Mantle sources of ocean islands basalts revealed from noble gas isotope systematics
Noble gas isotope systematics, particular those of He, have been fundamental in showing
that some ocean island basalts (OIB) were sourced from deep mantle plumes. Relationships …
that some ocean island basalts (OIB) were sourced from deep mantle plumes. Relationships …
Metamorphosis of flora and vegetation during ontogeny of the Juan Fernández (Robinson Crusoe) Islands
TF Stuessy, DJ Crawford, J Greimler… - Botanical Journal of …, 2022 - academic.oup.com
Colonization, levels of speciation and vegetational metamorphosis during ontogeny of
oceanic islands over geological time are central evolutionary and biogeographic concerns …
oceanic islands over geological time are central evolutionary and biogeographic concerns …
Noble gas isotope systematics in the Canary Islands and implications for refractory mantle components
JMD Day - Geochimica et Cosmochimica Acta, 2022 - Elsevier
Noble gas isotope systematics of ocean island basalts (OIB) provide evidence for relatively
undegassed and primitive mantle sources. These OIB sources partly derive from the deep …
undegassed and primitive mantle sources. These OIB sources partly derive from the deep …
Sulfide mantle source heterogeneity recorded in basaltic lavas from the Azores
New highly siderophile element (HSE: Os, Ir, Ru, Pt, Pd, Re) abundance and Os isotopic
compositions, along with major-and trace-element abundance and Sr-Nd-Hf-Pb isotope data …
compositions, along with major-and trace-element abundance and Sr-Nd-Hf-Pb isotope data …
Tungsten in the mantle constrained by continental lithospheric peridotites: Less incompatible and more abundant
Isotope dilution W whole-rock data, coupled with data for other trace elements in 42
peridotite xenoliths from Tariat (Mongolia), Yangyuan and Hannuoba (China), and …
peridotite xenoliths from Tariat (Mongolia), Yangyuan and Hannuoba (China), and …
Intrasample osmium isotope disequilibrium in young volcanic rocks: Insights from a new progressive digestion procedure
S Bharadwaj, M Sharma - Geochimica et Cosmochimica Acta, 2024 - Elsevier
Some young volcanic rocks have been found to possess intrasample Os-isotope
heterogeneity. This has important implications for source tracing and dating. Here, we use a …
heterogeneity. This has important implications for source tracing and dating. Here, we use a …
[HTML][HTML] Trace element abundances in mineral phases and the groundmass of ocean island basalts
Incompatible trace elements are important tracers in igneous petrogenesis for determining
processes acting:(i) prior to partial melting on magma sources;(ii) during partial melting …
processes acting:(i) prior to partial melting on magma sources;(ii) during partial melting …
[HTML][HTML] Decoupling of short-lived radiogenic and helium isotopes in the Marquesas hotspot
The short-lived radiogenic 182 Hf/182 W (t½= 9 Ma) and 146 Sm/142 Nd (t½= 103 Ma)
systems are useful tools to investigate differentiation processes in Earth's early history …
systems are useful tools to investigate differentiation processes in Earth's early history …
The strong competition between growth and erosive processes on the Juan Fernández Archipelago (SE Pacific, Chile)
Abstract Ocean Island Volcanoes experience growth and dismantling throughout their entire
geological history. When these volcanoes are in their post-shield or post-rejuvenated stage …
geological history. When these volcanoes are in their post-shield or post-rejuvenated stage …
Tracing the Origin and Magmatic Evolution of the Rejuvenated Volcanism in Santa Clara Island, Juan Fernández Ridge, SE Pacific
Oceanic intraplate volcanoes sometimes experience late-stage eruptive activity known as
rejuvenated volcanism, and contrasting interpretations for its petrogenesis depend on the …
rejuvenated volcanism, and contrasting interpretations for its petrogenesis depend on the …