Results 51 to 60 of about 1,700 (166)

Sedimentary biogeochemical provinces in the northern limit of the oxygen minimum zone from the northeastern Mexican Pacific

Sedimentology, Volume 73, Issue 5, Page 1403-1420, August 2026.
ABSTRACT Continental margins are reservoirs of materials of terrestrial and marine origin, and they play a crucial role in understanding the spatial and temporal variability of biogeochemical cycles. This, in turn, provides insights into the development and intensity of oxygen minimum zones (OMZs).
Alberto Sánchez
wiley   +1 more source

Dansgaard‐Oeschger Events Recorded in Low‐Latitude Marine Sediments and Teleconnection With High‐Latitude Climate Variations

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Dansgaard‐Oeschger (D‐O) events are millennial‐scale high‐latitude climate oscillations with abrupt climate transitions between stadial and interstadial conditions, which are well recorded in and outside of high northern latitudes. However, their signal propagation mechanisms from high to low latitudes are uncertain.
Zhanjie Liu, Zhaoxia Jiang, Long Chen, Andrew P. Roberts, Sanzhong Li, Liang Chen, Zhengxin Yin, Wanxin Liu, Yulong Guan, Yuzhen Zhang   +9 more
wiley   +1 more source

X-raying planktonic foraminifera [PDF]

Journal of Micropalaeontology, 1988
Abstract. X-raying planktonic foraminifera provides a rapid, efficient and cost-effective method of recording many specimens for biometric analysis. A new approach is here proposed which replaces previous complicated techniques.
Leary, P. N., Hart, M. B.
openaire   +2 more sources

Changing Pacific Salmon Nursery Lake Ecosystem Dynamics Over Centuries to Millennia: Insights From Sedimentary DNA Metabarcoding

Environmental DNA, Volume 8, Issue 4, July‐August 2026.
Sedimentary DNA metabarcoding tracks long‐term eukaryotic community change in Pacific salmon nursery lakes, revealing potential land‐use and climate influences on algal communities and resilience indicators. ABSTRACT Pacific salmon are keystone species in North Pacific freshwater, riparian, and marine ecosystems, but many populations have declined or ...
Yuanyu Cheng, David Walsh, Joanna Gauthier, Daniel Selbie, Irene Gregory‐Eaves   +4 more
wiley   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, Volume 61, Issue 7, Page 1976-2001, July 2026.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source

Biostratigraphy, facies and sequence stratigraphy of the Sarvak Formation in the Ahwaz Oil Field, North Dezful Embayment Zone [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2016
Paleontological studies lead to recognition of 21 genera and 16 species of benthic foraminifera, 5 genera and 6 species of planktonic foraminifera and 3 genera and 3 species of oligosteginids.
Mohammad Hasan Kazemzadeh, مسعود لطف پور   +1 more
doaj  

Early deglaciation history of the southeastern Baffin Island shelf (Eastern Canadian Arctic Archipelago)

Journal of Quaternary Science, Volume 41, Issue 5, Page 686-701, July 2026.
ABSTRACT During the last glacial period, the Laurentide Ice Sheet (LIS) was the largest terrestrial ice sheet on Earth. Its evolution since the Last Glacial Maximum profoundly influenced Earth's geodynamics and surface processes. Investigating the past dynamics of the LIS provides critical insights into how contemporary ice sheets may respond to ...
Alexis P. Belko, Alexandre Normandeau, Patrick Lajeunesse, Audrey Limoges   +3 more
wiley   +1 more source

Late Holocene hydrographic settings of the northern Red Sea

Egyptian Journal of Aquatic Research, 2016
Temporal variability of the paleo-oceanographic setting of the northern Red Sea during the last 6 Ky was deduced from high-resolution faunal results and stable isotope records of planktonic foraminifera in three short cores sediment obtained by the ...
Amani Badawi
doaj   +1 more source

Palaeobiogeography of early planktonic foraminifera

Bulletin de la Société Géologique de France, 2009
AbstractOver the last 50 years, our knowledge of early planktonic foraminifera has changed markedly. In 1958 Grigelis described “Globigerina oxfordiana” from the Upper Jurassic of Lithuania and this has, subsequently, become identified as one of the most geographically widespread of Jurassic planktonic taxa.
Christopher W. Smart, Malcolm B. Hart, Wendy Hudson   +2 more
openaire   +1 more source

An updated view on the long‐term survival and significance of marine protist resting stages

Limnology and Oceanography Letters, Volume 11, Issue 4, July 2026.
Abstract Resting stages of protists act as biological time capsules when buried in marine sediments, preserving viable cells that enable the study of ecological and evolutionary processes across timescales. Recent studies have extended the known viability in diatoms to several millennia and in dinoflagellates to over a century, while also identifying ...
Sanne Mariël Moedt, Sofia Ribeiro
wiley   +1 more source