Palaeoenvironment and palaeoclimate of the Middle Miocene lake in the Steinheim basin, SW Germany: A reconstruction from C, O, and Sr isotopes of fossil remains

Tütken, Thomas; Vennemann, Torsten; Janz, Horst; Heizmann, Elmar P. J.

doi:10.1016/j.palaeo.2006.04.007

Cited by 157 publications

(101 citation statements)

References 89 publications

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“…Whereas that for rhino is (Tütken et al, 2006): Suarez et al, 2012). These observations generally support the view that global cooling increases latitudinal temperature and isotopic gradients, at least at mid-latitudes.…”

Section: Oxygen Isotopessupporting

confidence: 79%

Eocene–Oligocene latitudinal climate gradients in North America inferred from stable isotope ratios in perissodactyl tooth enamel

Zanazzi¹,

Judd²,

Fletcher³

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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This is an author-produced, peer-reviewed version of this article. The final, definitive version of this document can be found online at Palaeogeography, Palaeoclimatology, Palaeoecology, published 18 O variability is much larger than that recorded in the US Great Plains, suggesting that higher latitudes are more sensitive to major episodes of climate change with respect to temperature seasonality. Finally, our data indicate no major change in the Oligocene vs. Eocene latitudinal gradient in local water δ 18 O in North America, which suggests no change in mean annual temperature gradients across the transition. This result supports the hypothesis that ascribes the climate change of the transition with a drop in atmospheric pCO 2 because climate models show that this mechanism produces uniform cooling at mid-latitudes. This is an author-produced, peer-reviewed version of this article. The final, definitive version of this document can be found online at Palaeogeography, Palaeoclimatology, Palaeoecology, published by Elsevier. Copyright restrictions may apply.

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Section: Oxygen Isotopessupporting

confidence: 79%

Eocene–Oligocene latitudinal climate gradients in North America inferred from stable isotope ratios in perissodactyl tooth enamel

Zanazzi¹,

Judd²,

Fletcher³

et al. 2015

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…Many studies have used the stable isotope composition of ostracod fossils to reconstruct palaeoenvironmental conditions (e.g., von Grafenstein et al, 1999a;Ricketts et al, 2001;Schwalb, 2003;Belis and Ariztegui, 2004;Janz and Vennemann, 2005;Anadó n et al, 2006;Tü tken et al, 2006). The use of ostracod valves as a geochemical archive is based on the assumption that the organism crystallised its carapace in equilibrium with water.…”

Section: Introductionmentioning

confidence: 99%

Controls on ostracod valve geochemistry: Part 2. Carbon and oxygen isotope compositions

Decrouy

Vennemann

Ariztegui

2011

Geochimica et Cosmochimica Acta

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The stable carbon and oxygen isotope compositions of fossil ostracods are powerful tools to estimate past environmental and climatic conditions. The basis for such interpretations is that the calcite of the valves reflects the isotopic composition of water and its temperature of formation. However, calcite of ostracods is known not to form in isotopic equilibrium with water and different species may have different offsets from inorganic precipitates of calcite formed under the same conditions. To estimate the fractionation during ostracod valve calcification, the oxygen and carbon isotope compositions of 15 species living in Lake Geneva were related to their autoecology and the environmental parameters measured during their growth. The results indicate that: (1) Oxygen isotope fractionation is similar for all species of Candoninae with an enrichment in 18 O of more than 3& relative to equilibrium values for inorganic calcite. Oxygen isotope fractionation for Cytheroidea is less discriminative relative to the heavy oxygen, with enrichments in 18 O for these species of 1.7 to 2.3&. Oxygen isotope fractionations for Cyprididae are in-between those of Candoninae and Cytheroidea. The difference in oxygen isotope fractionation between ostracods and inorganic calcite has been interpreted as resulting from a vital effect. (2) Comparison with previous work suggests that oxygen isotope fractionation may depend on the total and relative ion content of water. (3) Carbon isotope compositions of ostracod valves are generally in equilibrium with DIC. The specimens' d 13 C values are mainly controlled by seasonal variations in d 13 C DIC of bottom water or variation thereof in sediment pore water. (4) Incomplete valve calcification has an effect on carbon and oxygen isotope compositions of ostracod valves. Preferential incorporation of CO 3 2À at the beginning of valve calcification may explain this effect. (5) Results presented here as well as results from synthetic carbonate growth indicate that different growth rates or low pH within the calcification site cannot be the cause of oxygen isotope 'vital effects' in ostracods. Two mechanisms that might enrich the 18 O of ostracod valves are deprotonation of HCO 3 À that may also contribute to valve calcification, and effects comparable to salt effects with high concentrations of Ca and/or Mg within the calcification site that may also cause a higher temperature dependency of oxygen isotope fractionation.

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“…Nevertheless, if treated correctly continental fossils can provide valuable information which is absent in the marine record, such as air temperature, humidity and precipitation sources. For this reason, isotopic studies on continental fossils are currently being vigorously pursued (e.g., Koch et al, 1995;Fricke et al, 1998;Grimes et al, 2003Grimes et al, , 2005Tütken et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

A multi-proxy geochemical investigation of the early Paleocene (Danian) continental palaeoclimate at the Fontllonga-3 site (South Central Pyrenees, Spain)

Domingo

López-Martı́nez

Soler-Gijón

et al. 2007

Palaeogeography, Palaeoclimatology, Palaeoecology

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Chronologically well constrained non-marine deposits across the Cretaceous-Tertiary boundary (KTb) are exceptionally rare. The Fontllonga section (Tremp Formation, South Central Pyrenees, Lleida, Spain) constitutes one of these rare global records. Stable isotope (δ 18 O CO3 and δ 13 C) analyses have been performed on the carbonate fraction of 29 samples from diverse skeletal micro-remains (charophyte gyrogonites, gastropod shells, ostracod valves and isolated skeletal remains of lepisosteids and pycnodonts) from the earliest Danian site, Fontllonga-3. A mean Ba/Ca water palaeotemperature of 28.0 ± 6.7°C has been obtained from the ganoine of 25 lepisosteid scales. This mean palaeotemperature is comparable with the temperature tolerance range for extant relatives of fossil osteoglossiform fish found at Fontllonga-3, which require a temperature range of 24°-35°C (mean annual temperature 27-30°C) to survive. Using the temperature range provided by the Ba/Ca palaeothermometer (21.3-34.7°C), it is possible to determine δ 18 O water values from the isotopic content of charophyte gyrogonites, gastropod shells, ostracod valves and fish remains (mean δ 18 O CO3 = − 5.00 ‰, σ = 0.21). δ 18 O water values of between − 4.01 and −0.95‰ (VSMOW) are calculated, which, when combined with (La/Yb) N versus (La/Sm) N plots, are in good agreement with the sedimentary interpretation of the site as an estuarine environment. Based upon a comparison with modern day meteorical conditions these isotopic values are relatively high for subtropical freshwaters, suggesting a low precipitation rate (amount effect, high evaporation rate and/or long residence time). When combined with other isotopic, palaeobotanical and mineralogical studies carried out in the Pyrenean and Tethys realms this first geochemical study of an early Paleocene site is consistent with there being a subtropical seasonally dry climate in the South Central Pyrenees at this time.

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Palaeoenvironment and palaeoclimate of the Middle Miocene lake in the Steinheim basin, SW Germany: A reconstruction from C, O, and Sr isotopes of fossil remains

Cited by 157 publications

References 89 publications

Eocene–Oligocene latitudinal climate gradients in North America inferred from stable isotope ratios in perissodactyl tooth enamel

Eocene–Oligocene latitudinal climate gradients in North America inferred from stable isotope ratios in perissodactyl tooth enamel

Controls on ostracod valve geochemistry: Part 2. Carbon and oxygen isotope compositions

A multi-proxy geochemical investigation of the early Paleocene (Danian) continental palaeoclimate at the Fontllonga-3 site (South Central Pyrenees, Spain)

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