Matches in SemOpenAlex for { <https://semopenalex.org/work/W1999096058> ?p ?o ?g. }
- W1999096058 endingPage "599" @default.
- W1999096058 startingPage "583" @default.
- W1999096058 abstract "Abstract Stable isotope (C and O) analyses were carried out on pedogenic nodules from carbonate-rich paleosols from early to middle Miocene strata in the Digne-Valensole foreland basin (southeast France). Paleosols from three sections corresponding to several paleoenvironments were sampled in order to investigate the local influence on the isotope record of the depositional sites: a deltaic floodplain (Châteauredon section, BCR), an inland floodplain (Saule Mort section, SM) and a shallow lacustrine system (Pont d’Aiguines section, PA). According to their biostratigraphy, they correspond to the same stratigraphic interval. Paleosols are regularly distributed along the three sections. They have developed either on floodplain alluvium or on palustrine carbonate mud. They are characterized by fersiallitic red soils with a calcic horizon, typical of a xeric soil moisture conditions with a marked seasonality. Carbonate nodules sampled at depths of 0.3 to 1 m below the preserved top soil are considered suitable for paleoecological interpretation. The cross-plot of the δ18O and δ13C values shows well-distributed data indicating that the pedogenic nodules were not affected by any major recrystallizations during burial. Their distribution indicates climate conditions similar to those of modern Mediterranean soils, characterized by carbonates precipitating from enriched meteoric water. A refined stratigraphic attribution of all the sections is based on the carbon isotope chemostratigraphy developed on the Châteauredon section by correlation with marine carbon isotope data [Bialkowski et al., 2006]. All sections extend from very early Aquitanian to middle Serravallian. No major hiatus was identified except for the one associated with a highly karstified surface in the Pont d’Aiguines section. The hiatus duration, estimated to 1 Ma, is interpreted as the record of some deformation at the front of the Digne thrust sheet during the Langhian. Most carbon isotope values are heavier than −8‰, suggesting a water-stressed C3 vegetation growing in a semi-arid environment. These semi-arid conditions are found in all sections during early Aquitanian and late Burdigalian to early Serravallian (Middle Miocene climatic optimum, MMCO), indicating similar environmental conditions between the coastal sites (BCR and PA sections) and the inland SM section. From middle Aquitanian to late Burdigalian, data from the coastal sites indicate typical C3 vegetation whereas xeric conditions characterized the inland site, suggesting distinct local ecosystems. The interpretation of the oxygen isotope record is more complex due to the different interactions during carbonate precipitation. In the early Aquitanian, the concomitant decrease in the pedogenic δ13C and δ18O isotope values is interpreted as a decrease of the water-stressed environmental conditions due either to a change in precipitation patterns resulting in low evaporation or to a fall in temperature. For the Langhian, the high δ13C values indicate xeric conditions throughout the area, and the high δ18O values at the coastal site suggest an increase in the combined effect of temperature and evaporation. Evidence of deformation related to the foreland basin evolution during this period is supported by the great differences in the oxygen isotope record of the different sections. The observed changes in the environmental conditions of the Digne-Valensole basin agree with the climate fluctuations identified on the basis of paleobotanical assemblages and mammal teeth isotope records from western European continental basins and of marine data. Our results show that a study of paleosols and the isotope composition of the pedogenic carbonate of the early to middle Miocene in the Digne-Valensole basin provide valuable information concerning the regional paleotopographic evolution of the foreland basin, as well as the distinct paleoecological systems that developed between the inland and the coastal sites and the regional paleoclimatic trends that correspond to those identified in other European continental basins. These reconstructions based on paleosols, the dry-end member of the climatic record, are complementary to those based on the paleofloras, mostly obtained from the wet-end member." @default.
- W1999096058 created "2016-06-24" @default.
- W1999096058 creator A5011459833 @default.
- W1999096058 creator A5021539940 @default.
- W1999096058 creator A5074313837 @default.
- W1999096058 creator A5090257954 @default.
- W1999096058 date "2013-11-01" @default.
- W1999096058 modified "2023-09-26" @default.
- W1999096058 title "Paleoenvironnement and paleoclimate reconstruction for the early to middle Miocene from stable isotopes in pedogenic carbonates (Digne-Valensole basin, southeastern France)" @default.
- W1999096058 cites W1569002524 @default.
- W1999096058 cites W1964616350 @default.
- W1999096058 cites W1965566911 @default.
- W1999096058 cites W1966547655 @default.
- W1999096058 cites W1966797702 @default.
- W1999096058 cites W1968522947 @default.
- W1999096058 cites W1971039936 @default.
- W1999096058 cites W1972383911 @default.
- W1999096058 cites W1973326864 @default.
- W1999096058 cites W1974966466 @default.
- W1999096058 cites W1977092507 @default.
- W1999096058 cites W1984868639 @default.
- W1999096058 cites W1986570030 @default.
- W1999096058 cites W1991358384 @default.
- W1999096058 cites W1992447258 @default.
- W1999096058 cites W1992839242 @default.
- W1999096058 cites W1993682354 @default.
- W1999096058 cites W1995168128 @default.
- W1999096058 cites W2000829620 @default.
- W1999096058 cites W2002034277 @default.
- W1999096058 cites W2003679151 @default.
- W1999096058 cites W2005435672 @default.
- W1999096058 cites W2010164667 @default.
- W1999096058 cites W2012512147 @default.
- W1999096058 cites W2019191987 @default.
- W1999096058 cites W2020602233 @default.
- W1999096058 cites W2023004847 @default.
- W1999096058 cites W2023069298 @default.
- W1999096058 cites W2023757162 @default.
- W1999096058 cites W2024540531 @default.
- W1999096058 cites W2025628144 @default.
- W1999096058 cites W2028095175 @default.
- W1999096058 cites W2032855124 @default.
- W1999096058 cites W2032903965 @default.
- W1999096058 cites W2034277323 @default.
- W1999096058 cites W2034422182 @default.
- W1999096058 cites W2039579770 @default.
- W1999096058 cites W2041708909 @default.
- W1999096058 cites W2062242054 @default.
- W1999096058 cites W2064470080 @default.
- W1999096058 cites W2064835792 @default.
- W1999096058 cites W2070195035 @default.
- W1999096058 cites W2072765930 @default.
- W1999096058 cites W2074719200 @default.
- W1999096058 cites W2075556231 @default.
- W1999096058 cites W2075877069 @default.
- W1999096058 cites W2077177705 @default.
- W1999096058 cites W2082540964 @default.
- W1999096058 cites W2084039640 @default.
- W1999096058 cites W2084579279 @default.
- W1999096058 cites W2085677570 @default.
- W1999096058 cites W2092885295 @default.
- W1999096058 cites W2098480433 @default.
- W1999096058 cites W2103551121 @default.
- W1999096058 cites W2108316127 @default.
- W1999096058 cites W2115575384 @default.
- W1999096058 cites W2116868398 @default.
- W1999096058 cites W2118597385 @default.
- W1999096058 cites W2119986621 @default.
- W1999096058 cites W2123085228 @default.
- W1999096058 cites W2123306717 @default.
- W1999096058 cites W2125872434 @default.
- W1999096058 cites W2144659916 @default.
- W1999096058 cites W2144898367 @default.
- W1999096058 cites W2147606015 @default.
- W1999096058 cites W2148333149 @default.
- W1999096058 cites W2151349623 @default.
- W1999096058 cites W2156765492 @default.
- W1999096058 cites W2158814629 @default.
- W1999096058 cites W2178590323 @default.
- W1999096058 cites W2317633520 @default.
- W1999096058 cites W2332436157 @default.
- W1999096058 cites W3023466951 @default.
- W1999096058 cites W4212792139 @default.
- W1999096058 cites W88383783 @default.
- W1999096058 doi "https://doi.org/10.2113/gssgfbull.184.6.583" @default.
- W1999096058 hasPublicationYear "2013" @default.
- W1999096058 type Work @default.
- W1999096058 sameAs 1999096058 @default.
- W1999096058 citedByCount "7" @default.
- W1999096058 countsByYear W19990960582018 @default.
- W1999096058 countsByYear W19990960582021 @default.
- W1999096058 countsByYear W19990960582022 @default.
- W1999096058 crossrefType "journal-article" @default.
- W1999096058 hasAuthorship W1999096058A5011459833 @default.
- W1999096058 hasAuthorship W1999096058A5021539940 @default.
- W1999096058 hasAuthorship W1999096058A5074313837 @default.
- W1999096058 hasAuthorship W1999096058A5090257954 @default.
- W1999096058 hasConcept C107872376 @default.