Stratigraphic imprint of the Late Palaeozoic Ice Age in eastern Australia: a record of alternating glacial and nonglacial
climate regime
CHRISTOPHER R. FIELDING
TRACY D. FRANK
LAUREN P. BIRGENHEIER
MICHAEL C. RYGEL
ANDREW T. JONES
JOHN ROBERTS
10.6084/m9.figshare.3454496.v1
https://geolsoc.figshare.com/articles/dataset/Stratigraphic_imprint_of_the_Late_Palaeozoic_Ice_Age_in_eastern_Australia_a_record_of_alternating_glacial_and_nonglacial___climate_regime/3454496
<p>Stratigraphic and sedimentological data from New South Wales and Queensland, eastern Australia, indicate that the Late Palaeozoic
Ice Age comprised at least eight discrete glacial intervals (each 1–8 Ma in duration, here termed ‘glaciations’), separated
by nonglacial intervals of comparable duration. These events spanned an interval from mid-Carboniferous (<em>c</em>. 327 Ma) to the early Late Permian (<em>c</em>. 260 Ma), and illustrate a pattern of increasing climatic austerity and increasingly widespread glacial ice from initial
onset until an acme in the late Early Permian, followed by an opposite trend towards the final demise of glaciation in the
Late Permian. The alternating glacial–nonglacial motif suggests that the Late Palaeozoic Ice Age was considerably more dynamic
than previously thought. These patterns are remarkably consistent with recent interpretations of palaeofloral change, eustatic
sea-level fluctuations and CO<sub>2</sub>–climate–glaciation relationships for this interval of time. The detailed record of alternating glacial and nonglacial climate
mode disclosed herein may facilitate more closely resolved evaluations of stratigraphic records elsewhere, notably in far-field,
ice-distal, northern hemisphere successions.
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2016-06-21 12:09:55
nonglacial intervals
nonglacial climate mode
duration
glaciation
Permian
palaeofloral change
CO
pattern
327 Ma
stratigraphic records
hemisphere successions
Palaeozoic Ice Age
sedimentological data
nonglacial climate regime Stratigraphic
New South Wales
Geology