Results 111 to 120 of about 3,900 (194)

Sea Surface Temperature and Salinity Changes in the Easternmost Mediterranean During the Pre‐Evaporitic Messinian Controlled by the Restriction at Gibraltar

Paleoceanography and Paleoclimatology, Volume 41, Issue 1, January 2026.
Abstract During the latest Miocene, the Mediterranean Basin was affected by extreme paleoceanographic and paleoenvironmental changes culminating with evaporite (gypsum and halite) formation during the Messinian Salinity Crisis (MSC: 5.97–5.33 Ma).
F. Lanterna, W. Krijgsman, L. Lourens, A. Mulch, I. Vasiliev   +4 more
wiley   +1 more source

Spatial and seasonal contrasts of sedimentary organic matter in floodplain lakes of the central Amazon basin [PDF]

, 2015
In this study, we investigated the seasonal andspatial pattern of sedimentary organic matter (SOM) in fivefloodplain lakes of the central Amazon basin (Cabaliana,Janauaca, Canaçari, Mirituba and Curuai) which have differentmorphologies, hydrodynamics and
Abril, G., Bernardes, M.C., Kim, J.-H., Meziane, T., Moreira-Turcq, P., Mortillaro, J.M., Sinninghe Damsté, J.S., Sobrinho, R.L, Zell, C.I.   +8 more
core   +9 more sources

Controls on brGDGT Production in the Seasonally Anoxic Water Column and Sediments of Rotsee (Lake Rot)

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 12, December 2025.
Abstract Reliable paleotemperature proxies are essential for reconstructing past climate. To refine interpretation of the MBT'5ME index, based on bacterial brGDGT lipids, a year‐long study was conducted in Rotsee, Switzerland, a seasonally stratified lake with a 4–21°C temperature range.
Fatemeh Ajallooeian, Nathalie Dubois, S. Nemiah Ladd, Mark Alexander Lever, Carsten Johnny Schubert, Cindy De Jonge   +5 more
wiley   +1 more source

Grain Size Associations of Branched Tetraether Lipids in Soils and Riverbank Sediments: Influence of Hydrodynamic Sorting Processes

Frontiers in Earth Science, 2017
We analyzed the abundance and distribution of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in grain size fractions of 7 globally distributed river flank sediments and catchment soils in order to determine if and how the initial soil-brGDGT ...
Francien Peterse, Francien Peterse, Timothy I. Eglinton   +2 more
doaj   +1 more source

An offset in TEX86 values between interbedded lithologies: Implications for sea-surface temperature reconstructions [PDF]

, 2016
This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record.The TEX86 (TetraEther indeX of tetraethers consisting of 86 carbon atoms) sea-surface temperature (SST) proxy is based on the distribution of ...
Bown, PR, Littler, K, Robinson, SA
core   +1 more source

Stepwise Cooling Events in the Western Arctic at 8.2 and 4.2 ka: Proxy Development and Application

Paleoceanography and Paleoclimatology, Volume 40, Issue 12, December 2025.
Abstract Hydroxylated glycerol dialkyl glycerol tetraether (GDGT)‐based proxies have recently been proposed for reconstructing sea surface temperatures (SSTs) in polar oceans, but their reliability has not yet been sufficiently validated. We investigated the spatial distribution of hydroxylated GDGTs in surface sediments from the western Arctic Ocean ...
Kenta Suzuki, Masanobu Yamamoto, Yu‐Hyeon Park, Seung‐Il Nam   +3 more
wiley   +1 more source

Biomarker evidence of a serpentinite chemosynthetic biosphere at the Mariana forearc

Communications Earth & Environment
Present-day serpentinization systems, such as that at the Mariana forearc, are prominent sources of reduced volatiles, including molecular hydrogen (H2) and methane (CH4), and are considered analogs for chemosynthetic ecosystems on early Earth.
Palash Kumawat, Elmar Albers, Wolfgang Bach, Frieder Klein, Walter Menapace, Christoph Vogt, Florence Schubotz   +6 more
doaj   +1 more source

Planktonic Lipidome Responses to Aeolian Dust Input in Low-Biomass Oligotrophic Marine Mesocosms

Frontiers in Marine Science, 2017
The effect and fate of dry atmospheric deposition on nutrient-starved plankton in the Eastern Mediterranean Sea (EMS; Crete, 2012) was tested by spiking oligotrophic surface seawater mesocosms (3 m3) with Saharan dust (SD; 1.6 g L−1; 23 nmol NOx mg−1; 2 ...
Travis B. Meador, Nadine I. Goldenstein, Alexandra Gogou, Barak Herut, Stella Psarra, Tatiana M. Tsagaraki, Kai-Uwe Hinrichs   +6 more
doaj   +1 more source

The last forests on Antarctica: Reconstructing flora and temperature from the Neogene Sirius Group, Transantarctic Mountains [PDF]

, 2018
Fossil-bearing deposits in the Transantarctic Mountains, Antarctica indicate that, despite the cold nature of the continent’s climate, a tundra ecosystem grew during periods of ice sheet retreat in the mid to late Neogene (17–2.5 Ma), 480 km from the ...
Ackert, Ashworth, Ashworth, Ashworth, Askin, Askin, Baas, Barrett, Bechtel, Beerling, Bendle, Biellmann, Biellmann, Bowman, Burckle, Bush, Caldicott, Carlquist, Christopher H. Vane, Cline, Cranwell, Cranwell, Dettmann, Diefendorf, Diefendorf, Diefendorf, Diefendorf, Domínguez, Eberle, Eglinton, Ficken, Ficken, Ficken, Fiona L. Gill, Fleming, Francis, Giri, Han, Hautevelle, Hemsley, Hill, Hill, Huang, James B. Riding, Jane E. Francis, Karrer, Kemp, Kolattukudy, Lawver, Lewis, Lewis, Lopes dos Santos, Marchand-Geneste, Mercer, Männistö, Nakamura, Nierop, Nott, Otto, Otto, Otto, Otto, Pancost, Peterse, Peterse, Pollard, Prebble, Pross, Raine, Raquel A. Lopes dos Santos, Retallack, Rhian L. Rees-Owen, Robert J. Newton, Ruza F. Ivanović, Shaver, Simoneit, Sinninghe Damsté, Stroeven, Stránský, Tavendale, Tavendale, Trendel, Volkman, Warny, Webb, Webb, Webb, Weijers, Weijers, Wilmesmeier, Yamamoto, Zachos   +91 more
core   +3 more sources

Genomic and transcriptomic evidence for scavenging of diverse organic compounds by widespread deep-sea archaea [PDF]

, 2015
© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Nature Communications 6 (2015): 8933, doi:10.1038/ncomms9933.Microbial activity is one of the most ...
Anantharaman, Karthik, Baker, Brett J., Breier, John A., Dick, Gregory J., Jain, Sunit, Li, Meng   +5 more
core   +2 more sources