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Duration and nature of the end-Cryogenian (Marinoan) glaciation

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Duration and nature of the end-Cryogenian (Marinoan) glaciation. / Prave, Anthony Robert; Condon, Daniel J. ; Hoffmann, Karl Heinz; Tapster, Simon; Fallick, Anthony Edward.

In: Geology, Vol. 44, No. 8, 01.08.2016, p. 631-634.

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Prave, AR, Condon, DJ, Hoffmann, KH, Tapster, S & Fallick, AE 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

APA

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, 44(8), 631-634. https://doi.org/10.1130/G38089.1

Vancouver

Prave AR, Condon DJ, Hoffmann KH, Tapster S, Fallick AE. Duration and nature of the end-Cryogenian (Marinoan) glaciation. Geology. 2016 Aug 1;44(8):631-634. https://doi.org/10.1130/G38089.1

Author

Prave, Anthony Robert ; Condon, Daniel J. ; Hoffmann, Karl Heinz ; Tapster, Simon ; Fallick, Anthony Edward. / Duration and nature of the end-Cryogenian (Marinoan) glaciation. In: Geology. 2016 ; Vol. 44, No. 8. pp. 631-634.

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@article{57e519fa5159436a998777a933de155a,
title = "Duration and nature of the end-Cryogenian (Marinoan) glaciation",
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.",
author = "Prave, {Anthony Robert} and Condon, {Daniel J.} and Hoffmann, {Karl Heinz} and Simon Tapster and Fallick, {Anthony Edward}",
note = "This work was supported by NERC Isotope Geoscience Facility Steering Committee grant IP-1462-0514.",
year = "2016",
month = "8",
day = "1",
doi = "10.1130/G38089.1",
language = "English",
volume = "44",
pages = "631--634",
journal = "Geology",
issn = "0091-7613",
publisher = "GEOLOGICAL SOC AMER, INC",
number = "8",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Duration and nature of the end-Cryogenian (Marinoan) glaciation

AU - Prave, Anthony Robert

AU - Condon, Daniel J.

AU - Hoffmann, Karl Heinz

AU - Tapster, Simon

AU - Fallick, Anthony Edward

N1 - This work was supported by NERC Isotope Geoscience Facility Steering Committee grant IP-1462-0514.

PY - 2016/8/1

Y1 - 2016/8/1

N2 - 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.

AB - 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.

U2 - 10.1130/G38089.1

DO - 10.1130/G38089.1

M3 - Article

VL - 44

SP - 631

EP - 634

JO - Geology

JF - Geology

SN - 0091-7613

IS - 8

ER -

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