Earth's heterogeneous mantle: A product of convection-driven interaction between crust and mantle
A Stracke - Chemical Geology, 2012 - Elsevier
Ubiquitous heterogeneity in the Earth's mantle has been documented by numerous
chemical and isotopic analyses of oceanic basalts. Despite the ever-increasing amount of …
chemical and isotopic analyses of oceanic basalts. Despite the ever-increasing amount of …
WATER, MELTING, AND THE DEEP EARTH H2O CYCLE
MM Hirschmann - Annu. Rev. Earth Planet. Sci., 2006 - annualreviews.org
Hydrous melting driven by changes in H2O storage capacity may occur in a variety of
settings in the mantle, including in oceanic basalt sources and in deeper regions above and …
settings in the mantle, including in oceanic basalt sources and in deeper regions above and …
The mean composition of ocean ridge basalts
The mean composition of mid‐ocean ridge basalts (MORB) is determined using a global
data set of major elements, trace elements, and isotopes compiled from new and previously …
data set of major elements, trace elements, and isotopes compiled from new and previously …
[HTML][HTML] A new method of discriminating different types of post-Archean ophiolitic basalts and their tectonic significance using Th-Nb and Ce-Dy-Yb systematics
E Saccani - Geoscience Frontiers, 2015 - Elsevier
In this paper, a new discrimination diagram using absolute measures of Th and Nb is
applied to post-Archean ophiolites to best discriminate a large number of different ophiolitic …
applied to post-Archean ophiolites to best discriminate a large number of different ophiolitic …
Geochemical fingerprinting of oceanic basalts with applications to ophiolite classification and the search for Archean oceanic crust
JA Pearce - Lithos, 2008 - Elsevier
Two geochemical proxies are particularly important for the identification and classification of
oceanic basalts: the Th–Nb proxy for crustal input and hence for demonstrating an oceanic …
oceanic basalts: the Th–Nb proxy for crustal input and hence for demonstrating an oceanic …
The amount of recycled crust in sources of mantle-derived melts
Plate tectonic processes introduce basaltic crust (as eclogite) into the peridotitic mantle. The
proportions of these two sources in mantle melts are poorly understood. Silica-rich melts …
proportions of these two sources in mantle melts are poorly understood. Silica-rich melts …
Sampling mantle heterogeneity through oceanic basalts: isotopes and trace elements
AW Hofmann - Treatise on geochemistry, 2003 - ui.adsabs.harvard.edu
Abstract Early History of Mantle GeochemistryUntil the arrival of the theories of plate
tectonics and seafloor spreading in the 1960s, the Earth's mantle was generally believed to …
tectonics and seafloor spreading in the 1960s, the Earth's mantle was generally believed to …
Serpentine and the subduction zone water cycle
This study explores a chemo-thermo-dynamic subduction zone model that solves for slab
dehydration during subduction. We investigate how changes in the incoming plate's …
dehydration during subduction. We investigate how changes in the incoming plate's …
Partial Melting Experiments of Peridotite + CO2 at 3 GPa and Genesis of Alkalic Ocean Island Basalts
R Dasgupta, MM Hirschmann, ND Smith - Journal of Petrology, 2007 - academic.oup.com
We document compositions of minerals and melts from 3 GPa partial melting experiments on
two carbonate-bearing natural lherzolite bulk compositions (PERC: MixKLB-1+ 2· 5 wt …
two carbonate-bearing natural lherzolite bulk compositions (PERC: MixKLB-1+ 2· 5 wt …
Subduction erosion: rates, mechanisms, and its role in arc magmatism and the evolution of the continental crust and mantle
CR Stern - Gondwana Research, 2011 - Elsevier
Subduction erosion occurs at all convergent plate boundaries, even if they are also
accretionary margins. Frontal subduction erosion results from a combination of erosion and …
accretionary margins. Frontal subduction erosion results from a combination of erosion and …