Secular changes in sedimentation systems and sequence stratigraphy

Show simple item record Eriksson, Kenneth A. Banerjee, Santanu Catuneanu, Octavian Corcoran, Patricia L. Eriksson, Patrick George Hiatt, Eric E. Laflamme, Marc Lenhardt, Nils Long, Darrel G.F. Miall, Andrew D. Mints, Michael V. Pufahl, Peir K. Sarkar, Subir Simpson, Edward L. Williams, George E. 2013-10-28T08:58:48Z 2013-10-28T08:58:48Z 2013-09
dc.description.abstract The ephemeral nature of most sedimentation processes and the fragmentary character of the sedimentary record are of first-order importance. Despite a basic uniformity of external controls on sedimentation resulting inmarkedly similar lithologies, facies, facies associations and depositional elementswithin the rock record across time, there are a number of secular changes, particularly in rates and intensities of processes that resulted in contrasts between preserved Precambrian and Phanerozoic successions. Secular change encompassed (1) variations in mantle heat, rates of plate drift and of continental crustal growth, the gravitational effects of theMoon, and in rates ofweathering, erosion, transport, deposition and diagenesis; (2) a decreasing planetary rotation rate over time; (3) no vegetation in the Precambrian, but prolific microbial mats, with the opposite pertaining to the Phanerozoic; (4) the long-term evolution of the hydrosphere–atmosphere–biosphere system. A relatively abrupt and sharp turning point was reached in the Neoarchaean, with spikes inmantle plumeflux and tectonothermal activity and possibly concomitant onset of the supercontinent cycle. Substantial and irreversible change occurred subsequently in the Palaeoproterozoic, whereby the dramatic change from reducing to oxidizing volcanic gases ushered in change to an oxic environment, to be followed at ca. 2.4–2.3 Ga by the “Great Oxidation Event” (GOE); rise in atmospheric oxygen was accompanied by expansion of oxygenic photosynthesis in the cyanobacteria. A possible global tectono-thermal “slowdown” from ca. 2.45–2.2 Ga may have separated a preceding plate regime which interacted with a higher energymantle from a ca. 2.2–2.0 Ga Phanerozoic-style plate tectonic regime; the “slowdown” period also encompassed the first known global-scale glaciation and overlapped with the GOE.While large palaeodeserts emerged from ca. 2.0–1.8 Ga, possibly associatedwith the evolution of the supercontinent cycle, widespread euxinia by ca. 1.85 Ga ushered in the “boring billion” year period. A second time of significant and irreversible change, in the Neoproterozoic, saw a secondmajor oxidation event and several lowpalaeolatitude Cryogenian (740–630 Ma) glaciations. With the veracity of the “Snowball Earth”model for Neoproterozoic glaciation being under dispute, genesis of Pre-Ediacaran low-palaeolatitude glaciation remains enigmatic. Ediacaran (635–542 Ma) glaciation with a wide palaeolatitudinal range contrasts with the circum-polar nature of Phanerozoic glaciation. The observed change from low latitude to circum-polar glaciation parallels advent and diversification of the Metazoa and the Neoproterozoic oxygenation (ca. 580 Ma), andwas succeeded by the Ediacaran–Cambrian transition which ushered in biomineralization, with all its implications for the chemical sedimentary record. en_US
dc.description.librarian hb2013 en_US
dc.description.sponsorship National Geographic Society grant 6003-97: NSERC Discovery Grant and PetroCanada Young Innovator Award : University of Wisconsin-Oshkosh University Research Program : Smithsonian Institution Postdoctoral Fellowship and NASA National Astrobiology Institute : University of Pretoria Research Development Program (RDP) : National Research Foundation of South Africa. en_US
dc.description.uri en_US
dc.identifier.citation Eriksson, PG, Banerjee, S, Catuneanu, O, Corcoran, PL, Eriksson, KA, Hiatt, EE, Laflamme, M, Lenhardt, N, Long, DGF, Miall, AD, Mints, MV, Pufahl, PK, Sarkar, S, Simpson, EL & Williams, GE 2013, 'Secular changes in sedimentation systems and sequence stratigraphy', Gondwana Research, vol. 24, no. 2, pp. 468-489. en_US
dc.identifier.issn 1342-937X (print)
dc.identifier.other 10.1016/
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.rights © 2012 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Gondwana Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Gondwana Research, vol. 24, no. 2, 2013, doi : 10.1016/ en_US
dc.subject Fragmentary sedimentary record en_US
dc.subject Actualism en_US
dc.subject Secular change in rates and intensities of processes en_US
dc.subject Earth mechanics en_US
dc.subject Palaeoatmospheric evolution en_US
dc.subject Great oxidation events en_US
dc.subject Global magmatic slowdown en_US
dc.subject Glacial events en_US
dc.subject Biological evolution en_US
dc.subject Sequence stratigraphy en_US
dc.title Secular changes in sedimentation systems and sequence stratigraphy en_US
dc.type Postprint Article en_US

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