Derek Sears
Bay Area Environmental Research Institute/NASA Ames Research Center/University of Arkansas
	peak temperature vs peak width for Type 3 ordinary chondriteS Thermoluminescence peak temperature against peak width for samples of Allan Hills A77011 heated at the temperatures indicated (^oC, open circles, 0 = unheated) compared with these TL parameters for type 3 ordinary chondrites. There is a bimodal distribution in the data with type <3.5 in the lower cluster and type >3.5 in the upper cluster, and Allan Hills A 77011 can be transferred from one cluster to the other by heating above 500^oC. (Guimon et al., 1985, updated)