Results 111 to 120 of about 25,161 (234)

Detrital zircon ages, Lu‐Hf isotopes of zircon grains, Sr‐Nd isotopes on whole rock and geochemistry of Campanian turbidites in the Eastern Pontides (NE Türkiye): A provenance assessment and Gondwana records

The Depositional Record, Volume 12, Issue 4, September 2026.
These findings confirm that the Campanian‐aged Bozbent Member turbiditic sequence in the Eastern Pontides was deposited in an extensional fore‐arc basin and therefore exhibits the petrographic and geochemical characteristics of passive margin sandstones.
Çiğdem Saydam Eker, Cem Yücel, Abdullah Kaygusuz, Emre Aydınçakır, Youn‐Joong Jeong, Sinan Yılmazer, Kadir Sünnetçi   +6 more
wiley   +1 more source

Diagenetic evolution and geochemical controls on carbonate platform development in the Middle Eocene Jahrum Formation, Zagros Basin

The Depositional Record, Volume 12, Issue 4, September 2026.
Integrated petrographic, mineralogical and geochemical workflow for reconstructing the diagenetic evolution of the Middle Eocene Jahrum Formation in the Zagros Basin. The diagram illustrates the methodological framework combining field observations, laboratory analyses (XRD, SEM‐EDS, stable isotopes, cathodoluminescence), pyrite framboid geochemistry ...
Mehdi Baniasadi, Vahid Ahmadi, Mohammad Reza Esmaeilbeig, Pooria Kianoush   +3 more
wiley   +1 more source

Microfabric controls on the preservation and erosion of Late Pleistocene freshwater microbialites in northwestern Patagonia, Argentina

The Depositional Record, Volume 12, Issue 4, September 2026.
Microfabric distribution controls porosity, preservation and erosion in Late Pleistocene microbialites from the Maquinchao Basin (Argentina). Differential preservation of laminated and shrub fabrics shapes the present morphology of the carbonate build‐ups and influences their palaeoenvironmental interpretation.
Inès Eymard, María del Pilar Alvarez, Andrés Bilmes, Gabriela Cusminsky, Negar Haghipour, Timothy Eglinton, Crisogono Vasconcelos, Daniel Ariztegui   +7 more
wiley   +1 more source

Decadal Bowhead Whale Baleen Stable Isotope and Hormone Chronologies (1985–2010) Provide Insight Into Arctic Ecosystem Change

Global Change Biology Communications, Volume 1, Issue 3, September 2026.
Long‐term chronologies constructed from individual bowhead baleen plates reveal stable isotope declines consistent with regional Arctic food web or productivity changes superimposed on global anthropogenic C and N inputs, while relatively stable hormone concentrations over the same period provide no evidence of a concomitant increase in physiological ...
Cory J. D. Matthews, Justine M. Hudson, Nadine S. J. Lysiak, Kathleen E. Hunt, Mads Peter Heide‐Jørgensen, Steven H. Ferguson   +5 more
wiley   +1 more source

Altered Coral‐Turf Algae Competition Leads to the Passive Dissolution of Coral Skeletons Under Ocean Acidification

Global Change Biology Communications, Volume 1, Issue 3, September 2026.
Under ocean acidification, turf algae are favored over corals, shifting the competition outcome and decreasing coral survival. The local pH microenvironment under the turf, resulting from associated biological activity, drives the dissolution of the coral carbonate skeleton.
Joshua M. Heitzman, Layla Iijima, Guinther Mitushasi, Davide Spatafora, Shigeki Wada, Ben P. Harvey, Haruko Kurihara, Sylvain Agostini   +7 more
wiley   +1 more source

Sedimentary lycopane/n‐C31 ratio as a proxy for bottom water hypoxia in coastal ocean

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract Bottom‐water hypoxia on continental shelves is intensifying under climate change and eutrophication, yet long‐term records remain scarce. Here we show that the sedimentary lycopane/n‐C31 ratio reliably records bottom‐water oxygenation in the seasonally hypoxic Yangtze River Estuary.
Qingnan Song, Huamao Yuan, Jinming Song, Guiling Zhang, Fengmin Pan, Xuegang Li, Liqin Duan   +6 more
wiley   +1 more source

Early Diagenesis Modelling with MEDUSA

, 2017
The basic funcionality of the Model of Early Diagenesis in the Upper Sediment (MEDUSA) is presented ...
Munhoven, Guy
core  

Reply to Comment by John J.G. Reijmer, Arnoud Slootman & Max de Kruijf on Baas, J.H., Hewitt, W., Lokier, S. and Hendry, J. (2025) Coming to light: How effective are sediment gravity flows in removing fine suspended carbonate from reefs? The Depositional Record, 11, 583–598. DOI: 10.1002/dep2.319

The Depositional Record, Volume 12, Issue 4, September 2026.
Jaco H. Baas, Stephen Lokier, James Hendry   +2 more
wiley   +1 more source

Calcareous Benthic Foraminifera Under Ocean Alkalinity Enhancement: Synthesis, Knowledge Gaps, and Future Research Agenda

Earth's Future, Volume 14, Issue 9, September 2026.
Abstract Limiting global warming to 1.5°C will require carbon dioxide removal, and Ocean Alkalinity Enhancement (OAE) is increasingly being explored as a marine carbon dioxide removal pathway. However, benthic biological responses remain much less constrained than water‐column processes and planktonic responses, even though calcareous benthic ...
George Henry, Daniela Basso
wiley   +1 more source

Formation and Alteration of Magnesite Nodules From Kunwarara, Queensland, Australia, as an Analog to Mg‐Carbonate Formation on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Magnesite (MgCO3) is a magnesium (Mg) carbonate mineral that records the aqueous environmental conditions of its formation. On Earth, magnesite forms in metamorphic, diagenetic or pedogenic environments, and distinguishing between these environments is critical for understanding the fluid chemistry during magnesite precipitation. Mg carbonates
E. L. Cardarelli, T. M. Present, P. M. Vasconcelos, L. C. Kah, C. Swindle, S. Bhattacharjee, K. Farley   +6 more
wiley   +1 more source