Results 1 to 10 of about 308,248 (332)

Late Pleistocene to Middle Holocene record of sedimentation and carbonate content in the Zervynos paleolake-dune complex, Lithuania [PDF]

Estonian Journal of Earth Sciences, 2022
The Late Pleistocene to the Holocene is a time interval that covers the climate transition from a cold to a warm interglacial regime. In the Baltic region, many studies have focused on estimating environmental responses to climatic forcing using ...
Liudas Daumantas, Petras Šinkūnas, Eugenija Rudnickaitė, Nikita Dobrotin, Dalia Kisielienė, Andrej Spiridonov   +5 more
doaj   +3 more sources

Measurements and Modelling of Vapour–Liquid Equilibrium for (H₂O + N₂) and (CO₂ + H₂O + N₂) Systems at Temperatures between 323 and 473 K and Pressures up to 20 MPa

Energies, 2022
Understanding the phase behaviour of (CO2 + water + permanent gas) systems is critical for implementing carbon capture and storage (CCS) processes, a key technology in reducing CO2 emissions.
Yolanda Sanchez-Vicente, J. P. Martin Trusler   +1 more
doaj   +1 more source

Carbon nanofibers based carbon–carbon composite fibers

Discover Nano, 2023
AbstractTextile grade polyacrylonitrile (PAN) was used as a precursor material for carbon fiber preparation. E-beam irradiated polyacrylonitrile grafted carbon nanofibers were dispersed in polyacrylonitrile solution (dissolved in dimethyl formamide).
Nitilaksha Hiremath, Sunay Bhat, Ramiz Boy, Maria Cecilia Evora, Amit K. Naskar, Jimmy Mays, Gajanan Bhat   +6 more
openaire   +3 more sources

Optical and Spectroscopic Properties of Lorenzenite, Loparite, Perovskite, Titanite, Apatite, Carbonates from the Khibiny, Lovozero, Kovdor, and Afrikanda Alkaline Intrusion of Kola Peninsula (NE Fennoscandia)

Crystals, 2022
This manuscript deals with the analysis of significant rare earth elements (REE) minerals such as eudialyte, lorenzenite, loparite, perovskite, titanite, apatite, and carbonates.
Miłosz Huber, Daniel Kamiński, Grzegorz Czernel, Evgeni Kozlov   +3 more
doaj   +1 more source

A New Look at Physico-Chemical Causes of Changing Climate: Is the Seasonal Variation in Seawater Temperature a Significant Factor in Establishing the Partial Pressure of Carbon Dioxide in the Earth’s Atmosphere?

Thermo, 2022
Seasonal oscillations in the partial pressure of carbon dioxide (pCO2) in the Earth’s atmosphere, stronger in northern latitudes, are assumed to show that terrestrial photosynthesis exceeds respiration in summer, reducing the pCO2 in air but increasing ...
Ivan R. Kennedy, John W. Runcie, Shuo Zhang, Raymond J. Ritchie   +3 more
doaj   +1 more source

Prestack Seismic Velocity Ratio Evaluation of a Mixed Siliciclastic–Carbonate Formation: Case Study from the Strawn Group on the Eastern Shelf Texas

Energies, 2023
Although a mixed carbonate–siliciclastic system of the Strawn Group on the Eastern Shelf in King County, Texas, USA provides excellent hydrocarbon reservoirs, facies variability and reservoir properties within such systems are not well understood.
Osareni C. Ogiesoba, Shuvajit Bhattacharya, Sarp Karakaya, Trey Cortez   +3 more
doaj   +1 more source

Hydrothermal Calcite Precipitation in Veins: Inspired by Experiments for Oxygen Isotope Fractionation between CO₂ and Calcite from 1 °C to 150 °C

Applied Sciences, 2023
The oxygen isotope ratios of minerals are important for estimating the formation temperature of hydrothermal deposits. Calcite is generally found in most mining districts.
Yuichi Morishita
doaj   +1 more source

Identification and Current Palaeobiological Understanding of “Keratosa”-Type Nonspicular Demosponge Fossils in Carbonates: With a New Example from the Lowermost Triassic, Armenia

Life, 2022
Structures similar to fossilized nonspicular demosponges have been reported in carbonates throughout the Phanerozoic and recently in rocks dating back to 890 Ma ago.
Cui Luo, Yu Pei, Sylvain Richoz, Qijian Li, Joachim Reitner   +4 more
doaj   +1 more source

A guide for microscopic description of fossil stromatolites [PDF]

Brazilian Journal of Geology, 2023
Stromatolites are laminated biosedimentary structures of great importance for paleobiological, paleoecological, and paleoenvironmental analyses, mainly in Precambrian rocks. Their value is related to the glimpse of past life recorded in their lamination,
Evelyn Aparecida Mecenero Sanchez, Guilherme Raffaeli Romero, Flavia Callefo, Alexandre Ribeiro Cardoso, Thomas Rich Fairchild   +4 more
doaj   +1 more source

THE GEOLOGICAL SIGNIFICANCE OF MAJSTORSKA CESTA – A HISTORICAL ROAD ON VELEBIT MT. WITH A SPECIAL REVIEW OF JURASSIC CARBONATE ROCKS

Rudarsko-geološko-naftni Zbornik, 2020
Majstorska Cesta is a historical road along Velebit Mt., NW of Sveti Rok, preserved in its original state since opening in 1832 and therefore added to the cultural heritage list of the Republic of Croatia in 2007.
Ivo Velić, Josipa Velić
doaj   +1 more source