Results 41 to 50 of about 726 (131)

Paleogeography of Accumulation of the Middle-Upper Permian Red Mudstones in the Kazan Volga Region [PDF]

Учёные записки Казанского университета: Серия Естественные науки, 2016
In this work we focus on sedimentology, mineralogy, grain size, and geochemistry of red mudstones of the Urzhumian (Wordian) and Severodvinian (Capitinian) reference section of the Monastyrskii ravine to specify their depositional settings and ...
F.A. Mouraviev, M.P. Arefiev, V.V. Silantiev, B.I. Gareev, G.A. Batalin, M.N. Urazaeva, T.V. Kropotova, I.B. Vybornova   +7 more
doaj  

Micromorphology of the Late and Middle Pleistocene paleosols of the central East European Plain

Geography, Environment, Sustainability, 2019
In this paper we focused on the micromorphology of the Late and Middle Pleistocene paleosols exposed in twelve loess-paleosol sequences sections in the central part of the East European Plain. Each studied paleosol complex known as Mesin (MIS 5), Kamenka
P. G. Panin, S N. Timireva, T. D. Morozova, A. A. Velichko   +3 more
doaj   +1 more source

Neogene Stable Carbon Isotopic Evolution of the Atmosphere and Low‐Latitude Surface Ocean

Paleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.
Abstract We reconstruct the stable carbon isotopic composition of Neogene surface ocean dissolved inorganic carbon (δ13CDIC) and atmospheric CO2 (δ13CATM) to serve as input for carbon cycle modeling and proxy‐related studies. The largely observation‐based δ13CDIC reconstructions are inferred from Neogene planktic foraminifer carbonate δ13C records with
J. A. van Dam, G.‐J. Reichart, A. Sluijs   +2 more
wiley   +1 more source

Carbonate accumulation morphology in a soil chronosequence in the southern Pre-Ural, Russia: Significance for Holocene paleoenvironmental reconstruction

Revista Mexicana de Ciencias Geológicas, 2018
A chronosequence consisting of paleosols buried under kurgans of the Savromatian (2,500–2,600 yr BP) and the Late Sarmatian Time (1,700–1,800 yr BP), along with the modern Dark Kastanozems was studied in a dry steppe area of the southern Pre-Ural region,
Olga S. Khokhlova, Alsu M. Kouznetsova
doaj  

The Geologic History of the Chehalis Forearc Basin, Washington State, USA

Tectonics, Volume 45, Issue 7, July 2026.
Abstract The Chehalis basin is located between the Cascade arc and the Coast Range in southwest Washington State. It consists of sedimentary and volcanic rocks deposited throughout the Cenozoic and is underlain by the Siletzia terrane, a thick, large igneous province accreted in the Eocene.
R. L. Moe, J. Bershaw, L. M. Staisch, A. R. Streig   +3 more
wiley   +1 more source

Triple Oxygen and Hydrogen Isotopes of Soil Water Across Climates, Seasons, and Depths

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Soil waters are a central component of the terrestrial water cycle. Their δ2H, δ18O, and d‐excess values contain rich information about hydroclimate, including the source of moisture and its evaporative history. Paleoclimate workers seek to investigate ancient hydroclimates via triple oxygen isotope geochemistry, termed Δ′17O, which is ...
Julia R. Kelson, Naomi E. Levin, David P. Huber, Lixin Jin, Hugo A. Gutiérrez Jurado, Jennifer L. Pierce   +5 more
wiley   +1 more source

Quantifying Post‐Fire Aeolian Sediment Flux Dynamics Following the 2024 Smokehouse Creek Fire: The Role of Wind Seasonality, Thermal Clay Mineral Degradation, and Surface Armoring

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 7, July 2026.
Abstract Fire in drylands is commonly associated with enhanced aeolian erosion due to the abrupt loss of vegetation cover. However, the relative contributions of fire‐induced mineralogical degradation of soils, seasonal wind forcing and surface armoring to post‐fire wind erosion remain poorly constrained.
Abinash Bhattachan, Branimir Šegvić, Ashten Fenton, Riley Young, Bethany Morgan, Rocco Bowen, Emily Doyle, John E. Stout, R. Scott Van Pelt   +8 more
wiley   +1 more source

New Dinosaur Ichnological, Sedimentological, and Geochemical Data from a Cretaceous High-Latitude Terrestrial Greenhouse Ecosystem, Nanushuk Formation, North Slope, Alaska

Geosciences
The Nanushuk Formation (Albian–Cenomanian) crops out over much of the central and western North Slope of Alaska, varying from ≈1500 to ≈250 m thick from west to northeast.
Anthony R. Fiorillo, Paul J. McCarthy, Grant Shimer, Marina B. Suarez, Ryuji Takasaki, Tsogtbaatar Chinzorig, Yoshitsugu Kobayashi, Paul O’Sullivan, Eric Orphys   +8 more
doaj   +1 more source

Response of Soils and Soil Ecosystems to the Pennsylvanian–Permian Climate Transition in the Upper Fluvial Plain of the Dunkard Basin, Southeastern Ohio, USA

Geosciences, 2018
Direct exposure of paleosols to the atmosphere during formation make them ideal for reconstructing paleoclimate. Paleosol and ichnofossil properties are dependently linked making it important to study them in tandem, to avoid errors in interpretation ...
Daniel I. Hembree, Jennifer L. Carnes
doaj   +1 more source

Structural Evolution of a Polyphase Salt‐Tectonic System From Syn‐Rift Extension to Syn‐Orogenic Deformation in the Middle Atlas (Oum Er Rbia Region, Morocco)

Tectonics, Volume 45, Issue 7, July 2026.
Abstract Salt tectonics has received little attention in the Middle Atlas, despite the widespread occurrence of Triassic evaporites and their potential to exert first‐order control on basin architecture and deformation. This study presents the first integrated analysis of polyphase salt tectonics in the Middle Atlas, focusing on the Oum Er‐Rbia sector,
N. Saspiturry, G. Ballas, M. El Ghorfi, S. Echat, B. Viguier, N. Patris, A. Rhoujjati, N. Rhoujjati, A. Charbaoui, L. Hanich, V. Léonardi   +10 more
wiley   +1 more source