Journal ArticleDOI
Chrome spinel-hosted melt inclusions in Paleoproterozoic primitive volcanic rocks, northern Finland: Evidence for coexistence and mixing of komatiitic and picritic magmas
Eero Hanski,Vadim S. Kamenetsky +1 more
Reads0
Chats0
TLDR
In this article, the authors investigated the compositional features of the ultramafic volcanic rocks at the time of melt entrapment and found a good correlation between the major element compositions of the melt inclusions and their host spinels, with picritic melts being found in high-Ti spinels and komatiitic melts in low-Ti spinsels.About:
This article is published in Chemical Geology.The article was published on 2013-04-08. It has received 18 citations till now. The article focuses on the topics: Melt inclusions & Incompatible element.read more
Citations
More filters
Journal ArticleDOI
Deep hydrous mantle reservoir provides evidence for crustal recycling before 3.3 billion years ago
Alexander V. Sobolev,Alexander V. Sobolev,E. Asafov,Andrey A. Gurenko,Nicholas T. Arndt,Valentina Batanova,Valentina Batanova,Maxim Portnyagin,Maxim Portnyagin,Dieter Garbe-Schönberg,Allan Wilson,Gary R. Byerly +11 more
TL;DR: Hydrogen isotopes and compositions of melt inclusions in olivine in komatiites indicate a hydrous source produced by recycling of seawater-altered crust into the deep mantle over 3.3 billion years ago, which implies that a deep hydrous mantle reservoir has been present in the Earth's interior since at least the Palaeoarchaean era.
Journal ArticleDOI
Archaean andesite petrogenesis: Insights from the Grædefjord Supracrustal Belt, southern West Greenland
Kristoffer Szilas,J. Elis Hoffmann,J. Elis Hoffmann,Anders Scherstén,Thomas F. Kokfelt,Carsten Münker +5 more
TL;DR: In this paper, the authors presented new whole-rock major, trace and platinum-group element data for meta-volcanic rocks from the Mesoarchaean Graedefjord Supracrustal Belt (GSB), located within the Tasiusarsuaq terrane, southern West Greenland.
Journal ArticleDOI
Polymineralic inclusions in mantle chromitites from the Oman ophiolite indicate a highly magnesian parental melt
TL;DR: In this article, polymineralic inclusions interpreted as melt inclusions in chromite from the dunitic Moho Transition Zone in the Maqsad area of the Oman ophiolite have been analysed and compositions integrated using a rastering technique on the scanning electron microscope.
Journal ArticleDOI
Ultra-depleted 2.05 Ga komatiites of Finnish Lapland: Products of grainy late accretion or core-mantle interaction?
Igor S. Puchtel,Andrea Mundl-Petermeier,Andrea Mundl-Petermeier,Mary F. Horan,Eero Hanski,Janne Blichert-Toft,Richard J. Walker +6 more
Journal ArticleDOI
Empirical constraints on partitioning of platinum group elements between Cr-spinel and primitive terrestrial magmas
TL;DR: In this article, the authors investigated the role of Cr-spinel fractional crystallization on the PGE geochemistry of primitive crspinel, measured by LA-ICP-MS, from nine volcanic suites covering various tectonic settings including island arc picrites, boninites, large igneous province picrites and mid-ocean ridge basalts.
References
More filters
Chemical and isotopic systematics of oceanic basalt : implications for mantle composition and processes
TL;DR: In this article, trace-element data for mid-ocean ridge basalts and ocean island basalts are used to formulate chemical systematics for oceanic basalts, interpreted in terms of partial-melting conditions, variations in residual mineralogy, involvement of subducted sediment, recycling of oceanic lithosphere and processes within the low velocity zone.
Journal ArticleDOI
Chemical and isotopic systematics of oceanic basalts. Implications for Mantle Composition and Processes
Journal ArticleDOI
Mantle geochemistry: the message from oceanic volcanism
TL;DR: Basaltic volcanism'samples' the Earth's mantle to great depths, because solid-state convection transports deep material into the (shallow) melting region as mentioned in this paper.
Journal ArticleDOI
Neodymium isotopes in the Colorado Front Range and crust–mantle evolution in the Proterozoic
TL;DR: In this article, an empirical model is constructed that may provide accurate crust-formation ages f or rocks of all ages, based on the isotopic data of major rock types of the basement underlying the Rocky Mountains in Colorado.
Journal ArticleDOI
Inter-laboratory note. Laser ablation inductively coupled plasma mass spectrometric transient signal data acquisition and analyte concentration calculation
TL;DR: In this paper, the authors discuss data acquisition and reduction considerations in LA-ICP-MS analysis and suggest optimum data acquisition parameters for time-resolved data acquisition, sensitivity calibration is obtained from reference materials with known analyte concentrations and naturally occurring internal standards are used to correct for the multiplicative correction factors.