Results 101 to 110 of about 25,161 (234)
Terra Nova, Volume 38, Issue 5, Page 306-313, October 2026.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 +3 more
wiley +1 more source
Cryptic meteoric diagenesis in freshwater bivalves: Implications for radiocarbon dating
, 2007 Shells of freshwater bivalves are commonly used for radiocarbon dating late Pleistocene archaeological and vertebrate fossil sites, thus providing important constraints on late Pleistocene human dispersal and megafauna extinction hypotheses.
Deer, Linda +8 more
core +1 more source
A Shallow‐Marine Ecosystem Before Initial Tibetan Plateau Uplift
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract The uplift of the Tibetan Plateau profoundly influences global atmospheric circulation, sediment transport, and biodiversity, but its pre‐uplift marine paleoenvironment remains poorly understood. Here we report the first discovery of an in situ benthic fossil assemblage from the Puga area in central Tibet, which was deposited on a shallow ...
Ming Wang +12 more
wiley +1 more source
The Depositional RecordVolcanogenic detritus in sandstones not only conveys important provenance information but also significantly impacts diagenetic processes. This study specifically focuses on such understudied effects by carrying out grain size, petrographic, fluid ...
Yuanlan Tang +11 more
doaj +1 more source
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
Modeling particulate organic matter diagenesis with SED2K
, 2011 Diagenesis of particulate organic matter in lake sediments consumes and produces chemical species that have significant effects on water quality, e.g. oxygen and nitrate depletion and attendant mediation of nutrient and metal recycling.
Gawde, Rasika Kishor
core +1 more source
How life affects mineral formation: A reappraisal of concepts and terminology
The Depositional Record, Volume 12, Issue 4, September 2026.We present a moderately revised terminology of concepts how life may influence mineral formation. This framework would be more consistent and universally applicable. Abstract Numerous biological factors have been proposed to influence the formation of minerals under Earth‐surface conditions, but the underlying concepts are often confused due to ...
Patrick Hadrian Meister, Nereo Preto
wiley +1 more source
Sea level changes versus hydrothermal diagenesis: Origin of Triassic carbonate platform cycles in the Dolomites, Italy: Discussion [PDF]
In his recent paper, Blendinger (2004) presents a new and unconventional hypothesis for the formation of the Triassic Latemàr carbonate cycles. He assigned the cycles to intermittent hydrothermal influence alternating with normal marine deposition ...
Peterhansel, A., Egenhoff, S. O.
core +1 more source
The Depositional Record, Volume 12, Issue 4, September 2026.This study compares primary dolomite precipitation in modern and ancient environments, varying from coastal to transitional to continental saline environments. The microbially mediated dolomites are characterised by high Sr concentrations. Here, various geochemical proxies are studied and compared to previous findings.
Carlette N. Blok +4 more
wiley +1 more source
The Depositional Record, Volume 12, Issue 4, September 2026.This study investigates the sedimentology and geochemistry of recent sediments from ephemeral river systems on Hurd Peninsula, Livingston Island, Antarctica. These systems are important for understanding sedimentary and geochemical processes in unique polar environments.
Yakup Çelik +2 more
wiley +1 more source