Generation of continental intraplate alkali basalts and implications for deep carbon cycle

R Xu, Y Liu, XC Wang, SF Foley, Y Zhang… - Earth-Science Reviews, 2020 - Elsevier
Although the deep recycling of carbon has been proposed to play a key role in producing
intraplate magmatism, the question of how it controls or triggers mantle melting remains …

Magmatism in the North Atlantic Igneous Province; mantle temperatures, rifting and geodynamics

MJ Hole, JH Natland - Earth-Science Reviews, 2020 - Elsevier
We have re-evaluated mantle potential temperature estimates for the North Atlantic Igneous
Province (NAIP). Temperature estimates involving olivine addition to pillow-lava glasses are …

Persistence of strong silica-enriched domains in the Earth's lower mantle

MD Ballmer, C Houser, JW Hernlund… - Nature …, 2017 - nature.com
The composition of the lower mantle—comprising 56% of Earth's volume—remains poorly
constrained. Among the major elements, Mg/Si ratios ranging from∼ 0.9–1.1, such as in …

Evidence for a deep mantle source for EM and HIMU domains from integrated geochemical and geophysical constraints

MG Jackson, TW Becker, JG Konter - Earth and Planetary Science Letters, 2018 - Elsevier
Subduction of oceanic and continental crust (and associated sediments) into the mantle over
geologic time generates mantle domains with geochemically distinct signatures, referred to …

Compositional layering within the large low shear‐wave velocity provinces in the lower mantle

MD Ballmer, L Schumacher, V Lekic… - Geochemistry …, 2016 - Wiley Online Library
The large low shear‐wave velocity provinces (LLSVP) are thermochemical anomalies in the
deep Earth's mantle, thousands of km wide and∼ 1800 km high. This study explores the …

Sulfur concentration of martian basalts at sulfide saturation at high pressures and temperatures–implications for deep sulfur cycle on Mars

S Ding, R Dasgupta, K Tsuno - Geochimica et Cosmochimica Acta, 2014 - Elsevier
To constrain sulfur concentration at sulfide saturation (SCSS) of martian magmas at mantle
conditions, we simulated basalt-sulfide melt equilibria using two synthesized meteorite …

Mantle sources of ocean islands basalts revealed from noble gas isotope systematics

JMD Day, TD Jones, RW Nicklas - Chemical Geology, 2022 - Elsevier
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 …

The mantle source of thermal plumes: Trace and minor elements in olivine and major oxides of primitive liquids (and why the olivine compositions don't matter)

K Putirka, Y Tao, KR Hari, MR Perfit… - American …, 2018 - pubs.geoscienceworld.org
We estimate the mantle source compositions for mantle plumes and, by implication, Earth's
lower mantle by:(1) measuring trace (eg, Sc, V, Cu) and minor (eg, Ca, Mn, Ni) element …

Geochemistry of lavas from the Caroline hotspot, Micronesia: Evidence for primitive and recycled components in the mantle sources of lavas with moderately elevated …

MG Jackson, AA Price, J Blichert-Toft, MD Kurz… - Chemical …, 2017 - Elsevier
A suite of lavas from Kosrae, Ponape and Chuuk islands, which are related to the Caroline
hotspot, are characterized for Sr, Nd, Pb, Hf and He isotopic compositions and major and …

Sulfur inventory of ocean island basalt source regions constrained by modeling the fate of sulfide during decompression melting of a heterogeneous mantle

S Ding, R Dasgupta - Journal of Petrology, 2018 - academic.oup.com
The sulfur (S) and copper (Cu) contents of primitive mid-ocean ridge basalts (MORB) and
ocean island basalts (OIB) are similar, although the latter are thought to be derived from …