Carbon cycling across the southern margin of Laurentia during the Late Ordovician

Quinton, Page C.; Herrmann, Achim D.; Leslie, Stephen A.; MacLeod, Kenneth G.

doi:10.1016/j.palaeo.2015.08.020

Cited by 17 publications

(16 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All sampled sections span the Sandbian–Katian boundary and contain the Deicke and Millbrig K-bentonites (Haynes, 1994; Kolata, Huff & Bergström, 1996, 1998; Sell et al 2015). The conodont fauna has previously been described for the Tidwell Hollow, Red Mountain Expressway, Decorah, Rochester and Hagan sections (Hall, Bergström & Schmidt, 1986; Leslie, 1995, 2000; Quinton et al 2016 a ). In addition, these sections have been placed into the Midcontinent biostratigraphic framework (Leslie, 1995, 2000; Quinton et al 2016 a ).…”

Section: Methodsmentioning

confidence: 99%

“…The sections studied are the Tidwell Hollow and Red Mountain Expressway sections in Alabama (33.87806°N, 86.57555°W and 33.49598°N 86.78822°W), the Dickeyville section in Wisconsin (42.640586°N 90.57556°W), the Decorah section in Iowa (43.29021°N 91.76561°W), the Rochester section in Minnesota (43.97207°N 91.38358°W) and the Hagan section in Virginia (36.28333°N 86.69250°W). Stratigraphic details for the Alabama sections can be found in Quinton et al (2016 a ), for the Decorah section in Emerson et al (2005), and the Rochester and Hagan sections in Leslie (1995). All sampled sections span the Sandbian–Katian boundary and contain the Deicke and Millbrig K-bentonites (Haynes, 1994; Kolata, Huff & Bergström, 1996, 1998; Sell et al 2015).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Testing the early Late Ordovician cool-water hypothesis with oxygen isotopes from conodont apatite

et al. 2017

Self Cite

View full text Add to dashboard Cite

Latest Sandbian to early Katian sequences across Laurentia's epicontinental sea exhibit a transition from lithologies characterized as 'warm-water' carbonates to those characterized as 'coolwater'carbonates. This shift occurs across the regionally recognized M4/M5 sequence stratigraphic boundary and has been attributed to climatic cooling and glaciation, basin reorganization and upwelling of open ocean water, and/or increased water turbidity and terrigenous input associated with the Taconic tectophase. Documentation of oxygen isotopic trends across the M4/M5 and through bracketing strata provides a potential means of distinguishing among these alternative scenarios; however, oxygen isotopic records generated to date have failed to settle the debate. This lack of resolution is because δ 18 O records are open to multiple interpretations and potentially confounding factors related to local environmental conditions have not been tested by examining the critical interval in multiple areas and different depositional settings. To begin to address this shortcoming, we present new species-specific and mixed assemblage conodont δ 18 O values in samples spanning the M4/M5 boundary from the Upper Mississippi Valley, Alabama, and Virginia. The new results are combined with previous studies, providing a record of δ 18 O variability across SE Laurentia. The combined dataset allows us to test for regional trends at a resolution not previously available. Our results document a ∼1.5 ‰ decrease in values across Laurentia instead of increasing δ 18 O values across the M4/M5 as predicted in various 'cool-water' scenarios. In short, these results do not support a shift to 'cool-water' conditions as an explanation for changes in early Katian carbonates across the M4/M5.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Testing the early Late Ordovician cool-water hypothesis with oxygen isotopes from conodont apatite

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…The relative position of these beds to the stage boundary is not fully resolved and as a consequence during the last several years the boundary interval has been intensively discussed (e.g., Young et al, 2005;Ainsaar et al, 2010;Bergström et al, 2010;Bergström et al, 2011;Chen et al, 2013;Pouille et al, 2013;Carlucci et al, 2015;Sell et al, 2015;Taylor and Loch, 2015;Bergström et al, 2016;Kröger et al, 2016;Quinton et al, 2016).…”

Section: Correlation With Automated Rulesmentioning

confidence: 99%

“…3) The conflicting correlations of the GICE, in turn, are a consequence of the opinion expressed in Quinton et al (2016) to correlate the GICE with the P. tenuis and the underlying Plectodina undatus zone and its resulting time binning into Sa2 Stage Slice. In several other publications, the GICE is correlated with the earliest Katian (e.g., Goldman et al, 2007;Pouille et al, 2013).…”

Section: Correlation With Automated Rulesmentioning

confidence: 99%

RNames, a stratigraphical database designed for the statistical analysis of fossil occurrences – the Ordovician diversification as a case study

Kröger

Lintulaakso

2017

Palaeontologia Electronica

View full text Add to dashboard Cite

“…During the Late Ordovician the majority of Laurentia was situated at a low palaeolatitude in the southern hemisphere (Cocks & Torsvik, ). Much of central and eastern North America was inundated by a warm, shallow epicontinental sea (Herrmann & Haupt, ; Quinton et al., ). Upper Ordovician strata in southern Wisconsin and the surrounding area were deposited in subtidal environments ranging from inner ramp to outer ramp depositional settings (Choi & Simo, ; Choi, Simo, & Saylor, ; Witzke & Ludvigson, ).…”

Section: Geological Settingmentioning

confidence: 99%

In situ geochemistry of middle Ordovician dolomites of the upper Mississippi valley

Callen

Herrmann

2018

The Depositional Record

Self Cite

View full text Add to dashboard Cite

The dolomitization and diagenetic history of Ordovician carbonates of southern Wisconsin is complex. Previous studies attributed dolomitization to various diagenetic factors and environments. In this study, high‐resolution, in situ laser ablation inductively coupled mass spectrometry analysis of rare earth element patterns of dolomite was used to assess the diagenetic fluids responsible for dolomitization of the Ordovician Decorah Formation. Integrated geochemical data and petrographic evidence suggest that the dolostones are formed in two different diagenetic realms: shallow burial and hydrothermal. Shallow burial dolomites exhibit three distinct rare earth element patterns. Dolomite from the middle portion of the Guttenberg Member exhibits light rare earth element enrichment consistent with early burial dolomitization. Dolomites of the Carimona, Specht's Ferry and Lower Guttenberg members are often burrow associated and exhibit medium rare earth element enrichment associated with Fe‐oxide desorption in anoxic porewaters. Leaching of Mg from co‐occurring volcanic ash during alteration is a probable source that contributed to the dolomitization. Extensively dolomitized samples in the upper Guttenberg and Ion Member exhibit evidence of hydrothermal dolomitization. The relationship of these heavily dolomitized samples to interbedded limestones provides evidence for a recently proposed hydrothermal dolomitization model invoking pressure solution of calcite and precipitation of dolomite. These early burial and hydrothermal depositional models are consistent with models proposed for overlying and underlying Ordovician dolostones.

show abstract

Carbon cycling across the southern margin of Laurentia during the Late Ordovician

Cited by 17 publications

References 59 publications

Testing the early Late Ordovician cool-water hypothesis with oxygen isotopes from conodont apatite

Testing the early Late Ordovician cool-water hypothesis with oxygen isotopes from conodont apatite

RNames, a stratigraphical database designed for the statistical analysis of fossil occurrences – the Ordovician diversification as a case study

In situ geochemistry of middle Ordovician dolomites of the upper Mississippi valley

Contact Info

Product

Resources

About