Results 31 to 40 of about 511 (177)
Picking nannofossils: How and why [PDF]
Journal of Micropalaeontology, 2016 No abstract available.
Suchéras-Marx, Baptiste +3 more
openaire +5 more sources
Rivista Italiana di Paleontologia e Stratigrafia, 2002 The relative position of 30 main bioevents pertaining to calcareous nannofossils and planktonic foraminifera was identified in the time interval between 13.75 Ma and 10.50 Ma, based on the quantitative study of the those microfossils in three ...
RODOLFO SPROVIERI +9 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.Abstract Instantaneous event deposits such as turbidites, debrites, and slumps are common and frequently occur in marginal seas. These instantaneous deposits represent seconds to days in duration, and can therefore significantly impact age‐depth models and interpretation of paleoclimate history based on thick sedimentary sequences recovered in deep ...
Xunpeng Li +8 more
wiley +1 more source
Sedimentology, Volume 73, Issue 5, Page 1631-1663, August 2026.ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi +4 more
wiley +1 more source
The calcareous nannofossil Prinsiosphaera achieved rock-forming abundances in the latest Triassic of western Tethys: consequences for the δ13C of bulk carbonate [PDF]
Biogeosciences, 2013 The onset of pelagic biomineralization was a milestone in the history of the long-term inorganic carbon cycle: as soon as calcareous nannofossils became major limestone producers, the pH and supersaturation state of the global ocean were stabilized (the ...
N. Preto +4 more
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Ecology and Evolution, Volume 16, Issue 7, July 2026.Crab autotomy with evidence of regeneration is described for the first time in the fossil record. Autotomy is a defensive behavior that affects more males than females of Achelous monspeliensis and may be related to mating season. ABSTRACT Autotomy—the voluntary shedding of a limb as a defensive response to predation, intraspecific aggression, or ...
Carlos Neto de Carvalho, Pedro Marrecas
wiley +1 more source
Rivista Italiana di Paleontologia e Stratigrafia, 2016 In this work, calcareous nannofossils are identified for the first time in the uppermost Triassic sequence of the Lombardy Basin (Southern Calcareous Alps, Italy).
CINZIA BOTTINI +5 more
doaj +1 more source
Marine Sediment Record of Eruption‐Fed Vertical Density Currents, Kermadec Arc (Rangitāhua)
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.Abstract Products of explosive volcanism can be transported into the oceans, where they form marine tephra layers. The processes responsible for their deposition are often complex, involving multiple transport mechanisms. During the RV Investigator voyage IN2022‐V02 (2022), a 35‐cm‐thick marine tephra unit was piston‐cored at 2,460 m water depth in the
Janne M. Scheffler +7 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.Abstract Marine Isotope Stage (MIS) 11 (424–374 ka) has long been an analog for Holocene climate because it is the most recent interglacial period with similar orbital conditions. However, there is global and regional variability in the climate response to MIS 11 warmth.
N. S. Thompson, B. E. Caissie
wiley +1 more source
Biostratigraphy of Gurpi Formation in Samand anticline (Lurestan province) Based on calcareous nannofossils [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2017 The present study is an attempt to biostratigraphically classify the rocks of Gurpi Formation at Samand Anticline with the help of calcareous nannofossils. The succession measures 197 meters in thickness and consists of shale, marl and marly limestone. A
samira shahriyary +2 more
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