Results 91 to 100 of about 9,559 (293)

Ngarrawa (mound spring) sediments as archives of Holocene environmental change in arid central Australia: Insights from Itrax XRF scanning

Journal of Quaternary Science, EarlyView.
ABSTRACT Central Australia's ngarrawa, or ‘mound springs’, are unique hydrological systems that serve as some of the only near‐permanent sources of water and continuous sediment deposition in Australia's arid interior. As such, they hold significant potential as palaeo‐climate and ‐environmental archives in a region where many aspects of past climate ...
Fletcher C. Nixon, Jonathan J. Tyler, Patricia S. Gadd, Quan Hua   +3 more
wiley   +1 more source

FOAM

, 2020
FOAM model data as used in Kennedy-Asser et al. 2020 (Climate of the Past); originally published in Ladant et al. 2014 (Paleoceanography)
Alan Thomas Kennedy-Asser
core   +3 more sources

Bølling‐Allerød Productivity in the Subarctic Pacific Driven by Seasonal Upwelling

Geophysical Research Letters
The Bølling‐Allerød deglacial event is marked by high diatom productivity and opal deposition throughout the subarctic Pacific. This opal could either constitute a strengthened biological pump and thus carbon sequestration, or a weakened biological pump ...
K. A. DeLong, T. Blackburn, B. Caissie, J. Addison, Z. Stroynowski, M. R. Sipala, F. Marcantonio, A. C. Ravelo   +7 more
doaj   +1 more source

CALCAREOUS NANNOFOSSIL BIOSTRATIGRAPHY AND PALEOCEANOGRAPHY OF THE TOARCIAN OCEANIC ANOXIC EVENT AT COLLE DI SOGNO (SOUTHERN ALPS, NORTHERN ITALY)

Rivista Italiana di Paleontologia e Stratigrafia, 2015
We present calcareous nannofossil biostratigraphy and abundances for the Upper Pliensbachian-Lower Toarcian interval, including the Toarcian Oceanic Anoxic Event (T-OAE), represented by the Fish Level at Colle di Sogno (N Italy).
CRISTINA EMANUELA CASELLATO, ELISABETTA ERBA   +1 more
doaj   +1 more source

Tiepoints for ODP Site 108-658

, 2013
XRF match: matching XRF-derived Ca counts from 658A/B to ÊCO3 from radiocarbon-dated 658C (deMenocal et al. 2000; Quaternary Science Reviews; 658C age model as in Adkins et al., 2006, Paleoceanography).
Sigman, Daniel M, Gibson, Kelly A, Roger Francois (6963200), Martínez-García, Alfredo, Larry C Peterson (6972398), Daniel M Sigman (6959912), Tiedemann, Ralf, Samuel L Jaccard (6960791), Haug, Gerald H, Ursula Röhl (6959540), Kelly A Gibson (7998434), Francois, Roger, Röhl, Ursula, Alfredo Martínez‐García (7193519), Meckler, Anna Nele, Jaccard, Samuel L, Ralf Tiedemann (6886628), Anna Nele Meckler (7998431), Gerald H Haug (6959906), Peterson, Larry C   +19 more
core   +1 more source

Bioerosion Drill Holes Increase Carbonate Dissolution in the Planktonic Foraminifer Globigerinoides ruber

Geochemistry, Geophysics, Geosystems
Planktonic foraminifera are instrumental in reconstructing paleoceanographic and paleoclimatic conditions. However, preferential dissolution can significantly bias both assemblages and chemical analyses, leading to biased interpretations.
Cristiane Fraga Frozza, Jaime Y. Suárez‐Ibarra, Carla Bonetti, Alisson Martins, João Carlos Coimbra, Maria Alejandra Gomez Pivel   +5 more
doaj   +1 more source

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

Journal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine, Joost Frieling, Bernd Wagner, Martin Melles, Volker Wennrich, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

Journal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio, Luca Aldega, Luigi Dallai, Mario Gaeta, Fabrizio Marra   +4 more
wiley   +1 more source

Early Oligocene to middle Miocene surface ocean conditions offshore Cape Adare (Ross Sea, Antarctica); palynological and temperature records of DSDP Site 274

, 2020
13th International Conference on Paleoceanography 2-6 September 2019 Sydney ...
Sangiorgi, Francesca, Hoem, Frida S., Escutia, Carlota, Brinkhuis, Henk, Bijl, Peter K., Evangelinos, Dimitris   +5 more
core