نتایج جستجو برای: nannofossils

تعداد نتایج: 185  

2001
Joseph L. Kirschvink Shih-Bin R. Chang

A new extraction technique now permits ultrafine magnetite crystals to be separated from a variety of deep-sea sediments. Morphologic characterization of these particles with transmission electron microscopy reveals the presence of several distinct crystal types, some of which closely resemble those formed by the magnetotactic bacteria. The apparently biogenic magnetite particles are of single-...

2002
Mitchell W. Lyle Thomas R. Janecek Jan Backman Helen K. Coxall

Ocean Drilling Program (ODP) Leg 199, “The Paleogene Equatorial Transect” (Sites 1215 through 1222), was designed to study the evolution of the equatorial Pacific current and wind system as the Earth went from maximum Cenozoic warmth to initial Antarctic glaciations. The drilling program was primarily devoted to a transect along 56to 57-Ma crust, old enough to capture the Paleocene/ Eocene boun...

2003
STEPHEN F. PEKAR NICHOLAS CHRISTIE-BLICK KENNETH G. MILLER MICHELLE A. KOMINZ

The Oligocene of the New Jersey continental margin is divisible into as many as eight sequences and 23 lithofacies associations, documented in a series of seven boreholes across the modern coastal plain. This paper summarizes the sequence architecture of these deposits, interpreted from high-resolution biostratigraphy and Sr-isotope chemostratigraphy, and evaluates the factors that governed pat...

2009
C. Cornet L. Fontaine

volume Page 1 PROGRAM 10h00-10h20: E. Pétus, P. Gerrienne & C. Prestianni Physostoma cf. stellatum Holden : a Bashkirian spermatophyte from Bouxharmont (Belgium). 10h20-10h40: C. Prestianni, D. Fokan & P. Gerrienne Record of wildfires in the Famennian of Belgium. 10h40-11h00: P. Gonez & P. Gerrienne Comments on Cooksonia, a basal Eutracheophyte. 11h00-11h20: P. Gerrienne, C. Strullu-Derrien & P...

2006
SIMONE GALEOTTI MICHAEL A. KAMINSKI RODOLFO COCCIONI ROBERT P. SPEIJER

The distribution of benthic foraminifera across the Paleocene/Eocene (P/E) Boundary of the Contessa Road section allows us to compare the response of both calcareous hyaline and Deep Water Agglutinated Foraminiferal (DWAF) assemblages to the terminal Paleocene Benthic Extinction Event (BEE). The two groups are contemporaneously affected by the terminal Paleocene events. Quantitative analysis re...

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