Results 91 to 100 of about 1,711 (160)

Distribution of branched glycerol dialkyl glycerol tetraether (brGDGT) lipids from soils and sediments from the same watershed are distinct regionally (central Chile) but not globally

Frontiers in Earth Science
Quantitative reconstructions of past continental climates are vital for understanding contemporary and past climate change. Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are unique bacterial lipids that have been proposed as universal ...
Molly D. O’Beirne, Wesley P. Scott, Sergio Contreras, Sergio Contreras, Sergio Contreras, A. Araneda, E. Tejos, J. Moscoso, Josef P. Werne   +8 more
doaj   +1 more source

A Late Miocene Terrestrial Temperature History for the Northeastern Tibetan Plateau's Period of Tectonic Expansion

Geophysical Research Letters, 2019
During the Late Miocene, the climate patterns and ecosystems of continental land masses experienced crucial transitions, but whether the principal driver was regional tectonic forcing or a decline in CO2 concentrations remains debated.
Chihao Chen, Yan Bai, Xiaomin Fang, Haichao Guo, Qingquan Meng, Weilin Zhang, Pengchao Zhou, Azamdzhon Murodov   +7 more
doaj   +1 more source

Multi-Proxy Constraints on the Sources and Spatial Variations of Organic Matter in Surface Sediments from Lingdingyang, Pearl River Estuary: Evidence from Stable Isotopes and GDGTs

Journal of Marine Science and Engineering
To elucidate the sources and spatial variations in organic matter in surface sediments from Lingdingyang of the Pearl River Estuary, 18 surface sediment samples were collected and analyzed for obtaining total organic carbon (TOC), total nitrogen (TN ...
Chang Liu, Yuan Gao, Yaoping Wang, Zike Zhao, Jia Xia   +4 more
doaj   +1 more source

Archaeal hydroxylated isoprenoid GDGTs in Asian lake sediments: A new tool for terrestrial paleotemperature reconstructions

Hydroxylated isoprenoid GDGTs (OH-GDGTs) have emerged as a novel tool for reconstructing sea surface temperatures. However, when using marine OH-GDGT calibration in lacustrine settings, it leads to a significant overestimation of temperatures ...
Jie Wu (14376771)
core   +2 more sources

Glycerol configurations of environmental GDGTs investigated using a selective sn2 ether cleavage protocol

, 2019
The glycerol configurations of glycerol dialkyl glycerol tetraethers (GDGTs) in environmental samples were investigated using a selective sn2 ether cleavage protocol.
Russell, David A., Summons, Roger E, Bonfio, Claudia, Liu, Xiao-Lei   +3 more
core   +1 more source

Lipid hydrogen isotope compositions primarily reflect growth water in the model archaeon Sulfolobus acidocaldarius

Applied and Environmental Microbiology
The stable hydrogen isotope composition (δ2H) of lipid biomarkers can track environmental processes and remain stable over geologically relevant time scales, enabling studies of past climate, hydrology, and ecology.
Carolynn M. Harris, Sebastian Kopf, Jeemin H. Rhim, Alec Cobban, Felix J. Elling, Xiahong Feng, Jamie McFarlin, Yuki Weber, Yujiao Zhang, Alice Zhou, Harpreet Batther, Ann Pearson, William D. Leavitt   +12 more
doaj   +1 more source

GDGTs in sediment core Haem13 from lake Hämelsee

This dataset provides glycerol dialkyl glycerol tetraethers (GDGTs) concentrations for the Lateglacial sediment sequence retrieved from Lake Hämelsee (Germany) in 2013. GDGTs concentrations (ng/g) are presented against both depth (m) and age (cal yr. BP).
Engels, Stefan, ter Schure, Anneke, Lane, Christine S, Wagner-Cremer, Frederike, de Bruijn, Renee, Müller, Meike, Pueschel, Ashley, Jones, Gwydion, Staff, Richard A, Bouwman, Annerieke, Collins, James A, Peters, Tom, Heiri, Oliver, Peterse, Francien, Hoek, Wim Z, van den Bos, Valerie, Baneschi, Ilaria, Merkt, Josef, Laug, Andreas, Ramsey, Christopher Bronk, Muschitiello, Francesco, Hubay, Katalin, Brogan, Eilis, Haliuc, Aritina, Jones, Vivienne   +24 more
core   +1 more source

GDGTs from sediment core PS2458-4, Laptev Sea, Arctic Ocean

These data have been obtained from core PS2458-4 (78°10.0'N, 133°23.9'E; 983 m). The core was retrieved in 1993 from the eastern Laptev Sea continental margin. The dataset contains biomarkers concentrations (GDGTs)
Grotheer, Hendrik, Mollenhauer, Gesine, Hefter, Jens, Wollenburg, Jutta Erika, Tesi, Tommaso, Nicolas, Arnaud   +5 more
core   +1 more source

Machine learning-based paleobathymetric reconstructions using archaeal lipid biomarkers. [PDF]

Sci Adv
Zhou J, Kang D, Chen S, Dong L.
europepmc   +1 more source

Multi-molecular ¹⁴C evidence for mineral control on terrestrial carbon storage and export. [PDF]

Philos Trans A Math Phys Eng Sci, 2023
Gies H, Lupker M, Galy V, Hemingway J, Boehman B, Schwab M, Haghipour N, Eglinton TI.   +7 more
europepmc   +1 more source