Results 91 to 100 of about 12,911 (237)
Energy Exploration & Exploitation, 2018 As important gas-bearing strata, Proterozoic–Paleozoic marine carbonate successions in the Sichuan Basin have experienced a long diagenetic history and multiphase hydrothermal activities.
Bo Peng +8 more
doaj +1 more source
Tectonics, Volume 45, Issue 6, June 2026.Abstract The assembly and breakup of the supercontinent Rodinia set the stage for Earth system evolution through the Neoproterozoic Era. Laurentia, the central craton in Rodinia, lacks well‐dated paleomagnetic poles between ca. 990 Ma and 780 Ma. In this study, we develop new U‐Pb petrochronology and thermochronology data sets from zircon, garnet ...
Yiming Zhang +6 more
wiley +1 more source
Geologically Recent Formation of Some Tesserae on Venus by Plains Deformation
Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.Abstract Tessera is a pervasively deformed terrain type on Venus generally interpreted as the oldest preserved material on the surface. Large expanses of this terrain type are typically elevated and have been hypothesized to be felsic, perhaps analogous to Earth's continents and even to date from an era with a more Earth‐like climate earlier in Venus ...
Paul K. Byrne +6 more
wiley +1 more source
Paleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.Abstract The Laurasian Seaway comprises a N‐S oriented trans‐Pangaean corridor linking Tethys to the Boreal Sea during the Jurassic, and direction of water flow has been the subject of considerable debate. The Llanbedr (Mochras Farm) borehole, Cardigan Bay Basin, Wales, is a uniquely informative record that comprises an expanded deep‐marine silty ...
M. Jiang +7 more
wiley +1 more source
, 1980 Geophysicists generally agree that one ormore supercontinents were in motion during the Proterozoic. A more controversial issue is whether these supercontinents were at times internally fragmented into smaller crustal units that subsequently collided and
Gibb, R. A. +2 more
core
Macroevolution and macroecology through deep time
The fossil record documents two mutually exclusive macroevolutionary modes separated by the transitional Ediacaran Period. Despite the early appearance of crown eukaryotes and an at least partially oxygenated atmosphere, the pre-Ediacaran biosphere was ...
Butterfield, N. J.
core +1 more source
Improved Constraints on Andean Glaciations From the Lake Titicaca Continental Drilling Record
Paleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.Abstract Long sedimentary records from tropical lakes provide crucial archives for reconstructing the timing and extent of tropical alpine glaciations, yet robust chronologies beyond the radiocarbon limit (ca. 50 ka) remain scarce. Here, we refine the ca. 350 kyr chronology for Lake Titicaca (Peru‐Bolivia) using radiocarbon dating, optically stimulated
Victoria L. Todd +7 more
wiley +1 more source
Molar tooth carbonates and benthic methane fluxes in Proterozoic oceans
Nature Communications, 2016 Molar tooth structures are common in early- to mid-Proterozoic carbonates but extremely rare in rocks younger than 750 Ma. Here, the authors show molar tooth carbonate formation is related to benthic methane fluxes.
Bing Shen +8 more
doaj +1 more source
Methods in Ecology and Evolution, Volume 17, Issue 6, Page 1851-1866, June 2026.Abstract Environmental tracers, including both elemental concentrations and isotope ratios, are widely used to reconstruct the movement patterns of animals throughout landscapes. The methodology involves creating a map that describes the distribution of the environmental tracer across the landscape, an isoscape and then matching the values of the same ...
Michael P. Venarsky +7 more
wiley +1 more source
Strongly Peraluminous Granites across the Archean–Proterozoic Transition [PDF]
, 2019 Strongly peraluminous granites (SPGs) form through the partial melting of metasedimentary rocks and therefore represent archives of the influence of assimilation of sedimentary rocks on the petrology and chemistry of igneous rocks.
Bucholz, Claire E. +1 more
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