His main research concerns Paleontology, Oceanography, Benthic zone, Extinction event and Paleogene. Many of his research projects under Paleontology are closely connected to Extinction with Extinction, tying the diverse disciplines of science together. His study on Cretaceous–Paleogene boundary is often connected to Flood basalt, Deccan Traps, Phanerozoic and Mesozoic as part of broader study in Extinction.
His Benthic zone study incorporates themes from Bottom water and Total organic carbon. Robert P. Speijer studied Paleogene and Stage that intersect with Series, Global climate and Chronostratigraphy. His research integrates issues of δ18O, Carbonate platform and Fauna in his study of Foraminifera.
His primary areas of study are Paleontology, Oceanography, Benthic zone, Foraminifera and Paleogene. In general Paleontology, his work in Cretaceous and Marl is often linked to Extinction event linking many areas of study. In the field of Oceanography, his study on Sea level, Holocene climatic optimum and Paleoclimatology overlaps with subjects such as Environmental science.
His work deals with themes such as Bay, δ18O, Paleoecology and Upwelling, which intersect with Benthic zone. The concepts of his Foraminifera study are interwoven with issues in Taphonomy and Isotopes of carbon. His biological study spans a wide range of topics, including Abundance, Biozone, Cenozoic, Bottom water and Lithology.
His primary areas of investigation include Oceanography, Paleontology, Cretaceous, Benthic zone and Foraminifera. His work on Environmental change as part of his general Oceanography study is frequently connected to Environmental science, Cretaceous–Paleogene boundary, Dinocyst and Extinction event, thereby bridging the divide between different branches of science. The Paleogene and Seafloor spreading research Robert P. Speijer does as part of his general Paleontology study is frequently linked to other disciplines of science, such as Event, therefore creating a link between diverse domains of science.
His Cretaceous research includes elements of Phytoplankton, Paleoclimatology, Multi proxy, Anoxic waters and Upwelling. His Benthic zone research incorporates elements of Sedimentology, δ18O, Structural geology and Carbon cycle. Robert P. Speijer works mostly in the field of Foraminifera, limiting it down to topics relating to Carbon isotope excursion and, in certain cases, Geochemistry, Stratification and Thermocline, as a part of the same area of interest.
His primary scientific interests are in Oceanography, Paleontology, Benthic zone, Cretaceous and Paleoclimatology. His studies deal with areas such as Early Pleistocene and Northern Hemisphere as well as Oceanography. His Paleontology research integrates issues from Environmental change and Fauna.
His study in Benthic zone is interdisciplinary in nature, drawing from both Abyssal zone, Paleoecology and Seamount. Robert P. Speijer focuses mostly in the field of Cretaceous, narrowing it down to matters related to Foraminifera and, in some cases, Upwelling and Diagenesis. His Seafloor spreading research focuses on subjects like Dominance, which are linked to Paleogene.
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The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary
Peter Schulte;Laia Alegret;Ignacio Arenillas;José A. Arz.
The Paleogene Period
Noël Vandenberghe;FJ Hilgen;Robert Speijer.
The Geologic Time Scale 2012 (2012)
A benthic foraminiferal record of Paleocene sea level and trophic/redox conditions at Gebel Aweina, Egypt
Robert P. Speijer;Birger Schmitz.
Palaeogeography, Palaeoclimatology, Palaeoecology (1998)
Late Paleocene early Eocene Tethyan carbonate platform evolution — A response to long- and short-term paleoclimatic change
C. Scheibner;Robert Speijer.
Earth-Science Reviews (2008)
The Dababiya Quarry Section: Lithostratigraphy, clay mineralogy, geochemistry and paleontology
Christian Dupuis;Marie-Pierre Aubry;Etienne Steurbaut;William A. Berggren;William A. Berggren.
High-resolution iridium, δ13C, δ18O, foraminifera and nannofossil profiles across the latest Paleocene benthic extinction event at Zumaya, Spain
Birger Schmitz;Frank Asaro;Eustoquio Molina;Simonetta Monechi.
Palaeogeography, Palaeoclimatology, Palaeoecology (1997)
Sea-level changes and black shales associated with the late Paleocene thermal maximum: Organic-geochemical and micropaleontologic evidence from the southern Tethyan margin (Egypt-Israel)
Robert P. Speijer;Thomas Wagner.
Catastrophic Events & Mass Extinctions: Impacts and beyond, Date: 2000/07/09 - 2000/07/12, Location: Vienna (2002)
Turnover of larger foraminifera during the Paleocene-Eocene Thermal Maximum and paleoclimatic control on the evolution of platform ecosystems
C. Scheibner;R.P. Speijer;A.M. Marzouk.
Barium, SiO2 (excess), and P2O5 as proxies of biological productivity in the Middle East during the Palaeocene and the latest Palaeocene benthic extinction event
Birger Schmitz;Stella D. Charisi;Elisabet I. Thompson;Robert P. Speijer.
Terra Nova (1997)
The impact of Paleocene/Eocene boundary events on middle neritic benthic foraminiferal assemblages from Egypt
R.P. Speijer;G.J. Van Der Zwaan;B. Schmitz.
Marine Micropaleontology (1996)
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