Silicate weathering machine at work: Rock magnetic data from the late Paleocene-early Eocene Cicogna section, Italy

Silicate weathering and North Atlantic silica burial during the Paleocene-Eocene Thermal Maximum

During the Paleocene-Eocene Thermal Maximum (PETM, ca. 56 Ma), thousands of gigatons of carbon were released into the ocean and atmosphere over several thousand years, offering the opportunity to study the response of ocean biogeochemistry to a carbon cycle perturbation of a similar magnitude to projected anthropogenic CO2 release. PETM scenarios typically invoke accelerated chemical weathering...

Geochemistry of the Paleocene Sediments from SW Ahar: Implications for Provenance, Tectonics and Source Rock Weathering

The mineralogy and geochemistry of Paleocene shales and interbedded siltstones in the southwestern of Ahar town (NW Iran) were studied by optical microscopy, XRD, SEM, XRF, and ICP-MS techniques. The mineralogical composition, mainly characterized by calcite, quartz, feldspar, dolomite, muscovite, magnesiohornblende, chlorite, illite, montmorionite, palygorskite, and koninckite, suggests relati...

Mammalian dispersal at the Paleocene/Eocene boundary.

A profound faunal reorganization occurred near the Paleocene/Eocene boundary, when several groups of mammals abruptly appeared on the Holarctic continents. To test the hypothesis that this event featured the dispersal of groups from Asia to North America and Europe, we used isotope stratigraphy, magnetostratigraphy, and quantitative biochronology to constrain the relative age of important Asian...

Understanding long-term carbon cycle trends: The late Paleocene through the early Eocene

[1] The late Paleocene to the early Eocene ( 58–52 Ma) was marked by significant changes in global climate and carbon cycling. The evidence for these changes includes stable isotope records that reveal prominent decreases in ı18O and ı13C, suggesting a rise in Earth’s surface temperature ( 4ıC) and a drop in net carbon output from the ocean and atmosphere. Concurrently, deep-sea carbonate recor...

Late Paleocene and Early Eocene Paleoclimate Reconstructions: The Digital Leaf Physiognomy Approach