Late Quaternary chronostratigraphic framework of terraces and alluvium along the lower Ohio River, southwestern Indiana and western Kentucky, USA

Counts, Ronald C.; Murari, Madhav K.; Owen, Lewis A.; Mahan, Shannon A.; Greenan, Michele

doi:10.1016/j.quascirev.2014.11.011

Cited by 25 publications

(18 citation statements)

References 64 publications

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“…200 ka (e.g. Rowland et al, 2005;Rittenour et al, 2007;Wood et al, 2010;Counts et al, 2015). OSL dating offers the only option to accurately date Prairie Allogroup deposits, in which organic material (if any) is too old (Rittenour et al, 2007;.…”

Section: Osl Datingmentioning

confidence: 99%

Mechanisms of late Quaternary fault throw‐rate variability along the north central Gulf of Mexico coast: implications for coastal subsidence

et al. 2016

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Quaternary sea‐level cycles have caused dramatic depocentre shifts near the mouths of major rivers. The effects of these shifts on fault activity in passive margin settings is poorly known, as no studies have constrained passive margin fault throw‐rate variability over 103 to 105 year time scales. Here we present 11 mean throw rates for the Tepetate–Baton Rouge fault zone along the northern Gulf of Mexico coast in southern Louisiana. These data were obtained by optically stimulated luminescence dating over time scales spanning the last interglacial to the late Holocene. The mean throw rate is ca. 0.22 mm year−1 during the late Holocene, ca. 0.03 mm year−1 during the last glacial and at least 0.07 mm year−1 during the last interglacial. Throw rates averaged over the late Pleistocene to present are spatially uniform within our study area. The temporal variability in throw rates suggests that shifts of the Mississippi River depocentre relative to this fault zone, driven by Quaternary sea‐level cycles, may have imposed a significant control on fault activity. The late Holocene throw rate is at least in the order of magnitude smaller than the rates of land‐surface subsidence in the Mississippi Delta, indicating that this fault zone is not a dominant contributor to subsidence in this region.

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Section: Osl Datingmentioning

confidence: 99%

Mechanisms of late Quaternary fault throw‐rate variability along the north central Gulf of Mexico coast: implications for coastal subsidence

et al. 2016

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“…A fluvial terrace is an abandoned floodplain currently separated from the modern floodplain, or from a lower fluvial terrace, by a steeper slope, or scarp. Valleys often contain flights of multiple terraces that record the response of the fluvial system to environmental change in the watershed (Merritts et al, 1994;Blum and T€ ornqvist, 2000;Gibbard and Lewin, 2009;Pan et al, 2003Pan et al, , 2009Bridgland and Westaway, 2014;Counts et al, 2015;Bridgland et al, 2017;Gao et al, 2017;Silva et al, 2017). Fluvial systems evolve under forcing factors such as the topographic and lithological attributes of watersheds, climatic change (which affects the ratio of water and sediment inputs from the slope system, and thus stream/ resisting power) and base-level changes d whether driven by tectonics or eustasy (Leopold et al, 1964;Schumm, 1969Schumm, , 19772007;Bull, 1991).…”

Section: Introductionmentioning

confidence: 99%

Terrestrial 10Be and electron spin resonance dating of fluvial terraces quantifies quaternary tectonic uplift gradients in the eastern Pyrenees

Delmas

Calvet

Gunnell

et al. 2018

Quaternary Science Reviews

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The 120 km-longTêt River flows out of the Pyrenees to the Mediterranean. By displaying a mappable sequence of Quaternary alluvial units between the Pleistocene frontal moraines of the high range and the offshore sedimentary depocentres, its 1400 km 2 watershed is well suited to quantifying gradients of topographic uplift. Five main generations of terrace treads had previously been inferred from constrasts in regolith weathering features, but here we present the first radiometric age constraints based on 15 ESR sediment burial ages covering the full sequence, and 3 vertical TCN age profiles restricted to three midsequence terraces. Analytically robust results were obtained for the oldest and uppermost terrace T5 (ESR age: 1099 ± 179 ka), for T3b (ESR age: 374 ± 47 ka,~MIS 10), and for T2 (ESR age: 174 ± 44 ka,~MIS 6). These results are consistent with the contrasts in weathering grade of the deposits. The TCN profiles only yielded minimum exposure ages but provided precise post-depositional denudation rates for the fluvial terrace treads. The land-to-sea geometry of the chronosequence also provided clues about valley incision rates in response to topographic uplift during the last~1 Ma. Based on a critical review of similar data obtained for other Mediterranean and Atlantic watersheds in the Pyrenees, the full regional correlation reveals that post-orogenic topographic uplift was substantial and relatively uniform throughout the entire mountain range. Patterns and magnitudes suggest a shared, probably subcrustal driving mechanism of Neogene and Quaternary mountain growth, with only subsidiary influence from isostasy, and climatic forcing.

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“…Less is known about the 4-5 ka period, which may herald dramatic changes in global hydrology with lasting aridfication of East and North Africa (e.g., Forman et al, 2014;Bloszies et al, 2015) and possible desertification in eastern China (e.g., Yang et al, 2015). North American research on fluvial systems document an episode of incision, 3.5-6 ka, a possible hydrologic response to episodes of mid-Holocene drought (Counts et al, 2015) or a more complex hydrologic response involving sediment supply and changes in climate (Springer et al, 2009;Stinchcomb et al, 2012). Refining the timing and spatial extent of this incision could yield new insights into how drainage basins respond to abrupt climate change.…”

Section: Abrupt Climate and Environmental Changementioning

confidence: 99%

Views on grand research challenges for Quaternary geology, geomorphology and environments

Forman

Stinchcomb

2015

Front. Earth Sci.

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Late Quaternary chronostratigraphic framework of terraces and alluvium along the lower Ohio River, southwestern Indiana and western Kentucky, USA

Cited by 25 publications

References 64 publications

Mechanisms of late Quaternary fault throw‐rate variability along the north central Gulf of Mexico coast: implications for coastal subsidence

Mechanisms of late Quaternary fault throw‐rate variability along the north central Gulf of Mexico coast: implications for coastal subsidence

Terrestrial 10Be and electron spin resonance dating of fluvial terraces quantifies quaternary tectonic uplift gradients in the eastern Pyrenees

Views on grand research challenges for Quaternary geology, geomorphology and environments

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