The onset of mid-Carboniferous glacio-eustasy: Sedimentologic and diagenetic constraints, Arrow Canyon, Nevada

Bishop, J. K.; Montañez, Isabel P.; Gulbranson, Erik L.; Brenckle, Paul L.

doi:10.1016/j.palaeo.2009.02.019

Cited by 86 publications

(68 citation statements)

References 54 publications

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“…This discrepancy arises because in many cratonic areas, the mid-Carboniferous boundary coincides with a subaerial exposure surface at which there was a lengthy hiatus. Our results are consistent with investigations of the mid-Carboniferous boundary in deeper shelf and basinal settings, such as the Arrow Canyon GSSP, where the transition was preserved by continuous sedimentation (Lane et al 1999;Richards et al 2002;Bishop et al 2009 and the references therein). The sealevel chart of Haq and Schutter (2008) correctly places the boundary within a depositional sequence.…”

Section: Discussionsupporting

confidence: 92%

Foraminiferal biostratigraphy and sequence stratigraphy across the mid-Carboniferous boundary in the Central Taurides, Turkey

Atakul‐Özdemir

Altıner

Özkan-Altıner

et al. 2011

Facies

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The Aladag Unit is one of the main tectonic units in the Tauride Belt, located in southern Turkey. It includes a continuous Paleozoic carbonate sequence encompassing the mid-Carboniferous boundary, with outcrops being especially well exposed in the Hadim region. The boundary succession lithology is mainly composed of carbonates with intercalated quartz arenitic sandstone layers. Based on foraminifers, four biostratigraphic zones have been defined in the interval from the Upper Serpukhovian to the Lower Bashkirian. These zones are, in ascending order: the Eostaffella ex gr. ikensis-E. postmosquensis Zone (Zapaltyubinsky Horizon, Upper Serpukhovian); the Plectostaffella jakhensis-P. bogdanovkensis Zone, and the Millerella marblensis Zone (Bogdanovsky Horizon, lower Bashkirian); and the Semistaffella sp. Zone (Syuransky Horizon, lower Bashkirian). The mid-Carboniferous boundary occurs between the Eostaffella ex gr. ikensis-E. postmosquensis Zone and the Plectostaffella jakhensis-P. bogdanovkensis Zone. Boundary beds are characterized by eight, repeatedly occurring microfacies types, namely: (1) coated crinoidal packstone; (2) coated bioclastic grainstone; (3) oolitic grainstone; (4) oolitic packstone-grainstone; (5) intraclastic grainstone; (6) mudstone-wackestone; (7) quartz-peloidal packstone; and 8) quartz arenitic sandstone. Based on microfacies stacking patterns, various types of shallowing-upward cycles have been recognized. Depositional sequences and sequence boundaries are correlatable with those described from North America and Russia and Carboniferous global sea-level curves. The duration of cycles has been estimated as 100 ky, suggesting that cycle periodicities correspond to the Milankovitch eccentricity band.

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Section: Discussionsupporting

confidence: 92%

Foraminiferal biostratigraphy and sequence stratigraphy across the mid-Carboniferous boundary in the Central Taurides, Turkey

Atakul‐Özdemir

Altıner

Özkan-Altıner

et al. 2011

Facies

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“…The third major positive excursion and relatively high δ 13 C values from late Visean to Serpukhovian coincide with the Lowstand System Tract (LST) deposits in South China, glacio-eustasy sequences in Nevada [46], and extensively distributed glacial deposits [7,9,18], marking the onset of Permo-Carboniferous Glacial Maximum.…”

Section: Discussionmentioning

confidence: 94%

Lower Carboniferous carbon isotope stratigraphy in South China: Implications for the Late Paleozoic glaciation

Qie

Zhang

et al. 2010

Sci. China Earth Sci.

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Studies on carbon isotopes of bulk carbonates from Longan and Baping sections of Lower Carboniferous in Guangxi of China show that the stable carbon isotope compositions in carbonate rocks of the isolated platform and deep slope facies were resistant to the influence of early meteoric diagenesis and late burial diagenesis. Three major positive carbon isotope excursions have been recognized in Lower Carboniferous in South China. The first major positive δ 13 C shift of 4.19‰ occurred in the middle part of Siphonodella isosticha-upper Siphonodella crenulata zone (Tournaisian); the second with an amplitude of 4.65‰ occurred near the Tournaisian/Visean boundary; and the third of 2.23‰ in the lower part of Gnathodus bollandensis zone. The three positive shifts of δ 13 C can be correlated with global carbon isotope excursions and are consistent with the fall in global sea level, indicating that abundant organic carbon burial, lowering of atmospheric CO 2 , and glaciation may have occurred during these time intervals. Carboniferous, glaciation, carbon isotope, Guangxi, South China Citation: Qie W K, Zhang X H, Du Y S, et al. Lower Carboniferous carbon isotope stratigraphy in South China: Implications for the Late Paleozoic glaciation.

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“…This was followed by an interval of intense drying and warming at tropical and paratropical latitudes (Cecil 2004). Ice reappeared in the middle Mississippian and continued into the Middle Permian Fielding et al 2008;Bishop et al 2009;Isbell et al 2012;Montañ ez and Poulsen 2013), a period of as much as 65 million years in duration, during which time moisture returned to the equatorial region. Figure 2 outlines the geological stratigraphic terms used in this article.…”

Section: The Late Paleozoic Ice Agementioning

confidence: 99%

Wetland-Dryland Vegetational Dynamics in the Pennsylvanian Ice Age Tropics

DiMichele¹

2014

International Journal of Plant Sciences

161

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Premise of research. The Late Paleozoic Ice Age was the last extensive pre-Pleistocene ice age. It includes many climate changes of different intensities, permitting examination of many and varied biotic responses. The tropical Pennsylvanian Subperiod, usually visualized as one vast wetland coal forest, in fact also was dominated, periodically, by seasonally dry vegetation that, in turn, covered most of the central and western Pangean supercontinent. Equatorial wetland and dryland biomes oscillated during single glacial-interglacial cycles. This recognition changes understanding of the Coal Age tropics; examination of their spatiotemporal patterns indicates that these vegetation types responded differently to global environmental disturbances and long-term trends and points to potentially different underlying controls on evolutionary histories of their component lineages.Methodology. This study is based on the published literature and on examination of geological exposures and fossil floras, mainly from North America but also from other parts of the world.Pivotal results. Wetlands and seasonally dry habitats were equally part of the Coal Age Pangean tropics. They dominated these landscapes at different times, under different climatic regimes. Wetland vegetation was likely forced into refugia during seasonally dry (subhumid to semiarid) parts of glacial-interglacial cycles; it reemerged/reassembled during wet (humid to perhumid) periods. Seasonally dry vegetation resided permanently in areas of western and central Pangea and in microhabitats within the Central Pangean Mountains. Both floras had lower biodiversity than modern floras in similar habitats. The wetland flora species pool was more phylogenetically disparate than any modern vegetation. In contrast, seasonally dry floras were dominated by seed plants. These biomes responded differently to acute environmental changes and chronic long-term aridification.Conclusions. From ecological or evolutionary perspectives, the present-day world is but one possibility. Lower-diversity worlds such as the late Paleozoic, with a rich spectrum of environmental variations, offer insights into relationships between organisms and environments that expand understanding of these phenomena and enlarge our sense of what is possible or probable as we look to the future.

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The onset of mid-Carboniferous glacio-eustasy: Sedimentologic and diagenetic constraints, Arrow Canyon, Nevada

Cited by 86 publications

References 54 publications

Foraminiferal biostratigraphy and sequence stratigraphy across the mid-Carboniferous boundary in the Central Taurides, Turkey

Foraminiferal biostratigraphy and sequence stratigraphy across the mid-Carboniferous boundary in the Central Taurides, Turkey

Lower Carboniferous carbon isotope stratigraphy in South China: Implications for the Late Paleozoic glaciation

Wetland-Dryland Vegetational Dynamics in the Pennsylvanian Ice Age Tropics

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