Results 71 to 80 of about 18,595 (261)
Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald +17 more
wiley +1 more source
The Constructions and Pyrolysis of 3D Kerogen Macromolecular Models: Experiments and Simulations
Global Challenges, 2019 Kerogens are extracted from deep shales to study pyrolysis of deep shale samples. The 2D molecular models of kerogens are obtained by a series of physical and chemical experiments by which the macromolecular models of kerogens are constructed.
XiaoHe Wang +3 more
doaj +1 more source
Journal of Environmental Quality, Volume 55, Issue 1, January/February 2026.Abstract Triazole fungicides are widely detected in agricultural soils, yet their long‐term persistence remains poorly understood. We evaluated how sorption, bioaccessibility, and degradation change with aging under field conditions. Topsoil was collected over 2 years from four Danish fields with detailed spray records. Tebuconazole, propiconazole, and
Anders R. Johnsen +3 more
wiley +1 more source
Organic geochemical analysis of shaly facies from two wells within Anambra Basin, Southeastern Nigeria [PDF]
, 2018 Organic geochemical analysis of two selected wells penetrating shale facies of the Anambra basin was conducted with the view of evaluating the section in terms of quantity and quality of organic matter, genetic potential, organic matter type, thermal ...
Adeagbo, Olusola Ayoade +3 more
core
Paleoceanography and Paleoclimatology, Volume 41, Issue 1, January 2026.Abstract Eccentricity cycles in deep‐sea paleoclimate records suggest that astronomical forcing notably altered global temperatures and carbon cycle dynamics. Because changes in the distribution of insolation alone cannot explain the observed climate variability, climate‐carbon cycle feedbacks must have amplified the response.
P. Vervoort +4 more
wiley +1 more source
Organic chemical signatures of New Zealand carbonate concretions and calcite fracture fills as potential fluid migration indicators [PDF]
, 2006 Macroscopic calcite crystals are common in sedimenta¬ry strata, occurring both as tectonic veins and also filling one or more generations of septarian rupture or later brittle fractures in calcareous concretions.
Nelson, Campbell S., Pearson, Michael J.
core +1 more source
The contribution of CHONS particles to the diffuse high Galactic latitude IR emission
, 2014 This work purports to model the far infrared gray-body emission in the spectra of high-Galactic-latitude clouds. Several carbonaceous laboratory materials are tested for their fitness as carriers of this modified-black-body emission which, according to ...
Papoular, Renaud
core +1 more source
Basin Research, Volume 38, Issue 1, January–February 2026.Seismic data reveals Cretaceous stratigraphy and hydrocarbon potential beneath volcanic rocks in Offshore Indus Basin, where magmatic intrusions enhanced source rock maturation and hydrocarbon generation by 8%–18% during favourable timing coinciding with Deccan volcanism.
Yasir Shahzad +3 more
wiley +1 more source
Molecular study of lipids in humic acids by sequential chemical degradation [PDF]
, 2009 Lipidy v půdě vykazují poměrně vysokou resistenci k biodegradaci, mohou proto tak zajistit informace o zdrojích organické hmoty a diagenetických procesech. Půdní organická hmota je vysoce heterogenní a vyskytují se v ní různé dynamické systémy.
Bachratá, Radka
core
Formation of magnetic minerals at hydrocarbon-generation conditions [PDF]
, 2015 In this paper, we report the pyrolysis and formation of magnetic minerals in three source rock samples from the Wessex Basin in Dorset, southern England.
Abubakar, R. +6 more
core +2 more sources