Results 71 to 80 of about 10,620 (270)

Platinum Group Element Traces of CAMP Volcanism Associated With Low‐Latitude Environmental and Biological Disruptions

open access: yesGeophysical Monograph Series, Page 263-304., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside   +3 more
wiley  

+2 more sources

A talus rock glacier in Nantlle Valley, North Wales

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Landforms comprising mixtures of fine and coarse sediment and deposited during late glacial times are ubiquitous in the British mountains. In many cases, their interpretation has often proved contentious; as a result, the non‐generic term discrete debris accumulations (DDA) has been used to describe them and, over the last 50 years, some have ...
Stephan Harrison, Ed Anderson
wiley   +1 more source

(Table 5) Analyses of Plagioclase feldspars from ODP Leg 135 sites

open access: yes, 1994
(Table 5) Analyses of Plagioclase feldspars from ODP Leg 135 ...
Clift, Peter D   +3 more
core   +1 more source

Managing and visualising geochemical data for tephra correlation with the IntChron Integration Tool

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT There is now a wealth of glass‐shard geochemical data for volcanic ash (tephra) layers from a wide range of volcanoes and eruptions, providing invaluable datasets for tephrochronology. However, compilation of published data to assess tephra correlations leads to large files and requires careful management.
Victoria C. Smith   +5 more
wiley   +1 more source

Geochemistry of granitic rocks and their feldspars and micas from Segura, Central Portugal [PDF]

open access: yes, 2002
Só está disponível o resumo desta comunicação.Geochemistry of granitic rocks and their feldspars and micas from Segura, Central ...
Silva, M.M.V.G., Antunes, I.M.H.R.
core   +1 more source

(Table 2) Pb isotope composition of K-feldspars from sediments of the Bengal Fan

open access: yes, 2001
(Table 2) Pb isotope composition of K-feldspars from sediments of the Bengal ...
Amjad, Shahid   +15 more
core   +1 more source

Neon diffusion kinetics and implications for cosmogenic neon paleothermometry in feldspars [PDF]

open access: yes, 2017
Observations of cosmogenic neon concentrations in feldspars can potentially be used to constrain the surface exposure duration or surface temperature history of geologic samples.
Balco, Greg   +7 more
core   +1 more source

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry   +3 more
wiley   +1 more source

Studying the Solubility, Availability, and Uptake of Silicon (Si) from Some Ore Minerals in Sandy Soil

open access: yesSains Tanah: Journal of Soil Science and Agroclimatology, 2018
The solubility and availability of Si from the feldspar, silica, and zeolite as Si-bearing minerals were studied in a sandy soil. Silicon uptake by the soybean (Glycine max L.) plant was discussed.
Rama T. Rashad, Rashad A. Hussien
doaj   +1 more source

Computer Printout "Feldspars Cranfills Gap"

open access: yes, 1984
Computer printout labeled "Feldspars Cranfills Gap" with calculations of the feldspars in the ...

core  

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