Results 131 to 140 of about 36,286 (242)
Abstract Past warmhouse climates differed from the modern ocean circulation regime, with deep‐water formation occurring in regions that are inactive today. Evidence suggests that the North Pacific may have been one such region. The early Eocene, characterized by elevated greenhouse gas concentrations and orbitally paced carbon cycle perturbations ...
Q. Jiang +4 more
wiley +1 more source
NanoSIMS applied to the study of foraminifera [PDF]
NanoSIMS (Nanoscale Secondary-Ion Mass Spectrometry) is a powerful analytical technique that allows quantitative, subcellular imaging of incorporation and transfer of isotopically labeled compounds and metabolites in biological tissue (Hoppe et al., 2013)
A. Meibom +19 more
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Tracking Agulhas Leakage in the South Atlantic Using Modern Planktic Foraminifera Nitrogen Isotopes
Seawater transported into the South Atlantic from the Indian Ocean via “Agulhas leakage” modulates global ocean circulation and has been linked to glacial‐interglacial climate cycles. However, constraining past Agulhas leakage has been a challenge.
R. Granger +9 more
doaj +1 more source
The Plio‐Pleistocene succession of the Po Plain Basin was interpreted basin‐wide using seismic profiles and well data, identifying six major tectonic unconformities. Sediment volumes were calculated and decompacted to assess tectonic and climatic controls on basin infill, revealing a marked increase in detrital flux after 1.5 Ma, coincident with the ...
Daniel Barrera +5 more
wiley +1 more source
An emendation of some Cretaceous species of "Reophax" (Foraminiferida) from northwest Europe and Poland [PDF]
The classification of some deep-water agglutinated foraminifera identified as Reophax minuta Tappan, 1940 is revised based upon examination of type material.
Kaminski, M.A., Geroch, S.
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Changes in the physical properties of calcareous ooze between intact weak layers and glide planes within the same stratigraphy provide new constraints on the deformation processes and mechanical factors that control the mobility and erosive behaviour of submarine carbonate landslides.
Yan Li +4 more
wiley +1 more source
ABSTRACT Following the largest known Phanerozoic extinction, the end‐Permian mass extinction, the Early Triassic is often considered an interval of slow biotic recovery. During this time, the minor Smithian‐Spathian extinction occurred, further delaying the biotic recovery of this epoch.
Sean M. Newby +3 more
wiley +1 more source
Key Points Low‐Mg calcite RM developed for in situ microanalysis applications in palaeoclimatology (δ18O, δ13C; Mg, Sr m/m). New data for calcite CRM IAEA‐603 (δ18O, δ13C by SIMS and GS‐IRMS; Mg m/m). No detectable IMF effect of Mg on SIMS δ18O determinations for mass fractions < 3650 μg g‐1.
Andreas T. Hertwig +13 more
wiley +1 more source
Praesphaerammina, a new genus of Cenozoic deep-water agglutinated foraminifera from the Carpathian flysch deposits [PDF]
The genus Praesphaerammina Kaminski and Filipcscu is newly described based on a revision of the type species Cystammina subgaleata Vasicek 1947. The genus differs from the Holocene genus Sphaerammina Cushman 1910 emend.
Kaminski, M.A., Filipescu, S.
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