Eyles and Young state, "Most Neoproterozoic glacial deposits accumulated as glacially influenced marine strata along rifted continental margins or interiors." Worldwide deposition of dolomite might have reduced atmospheric carbon dioxide. The break up along the margins of Laurentia at about 750 Ma occurs at about the same time as the deposition of the Rapitan Group in North America, contemporaneously with the Sturtian in Australia. A similar period of rifting at about 650 Ma occurred with the deposition of the Ice Brook Formation in North America, contemporaneously with the Marinoan in Australia.  The Sturtian and Marinoan are local divisions within the Adelaide Rift Complex .
Using clenbuterol can enhance and worsen a pre-existing heart condition and/or blood pressure related issues . Some thinking and studies have shown that wasting away of the left side of the heart can occur at a rapid pace with high doses of clenbuterol use . If one has a pre-existing heart condition, it would be wise to take extra precaution before use.
Clenbuterol could possibly negatively affect bones, leading to higher bone fragility. This can increase the likelihood and risk of bone fractures.
Further studies and testings are needed to determine how deep and underlying the problems from use can go and would need to be done on humans for further confirmation.