Results 81 to 90 of about 149,067 (320)

STLIP basalts

open access: yes, 2023
Supplementary information for ...
openaire   +1 more source

A New Approach for Calculating Texture Coefficients of Different Rocks With Image Segmentation and Image Processing Techniques

open access: yesMicroscopy Research and Technique, EarlyView.
This study calculated the texture coefficient (TC) values of 20 different rock textures with magmatic, metamorphic, and sedimentary origins, which underwent image segmentation using a novel approach. ABSTRACT The texture coefficient (TC) is a critical parameter used to analyze the microstructural characteristics of rocks and predict their mechanical ...
Emre Karakaya   +3 more
wiley   +1 more source

Self-Centering Precast Unit as Energy Dissipation Members in Precast Segmental Bridge Columns

open access: yesBuildings
This research aims to present a new generation of seismic-resisting systems designed for precast reinforced concrete (RC) bridge piers in modern sustainable cities to withstand moderate to high seismic activity.
Amr M. A. Moussa   +4 more
doaj   +1 more source

Large igneous provinces and mass extinctions: an update [PDF]

open access: yes, 2014
The temporal link between mass extinctions and large igneous provinces is well known. Here, we examine this link by focusing on the potential climatic effects of large igneous province eruptions during several extinction crises that show the best ...
Bond, David P. G., Wignall, Paul B.
core   +1 more source

Combining Density Fractionation and Ca K‐Edge XANES Reveals Contrasting SOM–Mineral Association Patterns Shaped by Parent Material in Forest Soil O Horizons

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Soil organic matter (SOM) accumulation in forest soils is strongly influenced by interactions with inorganic constituents derived from parent material mineralogy. However, their role in the forest floor remains underexplored.
Gabriela Villalba‐Ayala   +3 more
wiley   +1 more source

Challenges in dating blanket peat and implications for understanding its initiation in Ireland

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Blanket peat is widespread in maritime extra‐tropical environments. Prehistoric land‐use activity was traditionally invoked as the stimulus of blanket peat initiation in the British Isles, but recently, climate has been viewed as the driver of peat formation.
Helen Essell   +2 more
wiley   +1 more source

Lunar basalt chronology, mantle differentiation and implications for determining the age of the Moon [PDF]

open access: yes, 2016
Despite more than 40 years of studying Apollo samples, the age and early evolution of the Moon remain contentious. Following the formation of the Moon in the aftermath of a giant impact, the resulting Lunar Magma Ocean (LMO) is predicted to have ...
Anand, Mahesh   +8 more
core   +4 more sources

Application of 3D Raman Mapping on Complex Inclusions: A Case Study of the Styrian Basin Mantle Xenoliths (W‐Carpathian Pannonian Region)

open access: yesJournal of Raman Spectroscopy, EarlyView.
Recent advancements in spectral and spatial resolutions for Raman spectroscopy allow the analysis of fluid and melt inclusions. To explore the applicability of 3D Raman mapping, we conducted 3D Raman mapping on inclusions hosted by orthopyroxene in modally metasomatized mantle xenoliths from the Styrian Basin (W‐Carpathian Pannonian Region).
Justine L. Myovela   +7 more
wiley   +1 more source

Seasonal and spatial transitions in phytoplankton assemblages spanning estuarine to open ocean waters of the tropical Pacific

open access: yesLimnology and Oceanography, EarlyView.
Abstract Islands in the tropical Pacific supply elevated nutrients to nearshore waters that enhance phytoplankton biomass and create hotspots of productivity in otherwise nutrient‐poor oceans. Despite the importance of these hotspots in supporting nearshore food webs, the spatial and temporal variability of phytoplankton enhancement and changes in the ...
Sarah J. Tucker   +6 more
wiley   +1 more source

The life-history of basalt ground stone tools from early urban domestic contexts: A chronicle from the EBA III of Tell es-Safi/Gath, Israel

open access: yesJournal of Lithic Studies, 2016
Recent archaeological excavations at the early urban settlement of Tell es-Safi/Gath, Israel present the opportunity to reconstruct the life-history of basalt ground stone artefacts of an early urban domestic neighbourhood.
Jeremy A. Beller   +3 more
doaj   +1 more source

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