ar ze ▁- ▁Die ▁un gew ö hn lichen ▁Ze ugen ▁eines ▁all t äg lichen ▁Natur sch aus piel s " ▁(" B raz ilian ▁Light ning - qu art z ▁- ▁The ▁Un us ual ▁Wit ness es ▁of ▁an ▁Every day ▁Nature ▁Show "), ▁Auf schluss , ▁no . ▁Jan ./ F eb ., ▁▁ 5 3 : 2 5 - 3 6 . ▁Heidel berg . ▁ ▁Kar f unk el , ▁J ., ▁J . ▁Add ad , ▁A . ▁G . ▁Bank o , ▁W . ▁Had rian , ▁and ▁D . ▁B . ▁Ho over . ▁ 2 0 0 1 . ▁" E lect rome chan ical ▁dis integration ▁- ▁an ▁important ▁weather ing ▁process ", ▁Z ▁Ge omorph ol ▁N ▁F , ▁ ▁no . ▁ 3 , ▁▁ 4 5 : 3 4 5 - 3 5 7 . ▁Berlin - St utt gart . ▁ ▁Kar f unk el , ▁J ., ▁J . ▁Add ad , ▁A . ▁G . ▁Bank o , ▁W . ▁Had rian , ▁F . ▁No ack , ▁and ▁D . ▁B . ▁Ho over . ▁ 1 9 9 9 . ▁" Trans ição ▁de ▁quart zo - alf a ▁para ▁quart zo - beta ▁em ▁conse q ü ência ▁de ▁desc arg as ▁atmos fér icas : ▁ex emplo ▁de ▁quart zo ▁gem ológ ico ▁em ▁dep ós itos ▁col uv ion ares " ▁(" Trans ition ▁of ▁Quart z - alpha ▁into ▁Quart