Results 111 to 120 of about 37,526 (211)
The utility of deep-water agglutinated Foraminiferal acmes for correlating Eocene to Oligocene abyssal sediments in the North Atlantic and Western Tethys [PDF]
Quantitative analysis of Deep-water Agglutinated Foraminifera (DWAF) assemblages from key ODP sites in the North Atlantic reveal the presence of stratigraphically-significant abundance maxima, that may be useful for correlating sedimentary sequences ...
Kaminski, M.A.
core
Distribution of planktic foraminifera in surface sediments
Distribution of planktic foraminifera in surface ...
Matthias Hüls (6964742) +1 more
core +1 more source
Abstract The Cape Darnley marine region of East Antarctica is one of only four sectors where Antarctic Bottom Water (AABW) is produced. AABW formation at Cape Darnley is highly dependent on surface ocean processes—specifically, the high production of frazil ice. Here, we investigated the sea surface conditions at Cape Darnley over the past 600 thousand
M. Husdell +10 more
wiley +1 more source
Lost in translation: conserved amino acid usage despite extreme codon bias in foraminifera
Analyses of codon usage in eukaryotes suggest that amino acid usage responds to GC pressure so AT-biased substitutions drive higher usage of amino acids with AT-ending codons.
Auden E. Cote-L'Heureux +3 more
doaj +1 more source
Abstract Although foraminiferal oxygen isotope records (δ18OF) have long been used to develop time‐continuous estimates of past global ice volume, growing evidence indicates that the ice volume and temperature contributions to δ18OF diverge considerably over the last glacial cycle.
Tamara Pico +5 more
wiley +1 more source
Foraminifera are unicellular protists with external shells (tests) that may be calcareous (porcelaneous or hyaline), agglutinated, or organic-walled. Their test morphology and as-assemblage composition closely track environmental forcing, making them ...
Hyun Ju Ha +7 more
doaj +1 more source
Simulated Ocean Oxygen Under Miocene Boundary Conditions
Abstract The Miocene Climatic Optimum (MCO; 16.9–14.7 Ma) was a warm interval with atmospheric CO2 ${\text{CO}}_{2}$ comparable to end‐of‐21st‐century projections under intermediate emission scenarios. Proxy records indicate the Oxygen Minimum Zone (OMZ) in the Eastern Tropical Pacific (ETP) was small or non‐existent during the MCO, expanding only when
James R. Berg +5 more
wiley +1 more source
The uppermost 2 meters of the Maastrichtian Scaglia Rossa Fm. (Gubbio, Italy) record a notable change in the proportions of morphogroups of deep-water agglutinated foraminifera beginning about 1.4 m below the boundary, where we observe a gradual decrease
Michael A. Kaminski +2 more
doaj +1 more source
AllIGATR: A Multi‐Dimensional Approach for Marine Archaeal Lipid‐Based Paleothermometry
Abstract Archaeal glycerol dibiphytanyl glycerol tetraether membrane lipids (GDGTs) are ubiquitous in marine sediments. The number of ring structures in six specific GDGTs varies with seawater temperature, leading to their use in paleothermometry. GDGT temperature dependence is typically quantified in TEX86.
Addison Rice +4 more
wiley +1 more source
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

