gaskiers... (More)

Large igneous provinces and associated silicic magmatism can have a significant global climatic effect, so we explored the relationship between the large igneous province record and the ca. 580 Ma Gaskiers glaciation. The late Ediacaran glaciation exists on at least 14 different paleocontinental blocks, and assuming synchroneity, this Gaskiers glaciation was likely of short duration, with estimates ranging from 1.6 m.y. to 340 k.y. The Central Iapetus magmatic province event found in Laurentia, Baltica, and West Africa consists of multiple pulses in the range 620–520 Ma, with the ca. 580 Ma pulse particularly well developed in North Africa. Based on the age matches of 580–570 Ma Central Iapetus magmatic province pulses and the Gaskiers glaciation, and taking into consideration that there is no robust evidence for a major meteorite impact at the time of the Gaskiers onset, we propose that: (1) the initial silicic ca. 580 Ma pulse of the Ouarzazate event (Anti-Atlas of Morocco) helped to trigger the Gaskiers glaciation, and (2) global warming associated with the subsequent ca. 579–570 Ma continental flood basalts, marking the second stage of the Ouarzazate event, helped to end the ice age.

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Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Geological Society of America Special Papers : Mass Extinctions, Volcanism, and Impacts: New Developments - Mass Extinctions, Volcanism, and Impacts: New Developments
series title
Special Paper of the Geological Society of America
volume
544
pages
32 pages
external identifiers
  • scopus:85090121683
ISSN
0072-1077
DOI
10.1130/2020.2544(02)
language
English
LU publication?
yes
id
8c7eb02a-80c7-469d-9bd9-b5bc35afef5a
date added to LUP
2020-09-24 15:00:08
date last changed
2020-12-29 01:38:08
@inbook{8c7eb02a-80c7-469d-9bd9-b5bc35afef5a,
  abstract     = {<p>Large igneous provinces and associated silicic magmatism can have a significant global climatic effect, so we explored the relationship between the large igneous province record and the ca. 580 Ma Gaskiers glaciation. The late Ediacaran glaciation exists on at least 14 different paleocontinental blocks, and assuming synchroneity, this Gaskiers glaciation was likely of short duration, with estimates ranging from 1.6 m.y. to 340 k.y. The Central Iapetus magmatic province event found in Laurentia, Baltica, and West Africa consists of multiple pulses in the range 620–520 Ma, with the ca. 580 Ma pulse particularly well developed in North Africa. Based on the age matches of 580–570 Ma Central Iapetus magmatic province pulses and the Gaskiers glaciation, and taking into consideration that there is no robust evidence for a major meteorite impact at the time of the Gaskiers onset, we propose that: (1) the initial silicic ca. 580 Ma pulse of the Ouarzazate event (Anti-Atlas of Morocco) helped to trigger the Gaskiers glaciation, and (2) global warming associated with the subsequent ca. 579–570 Ma continental flood basalts, marking the second stage of the Ouarzazate event, helped to end the ice age.</p>},
  author       = {Youbi, Nasrrddine and Ernst, Richard E. and Söderlund, Ulf and Boumehdi, Moulay Ahmed and Lahna, Abdelhak Ait and Gaeta Tassinari, Colombo and Moume, Warda El and Bensalah, Mohamed Khalil},
  booktitle    = {Geological Society of America Special Papers : Mass Extinctions, Volcanism, and Impacts: New Developments},
  issn         = {0072-1077},
  language     = {eng},
  month        = {03},
  pages        = {35--66},
  series       = {Special Paper of the Geological Society of America},
  title        = {The Central Iapetus magmatic province : An updated review and link with the ca. 580 Ma Gaskiers glaciation},
  url          = {http://dx.doi.org/10.1130/2020.2544(02)},
  doi          = {10.1130/2020.2544(02)},
  volume       = {544},
  year         = {2020},
}