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Duration and nature of the end-Cryogenian (Marinoan) glaciation
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dc.contributor.author | Prave, Anthony Robert | |
dc.contributor.author | Condon, Daniel J. | |
dc.contributor.author | Hoffmann, Karl Heinz | |
dc.contributor.author | Tapster, Simon | |
dc.contributor.author | Fallick, Anthony Edward | |
dc.date.accessioned | 2017-06-01T23:33:54Z | |
dc.date.available | 2017-06-01T23:33:54Z | |
dc.date.issued | 2016-08-01 | |
dc.identifier | 243472995 | |
dc.identifier | 57e519fa-5159-436a-9987-77a933de155a | |
dc.identifier | 84980327271 | |
dc.identifier | 000380121500010 | |
dc.identifier.citation | Prave , A R , Condon , D J , Hoffmann , K H , Tapster , S & Fallick , A E 2016 , ' Duration and nature of the end-Cryogenian (Marinoan) glaciation ' , Geology , vol. 44 , no. 8 , pp. 631-634 . https://doi.org/10.1130/G38089.1 | en |
dc.identifier.issn | 0091-7613 | |
dc.identifier.other | ORCID: /0000-0002-4614-3774/work/64033674 | |
dc.identifier.uri | https://hdl.handle.net/10023/10898 | |
dc.description | This work was supported by NERC Isotope Geoscience Facility Steering Committee grant IP-1462-0514. | en |
dc.description.abstract | The end-Cryogenian glaciation (Marinoan) is portrayed commonly as the archetype of snowball Earth, yet its duration and character remain uncertain. Here we report U-Pb zircon ages for two ash beds from widely separated localities of the Marinoan-equivalent Ghaub Formation in Namibia: 639.29 ± 0.26 Ma and 635.21 ± 0.59 Ma. These findings verify, for the first time, the key prediction of the snowball Earth hypothesis for the Marinoan glaciation, i.e., longevity, with a duration of ≥4 m.y. They also show that the nonglacial interlude of Cryogenian time spanned 20 m.y. or less and that glacigenic erosion and sedimentation, and at least intermittent open-water conditions, occurred 4 m.y. prior to termination of the Marinoan glaciation. | |
dc.format.extent | 4 | |
dc.format.extent | 1011179 | |
dc.language.iso | eng | |
dc.relation.ispartof | Geology | en |
dc.subject | GE Environmental Sciences | en |
dc.subject | NDAS | en |
dc.subject | BDC | en |
dc.subject | R2C | en |
dc.subject.lcc | GE | en |
dc.title | Duration and nature of the end-Cryogenian (Marinoan) glaciation | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Earth & Environmental Sciences | en |
dc.contributor.institution | University of St Andrews. Marine Alliance for Science & Technology Scotland | en |
dc.contributor.institution | University of St Andrews. Scottish Oceans Institute | en |
dc.contributor.institution | University of St Andrews. St Andrews Sustainability Institute | en |
dc.contributor.institution | University of St Andrews. St Andrews Isotope Geochemistry | en |
dc.contributor.institution | University of St Andrews. Earth and Environmental Sciences | en |
dc.contributor.institution | University of St Andrews. School of Geography and Geosciences | en |
dc.identifier.doi | https://doi.org/10.1130/G38089.1 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2017-06-01 |
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