Results 21 to 30 of about 3,445 (238)

Applications status and prospects for using unmanned aerial vehicle in sedimentology

地质科技通报, 2023
The unmanned aerial vehicle (UAV) is an important tool for acquiring digital images of the surface and collecting samples. Recently, it has been becoming an emerging research tool in sedimentology, changing the paradigm of sedimentology.However, UAV ...
Xinyao Sun, Ping Wang, Hong Zhang, Yujie Guo, Fei Guo   +4 more
doaj   +1 more source

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

Sedimentary record from the Canada Basin, Arctic Ocean: implications for late to middle Pleistocene glacial history [PDF]

Climate of the Past, 2017
Sediment core ARC4-BN05 collected from the Canada Basin, Arctic Ocean, covers the late to middle Quaternary (Marine Isotope Stage – MIS – 1–15, ca. 0.5–0.6 Ma) as estimated by correlation to earlier proposed Arctic Ocean stratigraphies and AMS14C dating ...
L. Dong, Y. Liu, X. Shi, L. Polyak, Y. Huang, X. Fang, J. Liu, J. Zou, K. Wang, F. Sun, X. Wang   +10 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

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

Measurement and Modeling of High‐Frequency Acoustic Properties in Fine Sandy Sediments

Earth and Space Science, 2019
The object of this study was to obtain the acoustic properties of fine sandy sediments with approximately 22% clay content from the East China Sea Shelf.
G. Li, J. Wang, B. Liu, X. Meng, G. Kan, Y. Pei   +5 more
doaj   +1 more source

A calcite crisis unravelling Early Miocene (Ottnangian) stratigraphy in the North Alpine–Carpathian Foreland Basin: a litho- and chemostratigraphic marker for the Rzehakia Lake System

Geologica Carpathica, 2018
Within the Lower Austrian part of the North Alpine Foreland Basin (NAFB), up to 1000 m of sediments were deposited throughout the Ottnangian (Early Miocene, Burdigalian).
Palzer-Khomenko Markus, Wagreich Michael, Knierzinger Wolfgang, Meszar Maria, Gier Susanne, Kallanxhi Mădălina-Elena, Soliman Ali   +6 more
doaj   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source