Seawater cycled throughout Earth’s mantle in partially serpentinized lithosphere

Kendrick, Mark A.; Hémond, Christophe; Kamenetsky, Vadim S.; Danyushevsky, Leonid V.; Devey, Colin W.; Rodemann, Thomas; Jackson, Matthew G.; Perfit, Michael R.

doi:10.1038/ngeo2902

Cited by 146 publications

(148 citation statements)

References 58 publications

Supporting

Mentioning

140

Contrasting

Order By: Relevance

“…These estimates of accuracy are based on the intermediate precision of results for NIST and USGS glasses analysed in different SHRIMP sessions calibrated by different methods (Table ; Figure a; Kendrick et al . ), and the typical repeatability of the measurements in the flux glass samples and calibrators (Table ).…”

Section: Resultsmentioning

confidence: 99%

“…The SHRIMP was calibrated for these measurements using either: (a) a suite of natural silicate glasses with known F mass fraction (see Kendrick et al . ); or (b) in‐house Li‐borate flux glass reference materials prepared from CaF 2 ‐doped oxide mixtures with the major element composition of average MORB (Figure a).…”

Section: Methodsmentioning

confidence: 99%

“…The measured 19 F signal was calibrated using 18 O as the internal standard element and the calibration curve constructed with either silicate glasses (Kendrick et al . ) or F‐doped Li‐borate flux glasses (Figure a). Measurements on Li‐borate glasses were corrected for the ‘blank’ of 5 μg g −1 F associated with the flux.…”

Section: Methodsmentioning

confidence: 99%

“…Halogens are widely used as geochemical tracers in silicate melts and aqueous fluids (Kendrick and Burnard , Kendrick et al . ), and volcanic degassing of halogens has a significant impact on atmospheric chemistry (Pyle and Mather , Kutterolf et al . ).…”

mentioning

confidence: 99%

See 3 more Smart Citations

Halogens (F, Cl, Br, I) in Thirteen USGS, GSJ and NIST International Rock and Glass Reference Materials

Kendrick

D'Andres

Holden

et al. 2018

Geostandard Geoanalytic Res

Self Cite

View full text Add to dashboard Cite

Fluorine, Cl, Br and I measurements are reported for eight international rock reference materials (BHVO‐2, BCR‐2, BIR‐1a, RGM‐2, AGV‐2, GSP‐2, JB‐2 and JR‐1), and new F data are reported for five silicate glass reference materials (NIST SRM 610 and 612, BHVO‐2G, BCR‐2G and BIR‐1G). Fluorine was measured by SHRIMP in the silicate glasses and in Li‐borate flux glasses prepared from the rock powders. Chlorine, Br and I were measured in vacuum‐encapsulated rock powders by the noble gas method (extended 40Ar/39Ar methodology). The methods yield reliable results: Fluorine has a repeatability of 1–16% in the flux glasses compared with 2–4% in the silicate glasses, which suggests incomplete homogenisation during flux melting, but F was not lost during fusion of flux glasses at 1080 °C. The noble gas method gave repeatability of 1–2% for samples included in a single irradiation and intermediate precision of 2% for Cl, 2–3% for Br and 3–10% for I in samples included in two irradiations. The accuracy of the measurements varies from 5% to 10%, based on the repeatability of our results, the agreement of different calibration procedures and uncertainty in experimentally determined neutron capture cross sections. Our results significantly improve upon the precision with which some of the halogens have been characterised in the selected reference materials previously.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Halogens (F, Cl, Br, I) in Thirteen USGS, GSJ and NIST International Rock and Glass Reference Materials

Kendrick

D'Andres

Holden

et al. 2018

Geostandard Geoanalytic Res

Self Cite

View full text Add to dashboard Cite

show abstract

“…In slabs cool enough for subcrustal serpentine to breakdown deeper than about 100 km, overlying mostly dehydrated sediments and igneous crust will interact with these fluids causing rehydration and re‐equilibration of the stable isotopic compositions to heavier arc‐like values. Similar models were developed by Walowski et al () to explain hydrogen isotopic values of arc basalts in the hot‐slab southern Cascades region and by Kendrick et al () to explain water and halogens in MORB and OIB.…”

Section: Resolution Of Dehydration Paradoxmentioning

confidence: 99%

Light Stable Isotopic Compositions of Enriched Mantle Sources: Resolving the Dehydration Paradox

Dixon

Bindeman

Kingsley

et al. 2017

Geochem Geophys Geosyst

View full text Add to dashboard Cite

Volatile and stable isotope data provide tests of mantle processes that give rise to mantle heterogeneity. New data on enriched mid‐oceanic ridge basalts (MORB) show a diversity of enriched components. Pacific PREMA‐type basalts (H2O/Ce = 215 ± 30, δDSMOW = −45 ± 5 ‰) are similar to those in the northern Atlantic (H2O/Ce = 220 ± 30; δDSMOW = −30 to −40 ‰). Basalts with EM‐type signatures have regionally variable volatile compositions. Northern Atlantic EM‐type basalts are wetter (H2O/Ce = 330 ± 30) and have isotopically heavier hydrogen (δDSMOW = −57 ± 5 ‰) than northern Atlantic MORB. Southern Atlantic EM‐type basalts are damp (H2O/Ce = 120 ± 10) with intermediate δDSMOW (−68 ± 2 ‰), similar to δDSMOW for Pacific MORB. Northern Pacific EM‐type basalts are dry (H2O/Ce = 110 ± 20) and isotopically light (δDSMOW = −94 ± 3 ‰). A multistage metasomatic and melting model accounts for the origin of the enriched components by extending the subduction factory concept down through the mantle transition zone, with slab temperature a key variable. Volatiles and their stable isotopes are decoupled from lithophile elements, reflecting primary dehydration of the slab followed by secondary rehydration, infiltration, and re‐equilibration by fluids derived from dehydrating subcrustal hydrous phases (e.g., antigorite) in cooler, deeper parts of the slab. Enriched mantle sources form by addition of <1% carbonated eclogite ± sediment‐derived C‐O‐H‐Cl fluids to depleted mantle at 180–280 km (EM) or within the transition zone (PREMA).

show abstract

Super‐Deep Diamonds

Smith

Nestola

2021

Mantle Convection and Surface Expressions

View full text Add to dashboard Cite

Seawater cycled throughout Earth’s mantle in partially serpentinized lithosphere

Cited by 146 publications

References 58 publications

Halogens (F, Cl, Br, I) in Thirteen USGS, GSJ and NIST International Rock and Glass Reference Materials

Halogens (F, Cl, Br, I) in Thirteen USGS, GSJ and NIST International Rock and Glass Reference Materials

Light Stable Isotopic Compositions of Enriched Mantle Sources: Resolving the Dehydration Paradox

Super‐Deep Diamonds

Contact Info

Product

Resources

About