Yingfeng Xu

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Stable isotope analyses of fossil teeth and other authigenic minerals have been used to reconstruct the paleoenvironment and paleoelevation of the Tibetan Plateau. The accuracy of such reconstructions is limited by the lack of a comprehensive modern comparative database from the region. We analyzed the carbon and oxygen isotopic compositions (δ 13 C and δ(More)
Keywords: stable isotopes fossils paleo-climate paleo-elevation Tibetan Plateau We report the results of a stable isotope study of a late Pliocene fauna recently discovered in the Kunlun Mountain Pass area (∼4700 m above sea level) on the northern Tibetan Plateau. The δ 13 C values of enamel samples from modern herbivores from the Kunlun Pass Basin range(More)
a r t i c l e i n f o Keywords: C4 plants stable isotopes fossil mammals Inner Mongolia late Miocene The emergence of C4 photosynthesis in plants as a significant component of terrestrial ecosystems is thought to be an adaptive response to changes in atmospheric CO 2 concentration and/or climate during Neogene times and has had a profound effect on the(More)
Keywords: C4 plants stable isotopes fossil mammals Qaidam Basin late Miocene early Pliocene a b s t r a c t The timing history and driving mechanisms of C4 expansion and Tibetan uplift are hotly debated issues. Paleoenvironmental evidence from within the Tibetan Plateau is essential to help resolve these issues. Here we report results of stable C and O(More)
a r t i c l e i n f o a b s t r a c t Keywords: stable isotopes paleo-diet paleo-temperature paleo-elevation Himalaya Tibetan Plateau A mid-Pliocene fauna (4.2–3.1 Ma) was recently uncovered in the Zanda (Zhada) Basin in the southwestern Himalaya, at an elevation of about 4200 m above sea level. These fossil materials provide a unique window for examining(More)
Keywords: Paleo-lake basin Mammalian fossils Stable isotopes Neogene environmental change Himalaya Tibetan Plateau a b s t r a c t The linkage between tectonic forces and climate evolution remains a matter of much debate and speculation. Here we present high-resolution oxygen and carbon isotope data from an ancient lake basin in the central Himalaya. These(More)
To examine paleodiets and habitats of extinct taxa and to understand long-term regional climate change, we determined the carbon and oxygen isotopic compositions of fossil herbivore teeth and soil samples from six localities in Yunnan Province, Southwest China, ranging in age from $10 Ma to the present. Although limited in spatial and temporal coverage,(More)
Quantifying and predicting the food web consequences of anthropogenic changes is difficult using traditional methods (based on gut content analysis) because natural food webs are variable and complex. Here, stable and radioactive carbon isotopes are used, in conjunction with nitrogen isotopes and mercury (Hg) concentration data, to document the effects of(More)
Late Holocene paleoclimate records from coastal regions are important for understanding long-term variability of hurricane activity. Here we present a nearly 4000-year record of severe storm landfalls and environmental changes based on organic geochemical proxies (OGPs) preserved in sediment cores from two coastal lakes in northwest Florida. Our analysis(More)
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