A Splashform Muong-Nong layered Tektite from China!???

It is virtually part of the definition of Muong Nong-type layered tektites: they are blocky and do not show flight-related modifications. We sometimes see delicate flow bands in splashforms, but flow-banding is very different from "layering" as it applies to Muong Nongs. To the best of my knowledge, this may be the first clearly spashform flight-modified layered tektite reported.


(If I am wrong about this and you know of other clear instances, please let me know!)


While generally held to be impact-proximal, the distribution of Australasian Muong Nongs is too great to deny flight. Some certainly flew hundreds of miles, but geometries like that shown here are lacking. Muong Nongs typically show lower temperatures of formation than common splashform tektites, and often include relict mineral grains and vesicular textures.


I have always been attracted to the proposition that layered tektites are the result of "dunes" of condensate droplets that settled and welded something like a welded ash flow tuff. But that doesn't explain specimens hundreds of miles from apparent ground zero. However they were propelled, it seems it happened after they were sufficiently solidified to resist plastic modifications in flight.


Until this specimen--- Here is a Muong Nong that retained enough plasticity after formation to take the form of a half-dumbell/teardrop.


Is it the first of its kind???

44.0 gms; Guang Dong, China

(Not for sale at this time)

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