Results 31 to 40 of about 66,997 (277)

Controls of depositional facies and diagenetic alterations on reservoir quality of the Fahliyan Formation in the Central Zagros area [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2020
The Fahliyan Formation is a member of the Khami Group with Neocomian–Barremian age. In two surface sections in the Izeh Zone and two wells of the southern Dezful Embayment, it includes 12 microfacies deposited on four facies belts as tidal flat, inner ...
Hamzeh Mehrabi, Hossein Noori, Javad Sobhani   +2 more
doaj   +1 more source

Coptocampylodon? rhaeticus n.sp., a New Problematic Microfossil (“incertae sedis”) from the Rhaetian Dachstein Limestone of the Northern Calcareous Alps (Germany, Austria)

Geologia Croatica, 2002
A new problematic microfossil is described as Coptocampylodon?rhaeticus n.sp. from the Rhaetian Dachstein Limestone of the NorthernCalcareous Alps. The new species is composed of a long cylindricaland an irregular rounded body, both showing narrow axial ...
Felix Schlagintweit, Sigrid Missoni, Hans Jürgen Gawlick   +2 more
doaj   +1 more source

The upper percolation threshold and porosity–permeability relationship in sandstone reservoirs using digital image analysis

Scientific Reports, 2022
Subsurface sandstone deposits represent globally ubiquitous reservoirs which can potentially provide the characteristics necessary for the effective geological storage of CO2.
Ryan L. Payton, Domenico Chiarella, Andrew Kingdon   +2 more
doaj   +1 more source

Sedimentological characterization of Antarctic moraines using UAVs and Structure-from-Motion photogrammetry [PDF]

, 2015
In glacial environments particle-size analysis of moraines provides insights into clast origin, transport history, depositional mechanism and processes of reworking.
Matthew J. Westoby, Stuart A. Dunning, John Woodward, Andrew S. Hein, Shasta M. Marrero, Kate Winter, David E. Sugden, Hodge, Dugdale, Friedman, Furukawa, Detert, Detert, Agisoft, McLaren, Pitkänen, Adams, Fuller, Fehr, Kääb   +19 more
core   +2 more sources

The influence of grain shape and size on the relationship between porosity and permeability in sandstone: a digital approach

Scientific Reports, 2022
An accurate and reliable description of the porosity–permeability relationship in geological materials is valuable in understanding subsurface fluid movement.
Ryan L. Payton, Domenico Chiarella, Andrew Kingdon   +2 more
doaj   +1 more source

Application of Positive Matrix Factorization for Source Apportionment of Polycyclic Aromatic Hydrocarbons (PAH) in the Adriatic Sea, and the Evaluation of PAH-Related Carcinogenic Risks

Applied Sciences, 2023
Concentrations of polycyclic aromatic hydrocarbons (PAH) were studied in 36 sediment samples collected from 29 sites in the central Adriatic Sea. The total concentration of PAH showed high variability, ranging from 42.85 µg kg−1 in open sea sediments to ...
Jelena Mandić, Jere Veža, Grozdan Kušpilić   +2 more
doaj   +1 more source

Orbital frequencies in the carbonate sedimentary record: distorted by diagenesis? [PDF]

, 2004
The most important archive of Earth’s climate change through geologic history is the sedimentary rock record. Rhythmic sedimentary alternations are usually interpreted as a consequence of periodic variations in the orbital parameters of the Earth.
Bornholdt, Stefan, Böhm, Florian, Westphal, Karl-Heinz   +2 more
core   +1 more source

Environmental and climatic proxies for the Cañadón Asfalto and Neuquén basins (Patagonia, Argentina): review of middle to upper jurassic continental and near coastal sequences [PDF]

, 2015
In this review, we include several proxies (sedimentology, palynology, invertebrates) from the Cañadón Asfalto and Neuquén basins, to infer the environments and regional climatic context during the Middle to Late Jurassic of Patagonia.
Cabaleri, Nora Graciela, Melendi, Daniel Luis, Narvaez, Paula Liliana, Quattrocchio, Mirta Elena, Rosenfeld, U., Scafati, Laura Haydee, Volkheimer, Wolfang   +6 more
core   +1 more source

Sedimentología y vertebrados fósiles de la Formación Santa Cruz (Mioceno temprano) en Lago Posadas, suroeste de Patagonia, Argentina [PDF]

, 2019
Lago Posadas se ubica al pie de los Andes Patagónicos Australes, en el suroeste de Argentina, donde la Formación Santa Cruz (FSC) del Mioceno temprano muestra afloramientos potentes y lateralmente continuos.
Aramendía, Inés, Bargo, María Susana, Cuitiño, José Ignacio, Vizcaíno, Sergio Fabián   +3 more
core   +2 more sources

Lake sedimentological and ecological response to hyperthermals : Boltysh impact crater, Ukraine [PDF]

, 2017
Acknowledgements Initial drilling of the Boltysh meteorite crater was funded by Natural Environment Research Council (NERC) grant NE/D005043/1. The authors are extremely grateful to the valuable scientific contributions of S. Kelley and I. Gilmour.
Andrews, Steven D., Ebinghaus, Alena, Jolley, David W., Kemp, David B.   +3 more
core   +1 more source