Results 81 to 90 of about 5,220 (278)

Structural characterization of the metamorphic basement from North Dobrogean Promontory (Romania) using geophysical well logging

open access: yesE3S Web of Conferences, 2018
Metamorphic processes, leading to mineralogical and structural changes of the rocks in response to physical (pressure, temperature) and chemical conditions, can be associated with the development of sinmetamorphic or post-metamorphic fractures.
Ciupercă Constantin-Laurian   +2 more
doaj   +1 more source

Metamorphic Rocks, Ireland [PDF]

open access: yesNature, 1880
THERE appears to be confusion as to the times when metamorphic action occurred among the Irish rocks; my experience would point to the following:—
openaire   +1 more source

‘I like to dance with the flowers!’: Exploring the possibilities for biodiverse futures in an urban forest school

open access: yesChildren &Society, EarlyView.
Abstract This article explores the ways in which ‘forest school’, an educational approach where children engage in creative and play based activities in a ‘natural’ environment, can contribute towards Sustainable Development Goal 15 (SDG 15) by promoting sustainable use of terrestrial ecosystems and by helping address biodiversity loss. Drawing on data
Hannah Hogarth
wiley   +1 more source

High‐Pressure Na‐Ca Carbonates in the Deep Carbon Cycle

open access: yesGeophysical Monograph Series, Page 127-136., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey Rashchenko   +2 more
wiley  

+9 more sources

Long‐Term Trends in Juvenile Blue Crab Recruitment Patterns in a Wind‐Driven Estuary

open access: yesFisheries Oceanography, EarlyView.
ABSTRACT Conserving exploited marine species requires understanding population dynamics across life stages and habitats. This study analyzes juvenile blue crab (Callinectes sapidus) recruitment trends in North Carolina's Albemarle‐Pamlico Estuarine System.
Erin Voigt   +2 more
wiley   +1 more source

Six Ca‐Mg‐Fe Carbonate Reference Materials for In Situ Measurement of Oxygen and Carbon Isotope Ratios

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Six new Ca‐Mg‐Fe carbonate reference materials are available to the global geochemical community for calibrating oxygen and carbon isotope ratios by SIMS. Significant compositional matrix effects were observed in the dolomite‐ankerite and magnesite‐siderite series during SIMS analysis. Compositional matrix effects correlate with Fe variation.
Maria Rosa Scicchitano   +10 more
wiley   +1 more source

Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro   +7 more
wiley   +1 more source

New Magnetite Reference Material for SIMS δ18O Measurements and a Study of Precision and Accuracy Due to Crystal Orientation Effects

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points A new magnetite reference material (PF21mt) is available for δ18O measurements by SIMS. Reproducibility of measurement results in two laboratories suggest orientation bias of ±2‰ (2s) at 20 keV. Repeatability improves to ±1‰ (2s) when using a 13 keV protocol, suggesting reduced orientation bias. In situ isotope ratio measurements provide the
Michelle Ulrich   +4 more
wiley   +1 more source

Experiments on image data augmentation techniques for geological rock type classification with convolutional neural networks

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
The integration of image analysis through deep learning (DL) into rock classification represents a significant leap forward in geological research.
Afshin Tatar   +2 more
doaj   +1 more source

Wild bee diversity and land use: A case study in a mountain agroecosystem of the Serranía de Ronda, southern Spain

open access: yesInsect Conservation and Diversity, EarlyView.
Orchards supported the highest wild bee diversity and functional diversity, highlighting their role in maintaining bee communities in Mediterranean agroecosystems. Landscape heterogeneity positively influenced functional evenness and dispersion of wild bee communities, underscoring the importance of diverse landscapes for bee conservation. The presence
Violeta Hevia   +3 more
wiley   +1 more source

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