Results 51 to 60 of about 5,112 (179)

The effects of bioturbation on porewater chemistry and early marine diagenesis: Evidence from a modern intertidal zone in Abu Dhabi, U.A.E.

Sedimentology, EarlyView.
ABSTRACT Early marine carbonate cements generally form in CaCO3‐supersaturated seawater at the seabed or shallow burial depths, resulting in syn‐sedimentary cemented firmgrounds and hardgrounds. The processes controlling early marine diagenesis are complex, particularly in coastal environments where geochemistry is influenced by different water sources
Drew Brown, Tom Kibblewhite, Fiona Whitaker, Daniela Gutierrez‐Rueda, Daniel S. Alessi, John‐Paul Zonneveld, Murray Gingras, Hilary Corlett   +7 more
wiley   +1 more source

Diagenetic controls on porosity evolution and pore type organisation in microporous carbonate rocks: Evidence for mesogenetic porosity formation

Sedimentology, EarlyView.
ABSTRACT Microporous carbonate rocks typically record complex diagenetic histories driven by microbial activity and fluid interactions within multiple diagenetic environments. The relative roles of meteoric and burial diagenetic processes in pore evolution remain debated, particularly within Cretaceous carbonate systems of the Middle East, as does the ...
Hugues Bitault, Cathy Hollis, Alain Tonetto, Pierre Deschamps, Philippe Léonide, François Fournier   +5 more
wiley   +1 more source

Porosity Preservation in Deeply Buried (8500 m) Jurassic Calcareous Mudstones of the Vienna Basin (Austria)

Terra Nova, EarlyView.
ABSTRACT Significant porosity of more than 5% was found at depths of more than 8500 m in poorly sorted, calcareous mudstones of the Malmian Mikulov Formation. These overpressured rocks are the main hydrocarbon source rock in the Vienna Basin. Core samples from present‐day depths of 8150 m to 8550 m were analysed using X‐ray diffraction and scanning ...
Susanne Gier, Jürgen Schieber, Andrea Forstner‐Schicker, Peter Krois   +3 more
wiley   +1 more source

Hydrodynamics, Diagenesis and Hypoxia Variably Drive Benthic Oxygen Flux in a River‐Reservoir System

Water Resources Research
Benthic oxygen flux with complex spatiotemporal variations is essential for the global budget of carbon dioxide and the regional security of water quality and ecology, but its dominant driver under different circumstances has yet to be identified.
Yuanning Zhang, Xueping Gao, Bowen Sun, Xiaobo Liu   +3 more
doaj   +1 more source

A study of the effects of early diagenesis on the geotechnical properties of carbonate sediments (North West Shelf, Australia)

Scientific Reports
Carbonate sediments are often regarded as problematic in geotechnical engineering due to the high variability of their properties. Understanding and quantifying this variability will become increasingly critical in the years ahead, notably with respect ...
Ulysse Lebrec, Shambhu Sharma, Phil Watson, Rosine Riera, Hackmet Joer, Ryan Beemer, Christophe Gaudin   +6 more
doaj   +1 more source

Bone Diagenesis and Extremes of Preservation in Forensic Science

Humans
Understanding the composition and diagenetic processes of the deposition environment is pivotal to understanding why bone undergoes preservation or diagenesis.
Rhys Williams, Tim Thompson, Caroline Orr, Gillian Taylor   +3 more
doaj   +1 more source

Impacts of diagenetic process on reservoir quality of the Middle Cretaceous Upper Sarvak Formation in one of oil fields in the Abadan Plain, SW Iran [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2016
During the precipitation of Sarvak formation imprints of climate, tectonic and sea level fluctuation lead to some of the most prolific reservoirs in Zagros and Persian Gulf basins.
Ali Assadi, Javad Honarmand, Ali Moallemi, Iraj Abdollahie Fard   +3 more
doaj  

Petrographic- mineralogical examination and diagenetic history of the Paleogene evaporites in Bulanık (Muş), Turkey

Bulletin of the Mineral Research and Exploration, 2020
Oligocene aged evaporite formations are observed in shallow sea-sabkha environments that develop in highly restricted conditions from sea in northeastern of the Muş basin.
Pelin Güngör Yeşi̇lova
doaj   +1 more source

Effect of Laboratory Reagents for Cleaning Modern Contamination on the δ15N Integrity of Nitrogen‐Poor Samples

Rapid Communications in Mass Spectrometry, Volume 40, Issue 19, 15 October 2026.
ABSTRACT Rationale Nitrogen isotope values have been widely used for tracing ancient biogeochemical processes, but contaminant‐sensitive materials, such as Precambrian sedimentary rocks, meteorites, or returned extraterrestrial samples, often have low nitrogen levels and are thus vulnerable to modern organic contamination.
Kunmanee Bubphamanee, Andrew Schauer, Roger Buick   +2 more
wiley   +1 more source

Multi‐proxy sequence stratigraphy of a mixed carbonate–siliciclastic shelf across the Jurassic–Cretaceous transition

The Depositional Record, Volume 12, Issue 4, September 2026.
An integrated facies, MS and XRF‐based approach applied to the Tithonian–Berriasian Sidi Khalif Formation (central Tunisia) resolves five Tithonian and eight Berriasian third‐order sequences, showing how mixed carbonate–siliciclastic shelves record coupled eustatic, climatic and tectonic controls and providing a transferable template for similar mud ...
Hamdi Omar, Adnene Lafi, Chokri Yaich
wiley   +1 more source