Not quite. Shocked quartz has been proven to be due only to impact.
[or at H-Bomb test sites].
Andrew Grebneff wrote:
>
> In all of the recent works I have read on extinction events, those
> other than the K-T have been noted as LACKING tektites, iridium
> enrichment etc.
>
> Also, shocked quartz can be produced by volcanic activity; it was
> once regarded as being impact-only.
>