maps12101-sup-0001-FigS1.pdfapplication/PDF9935KFig S1: EET 87531,131 combined three-element map where red = Mg number, green = Ca, blue = Si.
maps12101-sup-0002-FigS2.pdfapplication/PDF8928KFig S2: QUE 94200,25 cross-polarized transmitted light.
maps12101-sup-0003-FigS3.pdfapplication/PDF4561KFig S3: GRO 95574,11 backscattered-electron image.
maps12101-sup-0004-FigS4.pdfapplication/PDF16091KFig S4: QUE 97001,35 combined three-element map where red = Mg, green = Ca, blue = Fe.

Table S1: Summary of argon isotopic characteristics for all samples.

Table S2: For each clast with 40Ar-39Ar data, a photo, composition (when available), classification, Ar isotopic data, and notes on the decision-making process to arrive at reported ages are included. The column “zero trapped” contains data uncorrected for trapped Ar shown as a traditional plateau plot, isochron, inverse isochron, and cosmochron. When data indicated a clear, nonzero, trapped component, this component was subtracted and the results shown as a plateau plot in the “isochron trapped” column. Atmospheric Ar (40Ar/36Ar = 295.5) was subtracted from all samples and shown in the “atm trapped” column, although this is a gross overcorrection for all samples considered and is only meant to be illustrative.

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