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THE ONSET OF METAMORPHISM IN ORDINARY AND CARBONACEOUS CHONDRITES

Grossman, JEFFREY N., Brearley, ADRIAN J.(2005). THE ONSET OF METAMORPHISM IN ORDINARY AND CARBONACEOUS CHONDRITES. METEORITICS & PLANETARY SCIENCE, 40(1), 87-122. https://doi.org/10.1111/j.1945-5100.2005.tb00366.x

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Datasets

number	title	Methods	variables analyzed
2	Mean compositions of coarse-grained (non-matrix) ferroan olivine (wt%)	EMP, CALC	MgO, Al2O3, SiO2, P2O5, CaO, TiO2, Cr2O3, MnO, FeO, TOTAL, FAYALITE

4	Compositions of coexisting areas of Na-rich and K-rich mesostasis in chondrules from Semarkona, Chainpur, and Sharps	EMP	Na2O, MgO, Al2O3, SiO2, P2O5, Cl, K2O, CaO, TiO2, Cr2O3, MnO, FeO, TOTAL

5	Mean compositions of mesostasis in randomly selected chondrules with coexisting olivine compositions of Fa>10	EMP, CALC	Na2O, MgO, Al2O3, SiO2, P2O5, Cl, K2O, CaO, TiO2, Cr2O3, MnO, FeO, TOTAL, FAYALITE

6	Mean compositions of mesostasis in randomly selected chondrules with coexisting olivine compositions of Fa<3	EMP, CALC	Na2O, MgO, Al2O3, SiO2, P2O5, Cl, K2O, CaO, TiO2, Cr2O3, MnO, FeO, TOTAL, FAYALITE

7	Analyses by electron microprobe of fine-grained matrix in type 3 chondrites (wt%)	EMP, CALC	Na2O, MgO, Al2O3, SiO2, P2O5, Cl, K2O, CaO, TiO2, Cr2O3, MnO, FeO, Ni, FeS, TOTAL

MB-C	MetBase 4018 Compilation	EMP	Na, Mg, Al, Si, P, K, Ca, Ti, Cr, Mn, Fe, Ni

Methods

	method name	laboratory	method comment	More details are available for the following variables
	CALCULATED	UNKNOWN	N/A
	ELECTRON MICROPROBE	UNKNOWN	methods outlined in Grossman et al. (2002), making use of a 5 × 5 μm rastered beam, 20 nA beam current, 15 kV accelerating voltage, and completing the integration of the Na peak within 10 sec of unblanking the beam

Samples

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