Results 1 to 10 of about 3,343 (212)
Rapid grain boundary diffusion in foraminifera tests biases paleotemperature records [PDF]
Communications Earth & Environment, 2023 The oxygen isotopic compositions of fossil foraminifera tests constitute a continuous proxy record of deep-ocean and sea-surface temperatures spanning the last 120 million years.
Arthur Adams +10 more
doaj +5 more sources
Frontiers in Earth Science, 2022 Quantitative reconstruction of regional paleotemperature is the key to understanding temperature change and its driving mechanisms. In this study, 133 phytolith samples were collected as proxy indicators from lacustrine sediments of the Zhunzhahanjilin ...
Qingyu Guan, Dongmei Jie, Kai Ning
exaly +3 more sources
Shiyou shiyan dizhi, 2023 From the Late Carboniferous to the end of Middle Permian, the most intense glacial event in history of Phanerozoic occurred and it is also the last transition period from icehouse stage to greenhouse stage in geological history.
Jianping FAN +12 more
doaj +2 more sources
Carbon and oxygen isotope characteristics of carbonate rocks in the Mesoproterozoic Jixian System of the Ordos Basin and their implications [PDF]
Scientific Reports, 2023 The paleoenvironment of Jixian carbonate rocks in the Mesoproterozoic Ordos Basin is studied by carbon and oxygen isotope analyses, diagenetic environment analysis, and the restoration of paleosalinity and paleotemperature.
Liu Xiaofeng +5 more
doaj +2 more sources
Ocean temperatures through the Phanerozoic reassessed [PDF]
Scientific Reports, 2022 The oxygen isotope compositions of carbonate and phosphatic fossils hold the key to understanding Earth-system evolution during the last 500 million years. Unfortunately, the validity and interpretation of this record remain unsettled.
Ethan L. Grossman, Michael M. Joachimski
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New genomic insights into long-chain alkenone biosynthesis by the coccolithophorid marine alga Gephyrocapsa huxleyi [PDF]
BMC GenomicsBackground Gephyrocapsa huxleyi is a coccolithophoric haptophyte widespread across most marine ecosystems that plays an important role in the carbon cycle. G.
Ruth Pérez Gallego +5 more
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Environmental DNA sheds new insight on molecular adaptation of foraminifera to temperature from laboratory‐controlled culture experiment [PDF]
Ecology and EvolutionForaminifera is the most important temperature proxy of the ocean on long time scales. However, the absence of temperature‐controlled experiments at different water depths hinders the advancement of paleotemperature reconstruction with foraminifera from ...
Haotian Li +4 more
doaj +2 more sources
Technical Note: Past and future warming – direct comparison on multi-century timescales [PDF]
Climate of the Past, 2022 In 2013, the Intergovernmental Panel on Climate Change concluded that Northern Hemisphere temperatures had reached levels unprecedented in at least 1400 years.
D. S. Kaufman, N. P. McKay
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2023 The geochemical and ultrastructural properties of thermally altered skeletal carbonate are expected to be compromised to varying degrees by disequilibrium processes between solids and the ambient aqueous fluids.
Philip Staudigel +7 more
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Growing season thermal climate reconstructed at six pine stands in northern Lapland [PDF]
Bulletin of the Geological Society of Finland, 1994 At the northern coniferous timberline of the boreal region, growing season temperature is generally the major environmental factor limiting the growth processes of Scots pine (Pinus sylvestris L.). Variations in annual ring-widths of pines can be related
M. Lindholm, J. Meriläinen
doaj +1 more source