Results 91 to 100 of about 2,811 (192)

Resolving Micrometre‐Scale Zircon Growth in Silicic Systems by 7 μm LA‐MC‐ICP‐MS U‐Pb Dating: Linking Petrology and Geochronology in Silicic Volcanic and Granitic Rocks from Victoria, Australia

Geostandards and Geoanalytical Research, Volume 50, Issue 3, Page 625-647, September 2026.
Key Points 7 μm spot‐diameter LA‐MC‐ICP‐MS analyses yield accurate zircon U‐Pb ages. 1013 Ω amplifier resistors improve low‐signal Pb measurements. Saturn correction protocols minimise down‐hole fractionation effects. We present a systematic evaluation of high spatial‐resolution zircon U‐Pb dating using a Thermo Scientific Neoma multi‐collector ICP‐MS ...
Cristiano Lana, John D. Clemens
wiley   +1 more source

(Ultra)high‐Pressure Metamorphism in Sedimentary Versus Basaltic Rocks: Insights From a Variscan Mélange in the South Carpathians

Journal of Metamorphic Geology, Volume 44, Issue 8, Page 585-610, September 2026.
ABSTRACT Reconstructing the pressure–temperature–time (P–T–t) evolution of (ultra)high‐pressure rocks is essential for constraining subduction and collisional dynamics. Subduction zones are often investigated using basic eclogites, whereas nonbasic high‐pressure rocks remain comparatively understudied, potentially hindering a comprehensive ...
Otavio S. G. Silva, Bruno V. Ribeiro, Gavril Săbău, Fabricio Caxito, Paulo A. de Paiva‐Silva, Pierre Lanari, George Luvizotto, Mahyra Tedeschi   +7 more
wiley   +1 more source

Geophysical update of the diameter of the Zhamanshin impact structure, Kazakhstan

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2284-2302, September 2026.
Abstract The rim of the 0.9‐Ma‐old Zhamanshin impact crater in Kazakhstan is considered to be almost completely exposed via a series of hills surrounding a central flat area, indicating an apparent diameter of 14 km. This would make Zhamanshin the second largest impact crater of the Quaternary period. However, the overall geometry of these hills is not
Yoann Quesnel, Dilyara M. Kuzina, Jérôme Gattacceca, Minoru Uehara, Ayrat G. Kharisov, Dmitry D. Badyukov, Pierre Rochette   +6 more
wiley   +1 more source

Microbial N₂O Reduction in Sulfidic Waters: Implications for Proterozoic Oceans. [PDF]

Geobiology
Buessecker S, Klos AS, Quan ME, Finch AH, Sobol MS, Evans GN, Anbar AD, Kaçar B, Dekas AE.   +8 more
europepmc   +1 more source

Environmental phylogenetics supports a steady diversification of crown eukaryotes starting from the mid-Proterozoic. [PDF]

Proc Natl Acad Sci U S A
Sandin MM, Cohen PA, Morlon H, Burki F.
europepmc   +1 more source

Formation of iron oxide-apatite deposits triggered by magmatic assimilation of evaporitic sulfate. [PDF]

Nat Commun
Peters STM, Feng D, Troll VR, Pack A, Tornos F, Andersson UB, Lehmann B, Di Rocco T.   +7 more
europepmc   +1 more source

An early diverging SQR enzyme in Antarctic <i>Gloeobacterales</i> indicates sulfide tolerance in thylakoid-lacking cyanobacteria. [PDF]

Microbiol Spectr
Hambücken L, Sudianto E, Verleyen E, Saw JH, Baurain D, Cornet L.   +5 more
europepmc   +1 more source

Ministromatolite Modular Reef Framework, ~1.5 Ga, Yesanpo, North China. [PDF]

Geobiology
Tang D, Shi X, Sun L, Riding R.
europepmc   +1 more source

The Origin and Early Evolution of Fungi: Challenges, Inferences, and Principles. [PDF]

Annu Rev Cell Dev Biol
Rokas A.
europepmc   +1 more source

Latitudinal manganese gradient dynamics associated with Earth's major ice ages. [PDF]

Nat Commun
Wang X, Pohl A, Rickaby REM, Lu Z.
europepmc   +1 more source