High elevation of the ‘Nevadaplano’ during the Late Cretaceous

Snell, Kathryn E.; Koch, Paul L.; Druschke, Peter; Foreman, Brady Z.; Eiler, John M.

doi:10.1016/j.epsl.2013.10.046

Cited by 86 publications

(65 citation statements)

References 83 publications

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“…2 km (Snell et al 2014). Local water compositions were as low as 210%, so lower than our estimates of d 18 O w from pedogenic calcite, crocodiles, and turtles, but higher than many values estimated from dinosaurs.…”

Section: Implications For the Rise Of The Nevadaplano And Regional CLcontrasting

confidence: 78%

Multi-Taxa Isotopic Investigation of Paleohydrology In the Lower Cretaceous Cedar Mountain Formation, Eastern Utah, U.S.A.: Deciphering Effects Of the Nevadaplano Plateau On Regional Climate

Suarez¹,

González²,

Ludvigson³

et al. 2014

Journal of Sedimentary Research

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We investigate the regional climatic effects of the formation of the ''Nevadaplano'' plateau during the Sevier Orogeny in an overall warming world. Paleohydrology was reconstructed from 590 individual measurements of phosphate O isotopes in continental faunas of the Lower Cretaceous Cedar Mountain Formation, Utah, U.S.A. Semi-aquatic (turtles, crocodiles) and terrestrial (dinosaurs) taxa are compared to coeval pedogenic carbonates to interpret changing water sources over time. Samples were grouped into four stratigraphic faunas (lower Yellow Cat, upper 19.1 to 20.3%) values generally exceed those of semi-aquatic taxa. Using mass-balance equations for modern terrestrial animals adjusted for size and inferred dinosaur physiology, ingested water is calculated for the above dinosaur groups. On a member scale, when meteoric-water values are compared with calculated dinosaur drinking water, values are equal to or lighter than meteoric water for most herbivorous groups (as low as 215.5% for ornithischians) and equal to or heavier than meteoric water for most carnivorous groups (as high as 22.0% for allosauroids). Changes in d O-enriched water (e.g., up to an average of 22.0% from an allosauroid tooth) and extremely 18 O-depleted water (e.g., 215.5% for ornithischians) in the Ruby Ranch Member. By Mussentuchit-time, delivery of the Western Interior Seaway-dominated moisture to the region, despite continued rise of the Sevier Mountains.

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Section: Implications For the Rise Of The Nevadaplano And Regional CLcontrasting

confidence: 78%

Multi-Taxa Isotopic Investigation of Paleohydrology In the Lower Cretaceous Cedar Mountain Formation, Eastern Utah, U.S.A.: Deciphering Effects Of the Nevadaplano Plateau On Regional Climate

Suarez¹,

González²,

Ludvigson³

et al. 2014

Journal of Sedimentary Research

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“…1A), which represents part of the greater North American Cordilleran orogenic system. The Late Cretaceous-Paleogene hinterland of the Sevier thrust belt in Nevada and western Utah is the hypothesized site of a relict orogenic plateau, termed the "Nevadaplano" after comparison to the Andean Altiplano-Puna (DeCelles, 2004), which supported surface elevations of ~3 km (DeCelles and Coogan, 2006;Snell et al, 2014). Thermobarometric data from the RubyEast Humboldt core complex in northeastern Nevada and the Raft RiverGrouse Creek-Albion core complex in northern Utah (Fig.…”

Section: Introductionmentioning

confidence: 99%

Synorogenic extension localized by upper-crustal thickening: An example from the Late Cretaceous Nevadaplano

Long

Thomson

Reiners

et al. 2015

Geology

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Synconvergent extension within orogenic systems is often interpreted as gravitational spreading of thickened crust or as a response to thrust belt dynamics. However, the processes that spatially localize extension during orogenesis are not fully understood. Here, a case study from the United States Cordillera demonstrates that localized upper-crustal thickening can exert a first-order control on the spatial location of synorogenic extension. The Eureka culmination, a 20-km-wide, north-trending anticline with 4.5 km of structural relief in the hinterland plateau of the Sevier orogenic belt (or "Nevadaplano") in eastern Nevada was deformed by two sets of north-striking normal faults that pre-date late Eocene volcanism. (U-Th)/He and fission-track thermochronology data collected from Paleozoic quartzite in the footwalls of two normal faults demonstrate rapid (10 °C/m.y.), Late Cretaceous to Paleocene (75-60 Ma) cooling, which we interpret as tectonic exhumation during extension, and which was concurrent with late-stage shortening in the frontal Sevier thrust belt. This example illustrates that structural and topographic relief generated within zones of localized uppercrustal thickening can spatially focus extension during orogenesis, and adds to a growing body of evidence that Late CretaceousPaleocene extension in the Nevadaplano occurred at both mid-and upper-crustal levels.

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“…The models of Sewall and Fricke (2013) do not address this possibility, rather as they maintain a similar elevation profile to the Sevier Orogenic Belt, though feasibly the shift in isotopic values could be achieved by changing the elevation profile without increasing the height of the highest peaks (Dutton et al, 2005). These findings are consistent with recent clumped isotope thermometry work that indicates high (~2e3 km) elevations in the Sevier orogenic belt in the Late Cretaceous (Snell et al, 2014) and the continued connection between isotopic patterns and the evolving hinterland (Suarez et al, 2014). When considered in isolation the soil-river isotopic offset cannot determine the degree of seasonality in rainfall.…”

Section: Paleoclimate and Paleoelevationmentioning

confidence: 53%

“…This is clearly not the case given the variation in isotopic values observed, and argues for primacy of the pedogenic nodules. Finally, clumped isotope thermometry of other Late Cretaceous pedogenic nodules in Utah display similar d 18 O and d 13 C values, and record independent temperature estimates consistent with earth surface conditions rather than burial temperatures (Snell et al, 2014).…”

Section: Diagenesismentioning

confidence: 75%

Stable isotopic insights into paleoclimatic conditions and alluvial depositional processes in the Kaiparowits Formation (Campanian, south-central Utah, U.S.A.)

Foreman

Roberts

Tapanila

et al. 2015

Cretaceous Research

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High elevation of the ‘Nevadaplano’ during the Late Cretaceous

Cited by 86 publications

References 83 publications

Multi-Taxa Isotopic Investigation of Paleohydrology In the Lower Cretaceous Cedar Mountain Formation, Eastern Utah, U.S.A.: Deciphering Effects Of the Nevadaplano Plateau On Regional Climate

Multi-Taxa Isotopic Investigation of Paleohydrology In the Lower Cretaceous Cedar Mountain Formation, Eastern Utah, U.S.A.: Deciphering Effects Of the Nevadaplano Plateau On Regional Climate

Synorogenic extension localized by upper-crustal thickening: An example from the Late Cretaceous Nevadaplano

Stable isotopic insights into paleoclimatic conditions and alluvial depositional processes in the Kaiparowits Formation (Campanian, south-central Utah, U.S.A.)

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