Fig. 1: µ182W data for individual (meta)chert and magnetite layers and composite samples of the Temagami banded iron formation (BIF), shales and BIF reference material.
From: Earth’s geodynamic evolution constrained by 182W in Archean seawater
The vertical light and dark gray, red, and blue bars represent the 2-standard error and 2-standard deviation, respectively, of all analyzed Alfa Aeasar standard solution session averages (n = 10), magnetite (n = 4), and (meta)chert samples (n = 4), respectively. Error bars reflect uncertainties of individual measurements (TIMS data, 2SE) or session averages (MC-ICP-MS data, 95% CI). Where applicable, small symbols represent replicate and/or duplicate measurements and larger symbols their respective averages. Symbols with dots and plus signs are data obtained by Thermal Ionization Mass Spectrometry (TIMS) and Multi-Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS), respectively.
