Results 71 to 80 of about 8,027 (255)

Disentangling Continental Weathering During the Late Paleozoic Ice Age

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The consumption of atmospheric CO2 through continental weathering played a critical role in shaping the evolution of the late Paleozoic Ice Age (LPIA), presumably driven by the Hercynian orogeny and the evolution of terrestrial plants. However, the relative impacts of these two major drivers to continental weathering remain poorly constrained.
Biao Gao, Guozhen Xu, Wenli Yang, Jitao Chen   +3 more
wiley   +1 more source

A revised northern European Turonian (Upper Cretaceous) dinoflagellate cyst biostratigraphy: Integrating palynology and carbon isotope events [PDF]

, 2014
Organic walled dinoflagellate cyst (dinocyst) assemblage data are presented for a new Turonian regional reference core (Bch-1) drilled at Běchary in the Bohemian Cretaceous Basin, east-central Czech Republic.
Bell, Bloch, Brideaux, Bruce Tocher, Bujak, Burnett, Clarke, Costa, Courtinat, Darren Gröcke, Davey, Davey, Davey, Davey, Davey, David Uličný, Dodsworth, Fensome, FitzPatrick, FitzPatrick, Foucher, Foucher, Foucher, Foucher, Foucher, Foucher, Foucher, Foucher, Foucher, Foucher, Gale, Gale, Gocht, Hardenbol, Harker, Heine, Huan, Ian Jarvis, Ioannides, Jain, Jarvis, Jarvis, Jarvis, Jarvis, Jefferies, Jenkyns, Joo, João Trabucho-Alexandre, Kate Olde, Kirsch, Klein, Lamolda, Lebedeva, Lebedeva, Lentin, Lignum, Lister, MacEachern, Marshall, Martin Pearce, McIntyre, Mitchell, Mohamed, Mortimore, Mortimore, Nøhr-Hansen, Pearce, Pearce, Pearce, Pearce, Prince, Prince, Prössl, Radmacher, Rawson, Richardt, Richardt, Schiøler, Scott, Skupien, Skupien, Soliman, Sprovieri, Svobodová, Svobodová, Sweet, Tocher, Tocher, Tocher, Uličný, Uličný, Uličný, Uličný, Uličný, Valečka, Voigt, Voigt, Voigt, Walaszczyk, Walaszczyk, Walaszczyk, Wendler, Wiese, Wiese, Williams, Williams, Williams, Williams, Wood, Wood, Yun, Čech, Čech   +112 more
core   +2 more sources

A model for the concomitant early formation of dolomite and fibrous clays in coastal bay systems: Evidence from the Eocene (Paris Basin, France)

Sedimentology, Volume 72, Issue 6, Page 1860-1898, October 2025.
ABSTRACT Detailed analysis of Lutetian–Bartonian deposits in the Paris Basin (‘Marnes et Caillasses’ Formation) provides new evidence of concomitant magnesian fibrous clays (palygorskite and sepiolite) and early microcrystalline dolomite. Although relatively uncommon in sedimentary archives, palygorskite and sepiolite are found in a wide range of ...
Julien Talon, Pierre Pellenard, Jean‐Marc Baele, Florence Quesnel, Justine Briais, Alina Iakovleva, Christian Dupuis, Ludovic Bruneau, Emmanuelle Vennin   +8 more
wiley   +1 more source

Ultra-shallow-marine anoxia in an Early Triassic shallow-marine clastic ramp (Spitsbergen) and the suppression of benthic radiation [PDF]

, 2015
Lower Triassic marine strata in Spitsbergen accumulated on a mid-to-high latitude ramp in which high-energy foreshore and shoreface facies passed offshore into sheet sandstones of probable hyperpycnite origin.
Beauchamp, Benoit, Blomeier, Dierk P G, BLOMEIER, DIERK P. G., BOND, DAVID P. G., Bond, David P. G., Grasby, Stephen E., Joachimski, Michael M., Sun, Yadong, Wignall, Paul B.   +8 more
core   +1 more source

The Chemostratigraphy of the Murray Formation and Role of Diagenesis at Vera Rubin Ridge in Gale Crater, Mars, as Observed by the ChemCam Instrument

Journal of Geophysical Research: Planets, 2020
Geochemical results are presented from Curiosity's exploration of Vera Rubin ridge (VRR), in addition to the full chemostratigraphy of the predominantly lacustrine mudstone Murray formation up to and including VRR.

semanticscholar   +1 more source

Carbonate microfacies and transgressive‐regressive sequences of Oxfordian shallow‐water limestones (Korallenoolith, Lower Saxony Basin)

The Depositional Record, Volume 11, Issue 4, Page 1084-1106, September 2025.
The Bisperode section is one of the most expanded and complete sections with shallow‐marine Oxfordian strata in the LSB. This study provides a reference record for shallow‐marine settings and allows for the correlation of the strata from the LSB with Oxfordian deposits distributed elsewhere in the world.
Deyan Zhang, François‐Nicolas Krencker, Stefan Huck, Ulrich Heimhofer   +3 more
wiley   +1 more source

Multiproxy sedimentological and geochemical analyses across the Lower–Middle Pleistocene boundary: chemostratigraphy and paleoenvironment of the Chiba composite section, central Japan

Progress in Earth and Planetary Science, 2021
The Chiba composite section (CbCS) in the Kokumoto Formation, Kazusa Group, central Japan is a thick and continuous marine succession that straddles the Lower–Middle Pleistocene boundary and the well-recognized Matuyama–Brunhes paleomagnetic polarity ...
Kentaro Izumi, Yuki Haneda, Yusuke Suganuma, Makoto Okada, Yoshimi Kubota, Naohisa Nishida, Moto Kawamata, Takuya Matsuzaki   +7 more
doaj   +1 more source

Earthquake slip surfaces identified by biomarker thermal maturity within the 2011 Tohoku-Oki earthquake fault zone. [PDF]

, 2020
Extreme slip at shallow depths on subduction zone faults is a primary contributor to tsunami generation by earthquakes. Improving earthquake and tsunami risk assessment requires understanding the material and structural conditions that favor earthquake ...
Kirkpatrick, James D, Polissar, Pratigya J, Rabinowitz, Hannah S, Rowe, Christie D, Savage, Heather M   +4 more
core  

Biostratigraphy and correlation of the Cambrian Series 2 (Stage 4) to Miaolingian (Wuliuan) Thorntonia Limestone, south‐eastern Georgina Basin (Queensland, Australia)

Papers in Palaeontology, Volume 11, Issue 5, September/October 2025.
Abstract The Australian Cambrian stratigraphic record is one of the most complete for any continent. However, there is a general division, with older Cambrian rocks in South Australia (predominantly Terreneuvian, Stage 2 to Miaolingian, Wuliuan) and younger rocks in northern Australia (mostly latest Series 2, Stage 4 and younger), with minimal ...
Marissa J. Betts, Patrick M. Smith, John R. Paterson, Evelyn M. Mervine, Daniel A. Stirling, James D. Holmes   +5 more
wiley   +1 more source

Chemostratigraphic implications of spatial variation in the Paleocene‐Eocene Thermal Maximum carbon isotope excursion, SE Bighorn Basin, Wyoming

Geochemistry, Geophysics, Geosystems, 2013
The Paleocene‐Eocene Thermal Maximum (PETM) is marked by a prominent negative carbon isotope excursion (CIE) of 3–5‰ that has a characteristic rapid onset, stable body, and recovery to near pre‐CIE isotopic composition.
Allison A. Baczynski, Francesca A. McInerney, Scott L. Wing, Mary J. Kraus, Jonathan I. Bloch, Doug M. Boyer, Ross Secord, Paul E. Morse, Henry C. Fricke   +8 more
doaj   +1 more source