Results 71 to 80 of about 7,479 (224)

Site 502: Colombia Basin, Western Caribbean [PDF]

, 1982
Our specific objective at Site 502 was to recover an undisturbed, complete section that could be used as a Neogene and Quaternary reference section. A complete record such as this would allow intercorrelations between (1) paleomagnetic stratigraphy, (2 ...
Adelseck, Charles, Blechschmidt, Gretchen, Fleet, Andrew, Gardner, James V., Keigwin, Lloyd, Kent, Dennis V., Ledbetter, Michael T., Mann, Ulrich, Mayer, Larry A., Prell, Warren L., Riedel, William R., Sancetta, Constance, Spariosu, Dann J., Zimmerman, Herman B.   +13 more
core   +2 more sources

Enhancing event stratigraphic correlations in the ultra‐deep Japan Trench using XRF‐CS cluster‐based chemostratigraphy

The Depositional Record, Volume 12, Issue 1, February 2026.
Cluster‐based chemostratigraphy using XRF‐CS enables high‐resolution correlation of event deposits across contrasting depositional settings in the Japan Trench. This approach reveals previously unrecognised events and compositional heterogeneity, offering new insights into sediment provenance and earthquake‐triggered deposition, with implications for ...
Jyh‐Jaan Steven Huang, Charlotte Pizer, Jun‐Ting Lin, Ken Ikehara, Michael Strasser   +4 more
wiley   +1 more source

Variations of porosity in calcareous sediments from the Ontong Java Plateau [PDF]

, 1993
Based on index properties measurements made on board the JOIDES Resolution, we studied porosity changes with depth in the fairly homogeneous deep-sea calcareous sediments cored during Ocean Drilling Program Leg 130 on the Ontong Java Plateau.
Bassinot, Frank, Marsters, Janice C., Mayer, Larry A., Wilkens, Roy H.   +3 more
core   +4 more sources

Biogenic Opal Deposition in the Surveyor Fan (IODP Site U1417) in the Gulf of Alaska (North Pacific) During the Late Miocene to Early Pleistocene

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract International Ocean Discovery Program (IODP) Site U1417, located in the Surveyor Fan (Gulf of Alaska), preserves hemipelagic sediments influenced by glacial and fluvial depositional processes from the Cordilleran Ice Sheet in the Chugach–St. Elias Mountains and Coastal Mountains.
B. K. Khim, S. Kim, H. Asahi
wiley   +1 more source

Nanofósiles calcáreos paleógenos y biostratigrafía para dos pozos en el este de la Cuenca Austral, Patagonia, Argentina [PDF]

, 2013
Calcareous nannofossils from two boreholes (Campo Bola and Sur Río Chico) in the subsurface of eastern Austral Basin, Santa Cruz Province, Argentina, allowed the identification of Early to Middle Paleocene, Early to Middle Eocene and Late Eocene to Early
Perez Panera, Juan Pablo
core   +2 more sources

Silicate and Carbonate Weathering Perturbation at the Eocene‐Oligocene Transition Recorded by Mg Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract During the Eocene‐Oligocene Transition (ca. 34 Ma), the Earth underwent a dramatic decline in atmospheric CO2, global cooling, a deepening of the carbonate compensation depth (CCD), and the formation of a permanent ice sheet on Antarctica. The expansion of Antarctic glaciers eroded the underlying bedrock and increased the weathering flux to ...
Adam D. Sproson, Toshihiro Yoshimura, Shigeyuki Wakaki, Takahiro Aze, Yusuke Yokoyama, Tsuyoshi Ishikawa, Naohiko Ohkouchi   +6 more
wiley   +1 more source

Calcareous nannofossils of the Jurassic/Cretaceous boundary strata in the Puerto Escano section (southern Spain) — biostratigraphy and palaeoecology

Geologica Carpathica, 2016
We obtained material from the Puerto Escano section (southern Spain) to study the Jurassic/Cretaceous (J/K) boundary interval. The same samples had already been processed for magnetostratigraphic studies and biostratigraphic zonation based on ...
Svobodová Andrea, Kośák Martin
doaj   +1 more source

Integrated stratigraphy of the Waitakian-Otaian Stage boundary stratotype, Early Miocene, New Zealand [PDF]

, 1999
The base of the type section of the Otaian Stage at Bluecliffs, South Canterbury, is recognised as the stratotype for the boundary between the Waitakian and Otaian Stages.
Allan R. S., Armentrout J. M., Be A. W. H., Berggren W. A., Berggren W. A., Carter R. M., Carter R. M., Edwards A. R., Edwards A. R., Edwards A. R., Finlay H. J., Finlay H. J., Finlay H. J., Gair H. S., Gasperi J. T., Graham I. J., Gudex M. C., Gudex M. C., Hayward B. W., Heider F., Hornibrook N. de B., Jenkins D. G., Jenkins D. G., Laws C. R., Li Q., Martini E., Marwick J., Maxwell P. A., McGowran B., Park J., Pocknall D. T., Scott G. H., Scott G. H., Scott G. H., Scott G. H., Steininger F. F., Thomson J. A., Wei W., Wilson G. J., Wilson G. S., Wright J. D.   +40 more
core   +2 more sources

Late Holocene Increase in Influence of Pacific Deep Water off Southern Chile Caused by Migration of the Southern Westerly Wind: Evidence From Beryllium Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract The Southern Hemisphere westerly winds and the Antarctic Circumpolar Current, both located offshore Chile, are key components of global climate due to their influence on Southern Ocean upwelling and nutrient utilization with implications for atmospheric CO2.
Karin Nemoto, Yusuke Yokoyama, Adam David Sproson, Yosuke Miyairi, Takahiro Aze, Yair Rosenthal, Samantha Bova, Hailey Riechelson   +7 more
wiley   +1 more source

The Monterey event in the Mediterranean: A record from shelf sediments of Malta [PDF]

, 1996
Oligo-Miocene carbonate platform and shelf sediments outcropping on the Maltese Islands provide an excellent archive of the paleoceanography of the central Mediterranean.
Jacobs, E, Shields, G, Stille, P, Weissert, H   +3 more
core   +1 more source