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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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North Africa
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Atlas Mountains
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Moroccan Atlas Mountains
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Anti-Atlas (3)
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Morocco
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Moroccan Atlas Mountains
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Anti-Atlas (3)
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West Africa (2)
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West African Craton (3)
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North America (1)
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elements, isotopes
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carbon
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organic carbon (1)
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fossils
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microfossils (1)
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geochronology methods
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paleomagnetism (1)
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U/Pb (2)
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geologic age
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Precambrian
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upper Precambrian
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Proterozoic
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Mesoproterozoic (1)
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Neoproterozoic
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Cryogenian (1)
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Ediacaran (1)
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Sturtian (1)
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Paleoproterozoic (2)
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igneous rocks
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igneous rocks
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volcanic rocks
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basalts
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flood basalts (1)
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minerals
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silicates
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orthosilicates
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nesosilicates
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zircon group
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zircon (2)
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Primary terms
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absolute age (2)
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Africa
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North Africa
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Atlas Mountains
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Moroccan Atlas Mountains
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Anti-Atlas (3)
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Morocco
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Moroccan Atlas Mountains
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Anti-Atlas (3)
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West Africa (2)
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West African Craton (3)
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carbon
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organic carbon (1)
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glacial geology (1)
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igneous rocks
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volcanic rocks
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basalts
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flood basalts (1)
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intrusions (2)
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North America (1)
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orogeny (1)
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paleoclimatology (1)
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paleogeography (3)
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paleomagnetism (1)
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plate tectonics (2)
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Precambrian
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upper Precambrian
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Proterozoic
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Mesoproterozoic (1)
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Neoproterozoic
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Cryogenian (1)
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Ediacaran (1)
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Sturtian (1)
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Paleoproterozoic (2)
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sedimentary rocks
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clastic rocks
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diamictite (1)
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tectonics (1)
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sedimentary rocks
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sedimentary rocks
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clastic rocks
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diamictite (1)
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Reorienting the West African craton in Paleoproterozoic–Mesoproterozoic supercontinent Nuna
Discussion on ‘From Pan-African transpression to Cadomian transtension at the West African margin: new U–Pb zircon ages from the Eastern Saghro Inlier (Anti-Atlas, Morocco)’ by Errami et al . 2020 ( SP 503, 209–233)
The Central Iapetus magmatic province: An updated review and link with the ca. 580 Ma Gaskiers glaciation
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 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.