[HTML][HTML] Low-δ18O silicic magmas on Earth: A review
Silicic magmas play an important role in the formation of continental crust and are
responsible for some of the most hazardous volcanic eruptions on the planet. Low-δ 18 O …
responsible for some of the most hazardous volcanic eruptions on the planet. Low-δ 18 O …
The evolving nature of terrestrial crust from the Hadean, through the Archaean, into the Proterozoic
BS Kamber - Precambrian Research, 2015 - Elsevier
An outstanding feature of the Archaean Eon is that it was a time of major production and
preservation of continental lithosphere. Here I review the geological, geochemical and basic …
preservation of continental lithosphere. Here I review the geological, geochemical and basic …
New magmatic oxybarometer using trace elements in zircon
RR Loucks, ML Fiorentini, GJ Henríquez - Journal of Petrology, 2020 - academic.oup.com
We derive a novel method for determining the oxidation state of a magma as zircon
crystallized, with a standard error of±0· 6 log unit ƒO2, using ratios of Ce, U, and Ti in zircon …
crystallized, with a standard error of±0· 6 log unit ƒO2, using ratios of Ce, U, and Ti in zircon …
Why Archaean TTG cannot be generated by MORB melting in subduction zones
Until recently it was assumed that the Archaean continental crust (made of TTGs: tonalites,
trondhjemites, and granodiorites) was generated through partial melting of MORB-like …
trondhjemites, and granodiorites) was generated through partial melting of MORB-like …
Continental crust beneath southeast Iceland
TH Torsvik, HEF Amundsen… - Proceedings of the …, 2015 - National Acad Sciences
The magmatic activity (0–16 Ma) in Iceland is linked to a deep mantle plume that has been
active for the past 62 My. Icelandic and northeast Atlantic basalts contain variable …
active for the past 62 My. Icelandic and northeast Atlantic basalts contain variable …
Depth of magma storage under Iceland controlled by magma fluxes
The compositions of volcanic materials are sensitive to physical conditions in the underlying
magmatic system. When basaltic melts are saturated in olivine‐plagioclase‐augite prior to …
magmatic system. When basaltic melts are saturated in olivine‐plagioclase‐augite prior to …
Rhyolites—Hard to produce, but easy to recycle and sequester: Integrating microgeochemical observations and numerical models
IN Bindeman, AG Simakin - Geosphere, 2014 - pubs.geoscienceworld.org
Recent discoveries of isotopically diverse minerals, ie, zircons, quartz, and feldspars, in
large-volume ignimbrites and smaller lavas from the Snake River Plain (SRP; Idaho, USA) …
large-volume ignimbrites and smaller lavas from the Snake River Plain (SRP; Idaho, USA) …
Silicic magma petrogenesis in Iceland by remelting of hydrothermally altered crust based on oxygen isotope diversity and disequilibria between zircon and magma …
Terra Nova, 24, 227–232, 2012 Abstract Petrogenesis of silicic magmas in Iceland has
fundamental significance for understanding the relative importance of fractional …
fundamental significance for understanding the relative importance of fractional …
Structural control on magmatism along divergent and convergent plate boundaries: Overview, model, problems
V Acocella - Earth-Science Reviews, 2014 - Elsevier
Plate boundaries are the most active, unstable and hazardous areas on Earth. The aim of
this study is twofold. 1) Provide an overview of the main structural features along divergent …
this study is twofold. 1) Provide an overview of the main structural features along divergent …
An impact melt origin for Earth's oldest known evolved rocks
Earth's oldest evolved (felsic) rocks, the 4.02-billion-year-old Idiwhaa gneisses of the Acasta
Gneiss Complex, northwest Canada, have compositions that are distinct from the felsic rocks …
Gneiss Complex, northwest Canada, have compositions that are distinct from the felsic rocks …