: St ates ▁and ▁territ ories ▁established ▁in ▁ 1 9 4 6 ▁Category : St ates ▁and ▁territ ories ▁dis est ab lished ▁in ▁ 1 9 5 8 ▁Category : 1 9 4 6 ▁establish ments ▁in ▁France ▁Category : 1 9 5 8 ▁dis est ab lish ments ▁in ▁France ▁Category : 1 9 4 6 ▁establish ments ▁in ▁the ▁French ▁colonial ▁emp ire ▁Category : 1 9 5 8 ▁dis est ab lish ments ▁in ▁the ▁French ▁colonial ▁emp ire ▁Category : Form er ▁pol ities ▁of ▁the ▁Cold ▁War <0x0A> </s> ▁On col ites ▁are ▁sed iment ary ▁structures ▁composed ▁of ▁on co ids , ▁which ▁are ▁layer ed ▁structures ▁formed ▁by ▁cy an ob acter ial ▁growth . ▁ ▁On col ites ▁are ▁very ▁similar ▁to ▁st rom atol ites , ▁but , ▁instead ▁of ▁forming ▁columns , ▁they ▁form ▁approximately ▁spher ical ▁structures . ▁ ▁The ▁on co ids ▁often ▁form ▁around ▁a ▁central ▁nucle us , ▁such ▁as ▁a ▁shell ▁fragment , ▁and ▁a ▁calci um ▁carbon ate ▁structure ▁is ▁depos ited ▁by ▁enc rust ing ▁micro bes . ▁ ▁On col ites ▁are ▁indic ators ▁of ▁warm ▁waters ▁in ▁the ▁phot ic ▁zone , ▁but ▁are ▁also ▁known ▁in ▁contemporary ▁fresh water ▁environments . ▁ ▁These ▁structures ▁rarely ▁exceed ▁ 1 0   cm ▁in ▁diameter . ▁ ▁The ▁appearance ▁of ▁recent / sub re cent ▁fresh water ▁on co ids ▁has ▁been ▁documented ▁in ▁two ▁rivers ▁in ▁Bav aria : ▁the ▁Al z