hemipristis Posted January 12, 2021 Share Posted January 12, 2021 On 1/13/2019 at 9:33 AM, Coco said: In France also it is forbidden to take them. It is in the states as well 'Those who cannot remember the past are condemned to repeat it.' George Santayana Link to comment Share on other sites More sharing options...
Coco Posted January 12, 2021 Share Posted January 12, 2021 On 13/01/2019 at 12:33 AM, Coco said: In France also it is forbidden to take them. I guess you answer that. We should have left my sentence in your quote so that everyone understood. The speed of manufacture of a stalagmite or a stalactite also depends in my opinion on the rate of CaCo3 (calcite) carried by the water. I am thinking in particular of certain sources rich in calcite which make it possible to cover an object with calcite in a few days (travertine). Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
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