Hello. very interesting subject. But for me probably will be rather difficult. As I in physics am not so strong, but nevertheless there is a wish to understand àðõè. I will explain why. My purpose of visit of this forum was to find the expert who has skills in definition of radio-carbon dating. And this interest is chosen not casually. At some stage I noticed that the radio-carbon method shows not those data. And if to understand in essence that can be found places where cretaceous layers are shifted by the coal. Though by natural definition it is possible to call with confidence 100% cretaceous prime, and then have to be coal. But radio-carbon measurements for any reason show on a turn. Especially as chalk in itself has to stand as the coal which has faded from time. Other aspect. http://fotki.yandex.ru/users/ibr2020-12/view/674138?page=0 To us this photo it is noticed as limestones any breed blocks still. But in my opinion it is sandstone hardened. I approximately calculated as the hardened breeds of sandstones were formed. And for me big surprise began to see and understand that before sandstones were formed there could be still any life on a planet. Moreover and in such quantity. I certainly don't say goodbye but that more while I won't be able to tell about it. After all I couldn't finish the author at all the picture to show on this district.