www.sciencemag.org (this information is current as of July 24, 2008 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/311/5760/511 version of this article at: including high-resolution figures, can be found in the online Updated information and services, found at: can be related to this article A list of selected additional art...

The elevation of Earth's surface is among the most difficult environmental variables to reconstruct from the geological record. Here we describe an approach to paleoaltimetry based on independent and simultaneous determinations of soil temperatures and the oxygen isotope compositions of soil waters, constrained by measurements of abundances of 13C-18O bonds in soil carbonates. We use this appro...

The loess-paleosol profile near the settlement of Pécel has a notable size among sequences Northern Carpathian territories. Therefore, comprehensive sedimentological examinations were performed to understand and information preserved in it. past periodicity intensity winds showed by particle composition studies (GSI, U-ratio). At least two source areas can be presumed based on geochemical indic...

Throughout the Phanerozoic, estimated CO2 levels from proxies generally correlate well with independent estimates of temperature. However, some proxy atmospheric during Late Cretaceous and early Paleocene are low (<400 ppm), seemingly at odds elevated sea surface Here we evaluate by applying a leaf gas-exchange model to Platanites leaves four localities San Juan Basin, New Mexico (65.66–64.59 M...