Figure 1: Mn–Cr isochron diagrams for carbonates in four CM chondrites. | Nature Communications

Figure 1: Mn–Cr isochron diagrams for carbonates in four CM chondrites.

From: Evidence for the late formation of hydrous asteroids from young meteoritic carbonates

Figure 1

(a) Calcite in the Murchison CM 2.5 chondrite. (b) Calcite in the Y791198 CM 2.4 chondrite. (c) Dolomite in the ALH83100 CM 2.1 chondrite. (d) Dolomite in the Sayama CM 2.1 chondrite. The vertical axis shows 53Cr/52Cr described as the permil deviation (δ53Cr) from the value of the synthetic calcite standard. Error bars (±2σ) on both 53Cr/52Cr and 55Mn/52Cr represent the external reproducibility or the internal precision, whichever is larger. MSWD, mean square weighted deviation.

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