Results 21 to 30 of about 5,988,743 (297)

Palaeoenvironmental signatures revealed from rare earth element (REE) compositions of vertebrate microremains of the Vesiku Bone Bed (Homerian, Wenlock), Saaremaa Island, Estonia [PDF]

, 2015
The Estonian Journal of Earth Sciences is an open access journal and applies the Creative Commons Attribution 4.0 International License CC BY to all its papers (http://creativecommons.org/licenses/by/4.0/).
Alberto Pérez-Huerta, Zigaite, Z, Jeffries, T, Fadel, A, Ahlberg, PE, Alexandre Fadel, Živilė Žigaitė, Teresa Jeffries, Henning Blom, Perez-Huerta, A, Blom, H, Tiiu Märss, Maersse, T, Per Erik Ahlberg, Jeffries, Teresa, Blom, Henning,, Ahlberg, Per Erik,, Perez-Huerta, Alberto, Maersse, Tiiu, Fadel, Alexandre,, Zigaite, Zivile,   +20 more
core   +2 more sources

Silica Precipitation in a Wet–Dry Cycling Hot Spring Simulation Chamber

Life, 2020
Terrestrial hot springs have emerged as strong contenders for sites that could have facilitated the origin of life. Cycling between wet and dry conditions is a key feature of these systems, which can produce both structural and chemical complexity within
Andrew Gangidine, Jeff R. Havig, Jeffrey S. Hannon, Andrew D. Czaja   +3 more
doaj   +1 more source

Photosynthesis and early Earth [PDF]

Current Biology, 2015
Life has been built on the evolution and innovation of microbial metabolisms. Even with our scant understanding of the full diversity of microbial life, it is clear that microbes have become integral components of the biogeochemical cycles that drive our planet.
openaire   +2 more sources

Evaluation of Satellite Precipitation Estimates over the South West Pacific Region

Remote Sensing, 2021
Rainfall estimation over the Pacific region is difficult due to the large distances between rain gauges and the high convection nature of many rainfall events. This study evaluates space-based rainfall observations over the South West Pacific Region from
Ashley Wild, Zhi-Weng Chua, Yuriy Kuleshov   +2 more
doaj   +1 more source

There were no large volumes of felsic continental crust in the early Earth [PDF]

, 2017
New model growth curves for the continental crust based upon Hf-isotopes in zircon suggest that large volumes of felsic continental crust were present in the Hadean and early Archaean.
Hugh Rollinson, Rollinson, Hugh
core   +1 more source

Behaviourally modern humans in coastal southern Africa experienced an increasingly continental climate during the transition from Marine Isotope Stage 5 to 4

Frontiers in Earth Science, 2023
Linking human technological and behavioural advances to environmental changes is challenging, as it requires a robust understanding of past climate at local scales.
Ozan Mert Göktürk, Ozan Mert Göktürk, Margit H. Simon, Margit H. Simon, Margit H. Simon, Stefan Pieter Sobolowski, Stefan Pieter Sobolowski, Zhongshi Zhang, Zhongshi Zhang, Willem Van Der Bilt, Pål Tore Mørkved, William J. D’Andrea, Karen L. van Niekerk, Karen L. van Niekerk, Christopher S. Henshilwood, Christopher S. Henshilwood, Simon J. Armitage, Simon J. Armitage, Eystein Jansen, Eystein Jansen, Eystein Jansen   +20 more
doaj   +1 more source

A comparison of the spatial heterogeneities of surface fluxes simulated by INLAND model with observations at a valley and a nearby plateau stations in Central Amazon Forest

SN Applied Sciences, 2022
Article Highlights This manuscript draws attention to the spatial heterogeneity in Amazon forest mosaic and its effects on the ecosystem exchanges; The inclusion of a lumped unconfined aquifer model is essential to simulate properly the water balance in ...
Elisângela Broedel, Celso von Randow, Luz Adriana Cuartas, Prakki Satyamurty, Alessandro Carioca de Araújo, Luiz Antônio Cândido, Javier Tomasella, Antônio Donato Nobre, Etienne Tourigny   +8 more
doaj   +1 more source

The Early Devonian (Emsian) acrotretid microbrachiopod Opsiconidion minor Popov, 1981, from the Alaska/Yukon Territory border and Novaya Zemlya [PDF]

Estonian Journal of Earth Sciences, 2020
New records of the poorly known acrotretid (Biernatidae) microbrachiopod Opsiconidion minor Popov are described from middle Emsian strata of the Ogilvie Formation in east-central Alaska and the adjacent Yukon Territory, Canada, and compared with new ...
Lars E. Holmer, Robert B. Blodgett, Yue Liang, Zhifei Zhang   +3 more
doaj   +1 more source

Copper isotope evidence for large-scale sulphide fractionation during Earth’s differentiation [PDF]

, 2015
The differentiation of Earth into a metallic core and silicate mantle left its signature on the chemical and isotopic composition of the bulk silicate Earth (BSE).
Savage, P.S., Siebert, J., Badro, J., Moynier, F., Puchtel, I.S., Chen, H., Savage, Paul S., Shofner, G., Badro, James, Savage, P.S.; id_orcid   +9 more
core   +2 more sources

Camenellan tommotiids from the Cambrian Series 2 of East Antarctica: Biostratigraphy, palaeobiogeography, and systematics [PDF]

Acta Palaeontologica Polonica, 2021
Cambrian Series 2 shelly fossils from thick carbonate successions in East Antarctica have received limited systematic treatment through the 20th century.
Thomas M. Claybourn, Christian B. Skovsted, Marissa J. Betts, Lars E. Holmer, Lucy Bassett-Butt, Glenn A. Brock   +5 more
doaj   +1 more source