Paleoclimatology

Just out | Terrestrial mollusk records from Chinese loess sequences and changes in the East Asian monsoonal environment @ Journal of Asian Earth Sciences

Just out @ Journal of Asian Earth Sciences Terrestrial mollusk records from Chinese loess sequences and changes in the East Asian monsoonal environment Author(s) Naiqin Wu, Fengjiang Li, Denis-Didier Rousseau Abstract: The terrestrial mollusk fossils found in Chinese loess strata have been studied for over one hundred years. However, the greatest progress in these studies has been made only in the last two decades. In this paper, we review the advancements,

Just out | Late Cretaceous radiolarians from a bentonite-rich interval at the base of the Niobrara Formation, southwestern Saskatchewan, Canada: biostratigraphic and paleoenvironmental implications @ Canadian Journal of Earth Sciences

Just out @ Canadian Journal of Earth Sciences Late Cretaceous radiolarians from a bentonite-rich interval at the base of the Niobrara Formation, southwestern Saskatchewan, Canada: biostratigraphic and paleoenvironmental implications Author(s) Juan F. Diaz, Maria I. Velez Abstract: A radiolarian assemblage containing 11 species of both nasellarians and spumellarians was recovered from the Upper Cretaceous Niobrara Formation in southwestern Saskatchewan, Canada. This assemblage represents the first report of Coniacian radiolarians in

Just out | Paleoenvironment reconstruction of Parnaíba Basin (north, Brazil) using indicator species analysis (IndVal) of Devonian microphytoplankton @ Marine Micropaleontology

Just out @ Marine Micropaleontology Paleoenvironment reconstruction of Parnaíba Basin (north, Brazil) using indicator species analysis (IndVal) of Devonian microphytoplankton Author(s) Viviane Segundo Faria Trindade, Marcelo de Araujo Carvalho Abstract: The microphytoplankton record of Parnaíba Basin is typically of Devonian age and commonly associated with changes in marine environments. The method of Indicator Species Analysis (IndVal) was applied as a tool for reconstructing marine environment changes during the Devonian (Pragian—Famennian). The IndVal

Just out | A multiproxy record of the Younger Holsteinian Oscillation (YHO) in the Ossówka profile, eastern Poland @ Boreas

Just out @ Boreas A multiproxy record of the Younger Holsteinian Oscillation (YHO) in the Ossówka profile, eastern Poland Author(s) Jerzy Nitychoruk, Krzysztof Bińka, Elwira Sienkiewicz, Marcin Szymanek, Marta Chodyka, Michał Makos, Hans Ruppert, Alina Tudryn Abstract: The laminated lacustrine succession at Ossówka in eastern Poland, which is largely the equivalent of MIS 11c, is amongst the best-developed sites in Europe that cover this time period. Close inspection of the

Just out | Oxygen isotope analysis of the eyes of pelagic trilobites: Testing the application of sea temperature proxies for the Ordovician @ Gondwana Research

Just out @ Gondwana Research Oxygen isotope analysis of the eyes of pelagic trilobites: Testing the application of sea temperature proxies for the Ordovician Author(s) Carys E. Bennett, Mark Williams, Melanie J. Leng, Martin R. Lee, Magali Bonifacie, Damien Calmels, Richard A. Fortey, John R. Laurie, Alan W. Owen, Alex A. Page, Axel Munnecke, Thijs R.A. Vandenbroucke Abstract: The oxygen isotope composition of well-preserved trilobite eye calcite, retaining its original optical properties, represents a possible source of information on Paleozoic sea temperatures.

Just out | Early Cretaceous atmospheric CO2 estimates based on stomatal index of Pseudofrenelopsis papillosa (Cheirolepidiaceae) from southeast China @ Cretaceous Research

Just out @ Cretaceous Research Early Cretaceous atmospheric CO2 estimates based on stomatal index of Pseudofrenelopsis papillosa (Cheirolepidiaceae) from southeast China Author(s) Dai Jing, Sun Bainian Abstract: Estimates of the atmospheric carbon dioxide concentration levels were made for three time intervals of the Early Cretaceous using the stomatal indices of an extinct fossil conifer, Pseudofrenelopsis papillosa (Chow et Tsao) Cao ex Zhou. The fossil materials were collected from the upper Hauterivian, upper Aptian, and upper Albian of the

Just out | Calcareous nannofossil biostratigraphy and paleoclimatology of the Paleocene succession, Tenida area, Western Desert, Egypt @ Revue de Micropaléontologie

Just out @ Revue de Micropaléontologie Calcareous nannofossil biostratigraphy and paleoclimatology of the Paleocene succession, Tenida area, Western Desert, Egypt Author(s) Haitham M.Ayyad Abstract: This study is a preliminary quantitative analysis of Paleocene calcareous nannofossil assemblages of the Tenida area (Egypt) in order to establish a detailed biostratigraphic framework as well as to reconstruct the paleoclimatic trends. A total of 48 samples with an average sample spacing of 1.5 m allowed the

Just out | New evidence for “far-field” Holocene sea level oscillations and links to global climate records @ Earth and Planetary Science Letters

Just out @ Earth and Planetary Science Letters New evidence for “far-field” Holocene sea level oscillations and links to global climate records Author(s) N.D. Leonard, K.J. Welsh, T.R. Clark, Y.-x. Feng, J.M. Pandolfi, J.-x. Zhao Abstract: Rising sea level in the coming century is of significant concern, yet predicting relative sea level change in response to eustatic sea level variability is complex. Potential analogues are provided by the recent geological past but, until recently, many

Just out | Eocene greenhouse climate revealed by coupled clumped isotope-Mg/Ca thermometry @ PNAS

Just out @ PNAS Eocene greenhouse climate revealed by coupled clumped isotope-Mg/Ca thermometry Author(s) David Evans, Navjit Sagoo, Willem Renema, Laura J. Cotton, Wolfgang Müller, Jonathan A. Todd, Pratul Kumar Saraswati, Peter Stassen, Martin Ziegler, Paul N. Pearson, Paul J. Valdes and Hagit P. Affek Abstract: Past greenhouse periods with elevated atmospheric CO2 were characterized by globally warmer sea-surface temperatures (SST). However, the extent to which the high latitudes warmed to a greater degree than the tropics (polar amplification) remains poorly constrained, in

On the News | USA | Tree rings reveal increased fire risk for southwestern US @ Nature News

On the News @ Nature News Title:  Tree rings reveal increased fire risk for southwestern US Cally Carswell Excerpt: “Ellis Margolis’s desk is covered in slices of wood. They’re scattered around his computer, piled in cardboard boxes and stacked on shelves. The tree rings and burn scars imprinted in the wood help the ecologist and other scientists predict the potential for future fires in the southwestern United States by understanding the blazes