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Biogeographic Insights Into the Late Miocene Diversification of the Giant Deep-Ocean Amphipod .
Ecol Evol
January 2025
Instituto Milenio de Oceanografía (IMO) Universidad de Concepción Concepción Chile.
Mechanisms driving the spatial and temporal patterns of species distribution in the Earth's largest habitat, the deep ocean, remain largely enigmatic. The late Miocene to the Pliocene (~23-2.58 Ma) is a period that was marked by significant geological, climatic, and oceanographic changes.
View Article and Find Full Text PDFNorthern Scandinavian mountains supported by a low-grade eclogitic crustal keel.
Nat Commun
January 2025
Department of Earth Science, University of Bergen, Bergen, Norway.
Plate tectonics predicts that mountain ranges form by tectono-magmatic processes at plate boundaries, but high topography is often observed along passive margins far from any plate boundary. The high topography of the Scandes range at the Atlantic coast of Fennoscandia is traditionally assumed isostatically supported by variation in crustal density and thickness. Here we demonstrate, by our Silverroad seismic profile, that the constantly ~44 km thick crust instead is homogenous above the Moho, and Pn-velocity abruptly change from 7.
View Article and Find Full Text PDFA key question in the planetary sciences centers on the divergence between the sibling planets, Venus and Earth. Venus currently does not operate with plate tectonics, and its thick atmosphere has led to extreme greenhouse conditions. It is unknown if this state was set primordially or if Venus was once more Earth-like.
View Article and Find Full Text PDFWhat we can learn about Mars from the magnetism of returned samples.
Proc Natl Acad Sci U S A
January 2025
School of GeoSciences, University of Edinburgh, Edinburgh EH9 3FE, United Kingdom.
The Red Planet is a magnetic planet. The Martian crust contains strong magnetization from a core dynamo that likely was active during the Noachian period when the surface may have been habitable. The evolution of the dynamo may have played a central role in the evolution of the early atmosphere and the planet's transition to the current cold and dry state.
View Article and Find Full Text PDFPaleomagnetic evidence for Neoarchean plate mobilism.
Nat Commun
December 2024
KoBold Metals, Berkeley, CA, USA.
Plate tectonics is a unique feature of Earth, but its proposed time of initiation is still controversial, with published estimates ranging from ca. 4.2 to 0.
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