Results 91 to 100 of about 9,317 (244)
Geobiology, Volume 24, Issue 1, January/February 2026.ABSTRACT The Ediacaran–Cambrian boundary, which precedes one of the most significant biotic diversification events in Earth's history, is associated with a global negative carbon isotope excursion termed the BAsal Cambrian carbon isotope Excursion (BACE).
Watsawan Chanchai +6 more
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The Astronomical JournalThe chemical makeup of Earth’s atmosphere during the Archean (4–2.5 Ga) and Proterozoic eon (2.5–0.5 Ga) contrast considerably with the present-day: the Archean was rich in carbon dioxide and methane, and the Proterozoic had potentially higher amounts of
Armen Tokadjian, Renyu Hu, Mario Damiano
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Journal of Metamorphic Geology, Volume 44, Issue 1, Page 20-46, January 2026.ABSTRACT Elevated heat flow associated with mafic magmatism in accretionary orogens has often been proposed as a driving mechanism for (ultra)high‐temperature (UHT) metamorphism and anatexis. The Sancheong–Hadong complex, located in the southern Yeongnam Massif, Korea, consists of a ca.
Yuyoung Lee +3 more
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Physiology of nitrogen: A life or death matter
Experimental Physiology, Volume 111, Issue 1, Page 270-282, 1 January 2026.Abstract With each breath, four out of every five molecules we inspire are nitrogen (N2), since this gas constitutes ∼80% of the atmospheric air that surrounds us. Despite its abundance and unlike molecular oxygen, N2 has traditionally held less appeal among physiologists given its lack of reactivity and corresponding inability to support combustion or
Damian M. Bailey +2 more
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Secular Changes in the Occurrence of Subduction During the Archean
Geophysical Research LettersSubduction processes play a pivotal role in facilitating material exchange between the crust and mantle, contributing to the growth of continents. However, the onset and evolution of subduction remain hotly debated.
Chun‐Tao Liu +2 more
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Was H2O2 generated before oxygenic photosynthesis?
Redox BiologyWe obviously agree with Wu et al. that H2O2 might accumulate in the Archean land waters devoid of Fe2+. We do disagree on the topic of the half-life of H2O2, as the work cited in support for a longer half-live is not relevant to the conditions in the ...
Willem H. Koppenol, Helmut Sies
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Data‐Driven Investigation Reveals Subaerial Proportion of Basalts Since the Early Archean
Geophysical Research LettersThe subaerial exposure of the modern continental crust through time remains intensely debated, with estimates of the first exposure ranging from the late Archean to the Neoproterozoic.
Chun‐Tao Liu +2 more
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Composition of iron oxides in Archean and Paleoproterozoic mafic-ultramafic hosted Ni-Cu-PGE deposits in northern Fennoscandia: application to mineral exploration [PDF]
, 2020 Marko Moilanen +7 more
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