Results 31 to 40 of about 66,733 (286)

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

Ostracode-based aminostratigraphy and aminochronology of a tufa system in central Spain [PDF]

, 2005
In the Priego area, central Spain, extensive tufa deposits are located in three small tributaries located at the head of the 1000 kmlong Tagus River. The deposits are originated after karst-origin running waters emerged from the confines of the canyons ...
Andrews, Andrews, Arenas, Baker, Blum, Blum, Brook, Buccino, Bull, Cadot, Chafetz, Durán, Emeis, Evans, Ford, Geurts, Golubić, Golubić, Goodfriend, Goodfriend, Hennig, Jacobson, Julià, Kaufman, Kaufman, Knox, Leslie, López Vera, López Vera, Madurga, McCoy, Murray-Wallace, Oviatt, Pedley, Pentecost, Pentecost, Pentecost, Riding, Shackleton, Sohn, Stumm, Symoens, Torres, Torres, Torres, Tzedakis, Virgili   +46 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

The anatomy of exhumed river-channel belts: Bedform to belt‐scale river kinematics of the Ruby Ranch Member, Cretaceous Cedar Mountain Formation, Utah, USA [PDF]

, 2020
Many published interpretations of ancient fluvial systems have relied on observations of extensive outcrops of thick successions. This paper, in contrast, demonstrates that a regional understanding of palaeoriver kinematics, depositional setting and ...
Cardenas, Benjamin T., Goudge, Timothy A., Hughes, Cory M., Levy, Joseph S., Mason, Jasmine, Mohrig, David, Swanson, Travis, Zhao, Feifei   +7 more
core  

Controls on Cyclic Formation of Quaternary Early Diagenetic Dolomite [PDF]

, 2018
The origin of sedimentary dolomite and the factors that control its formation within the geological record remain speculative. In most models, dolomite formation is linked to evaporative conditions, high water temperature, increasing Mg/Ca ratio ...
Bontognali, T. R. R., Immenhauser, A., Kwiecien, Ola, McCormack, J.   +3 more
core   +2 more sources

Hybrid coastal edges in the Neuquén Basin (Allen Formation, Upper Cretaceous, Argentina) [PDF]

, 2015
The Allen Formation records the first Ingression Atlantic to the Neuquén Basin during the Late Cretaceous. The definition of lithofacies and facies associations interpretation for stratigraphic sections in Paso Córdoba and Salitral Moreno area, Río ...
Armas, María Paula, Sanchez, Maria Lidia   +1 more
core   +1 more source

Stable oxygen and carbon isotope compositional fields for skeletal and diagenetic components in New Zealand Cenozoic nontropical carbonate sediments and limestones: a synthesis and review [PDF]

, 1996
The stable oxygen isotope composition (d¹⁸O) of a precipitated carbonate depends mainly on the isotope composition, salinity, and temperature of the host fluid, whereas the stable carbon isotope composition (d¹³C) reflects the source of CO2 for ...
Nelson, Campbell S., Smith, Abigail M.
core   +2 more sources

Coastal oceanography and sedimentology in New Zealand, 1967-91. [PDF]

, 1992
This paper reviews research that has taken place on physical oceanography and sedimentology on New Zealand's estuaries and the inner shelf since c. 1967.
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core   +2 more sources