Extensive oxidative weathering in the aftermath of a late Neoproterozoic glaciation: Evidence from trace element and chromium isotope records in the Urucum district (Jacadigo Group) and Puga iron formations (Mato Grosso do Sul, Brazil)
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DOI: 10.1016/j.gr.2017.05.003
Abstract: Abstract The massive Fe and Mn deposits of the Urucum district (Banda Alta Formation) and the iron formations from Fazenda Sao Manoel (Puga Formation) in Mato Grosso do Sul, Brazil, are associated with glacigenic deposits… read more here.
Keywords: iron formations; late neoproterozoic; district; age ... See more keywords
Cryogenian glaciostatic and eustatic fluctuations and massive Marinoan-related deposition of Fe and Mn in the Urucum District, Brazil
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DOI: 10.1130/g49134.1
Abstract: Global Neoproterozoic glaciations are related to extreme environmental changes and the reprise of iron formation in the rock record. However, the lack of narrow age constraints on Cryogenian successions bearing iron-formation deposits prevents correlation and… read more here.
Keywords: district brazil; marinoan; urucum district; formation ... See more keywords