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2021-08-26

Institutions:

  • Université de Lorraine

Scientific fields:

  • Geology

Keywords:

  • Slow-spreading ridge; Igneous layering; Lower oceanic crust; Intrusion; Reactive porous flow; Atlantis Bank

Language:

ENGLISH

Sample kind:

  • Olivine gabbro samples from IODP Hole U1473A, section 65R5 (between 591.51 and 592.86 meters below seafloor)

License:

Creative commons Attribution + Noncommercial + ShareAlike ccby-nc-sa

Publisher:

OTELO

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Table S4 - Magma-Mush Interactions in the Lower Oceanic crust: Insights from Atlantis Bank Layered Series (Southwest Indian Ridge)

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2021-08-26

Description:

In-situ trace element contents of plagioclase, clinopyroxene and olivine analyzed with a ThermoFinnigan Element2 XR ICP-MS coupled with a Microlas-GeoLas Q+ housing a Lambda-Physik CompEx 102 excimer laser at Géosciences Montpellier (AETE-ISO regional facility of the OSU OREME, Montpellier University, France). Signal acquisition was performed in time-resolved acquisition mode, counting 2 min for blanks and 1 min for sample measurements. The laser frequency was 8 Hz with an energy density of ~12–15 J•cm2. Ablation was performed in He gas, which was mixed with Ar before entering the plasma. Clinopyroxene (cpx) was analyzed with a laser spot size of 77 µm, whereas a spot size of 102 µm was used for ol (olivine) and pl (plagioclase). Data were processed using the GLITTER software (Van Achterberg et al., 2001). All measured concentrations were calibrated to the synthetic glass NIST 612 using the values of Pearce et al. (1997). Internal standards used for the minerals were 43Ca for cpx and 29Si for pl and ol, previously measured for each point by EPMA.
The averaged values (and associated 2SD values) obtained by LA-ICP-MS analyses of the standard reference basalt BIR-1G are available at the end of Table S4, together with the average analytical errors for each element at the top.

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Uploaded on 2021-08-26

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Table_S4.xlsx 0
Methodology
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Measurements
Nature Abbreviation Unit
Trace elements Cs ppm
Trace elements Rb ppm
Trace elements Ba ppm
Trace elements Th ppm
Trace elements U ppm
Trace elements Nb ppm
Trace elements Ta ppm
Trace elements La ppm
Trace elements Ce ppm
Trace elements Pb ppm
Trace elements Pr ppm
Trace elements Sr ppm
Trace elements Nd ppm
Trace elements Zr ppm
Trace elements Hf ppm
Trace elements Sm ppm
Trace elements Eu ppm
Trace elements Gd ppm
Trace elements Tb ppm
Trace elements Dy ppm
Trace elements Y ppm
Trace elements Ho ppm
Trace elements Er ppm
Trace elements Tm ppm
Trace elements Yb ppm
Trace elements Lu ppm
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Remove 10.24396/ORDAR-86

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https://doi.org/10.24396/ORDAR-86
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