zankaon

December 23, 2011

A Return to Phanerozoic Average Sea Level?

Filed under: Letters from Ionia — Tags: — zankaon @ 2:18 am

Might we be near the end of a large cyclical regression; not so different from Permian end regression? Statistically might it not seem more likely that we are due to revert at least towards an average of sea level for overall Phanerozoic, or even a further transgression? Might this be a natural underlying trend, independent of any superimposed anthropomorphic effect? Might we be headed for an Eocene/Paleocene world?

30 million years hence, what might our ‘present’ stratum (pl: strata) of say 10 million years look like? Might there be any evidence of mankind? For example, if we occupy the middle of such strata, then plus or minus 5 million years. For the past 5 million years, there was no effect. For the future 5 million years, transgression and Yellowstone’s Western and Midwest repeated ash fallout would seem to reveal nature’s dominant hand. For elevation of sea level to less than Cretaceous peak, most of southern U.S. would be inundated, and likewise for eastern coast. The Seaway would flood and enlarge Great Lakes into an inland sea. All coastal cities, and inland lake ports would become reefs initially, and then dissolution. Humanity would would once again be on the move. Therefore, might there be no evidence of mankind’s handiwork in such strata (stratum); not even hard plastic cherts? So from a geological perspective, mankind’s impact on the environment might be quite negligible, in comparison to nature’s broader, deeper, more sustainable ways. Does our myopia greatly underestimate nature’s scope and impact, in comparison to that of mankind’s? Does nature ‘rule the roost’, such as for any nascent global cooling, based on solar constant variation? TMM

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