Tillites are rocks formed from till, which are glacial deposits. Period. They are in no wa
Tillites are rocks formed from till, which are glacial deposits.
They are in no way deposited by "flood waters" nor are they
formed by anything other than glacial activity, and later
indurated. (What do the Creationism Pseudoscientists mean by
"flood waters?" Fluvial floodwaters? Lacustrine floodwaters?
Paludal floodwaters? Or their fictional construct of "Noachian
Deluge Global Floodwaters?)
Striations are a general term for preferentially oriented
longitudinal grooves. Rocks can be striated by glacial movement
(i.e., "glacial striations"), faulting ("slickensides") or shells
of organisms can be striated; but this is not the point.
The point is that glaciers and the alpinoarctic environment produce
a unique and diagnostic set of depositional morphologies and
environmental indicators of that glacial depositional
"Flood waters" is such a vague geomorphic term (see above) that
it is essentially meaningless without some sort of modifier (see
also above). River flood water deposits differ from lake flood water
deposits, etc., ad infinitum for any sort of flow from a flood event.
One key demarcation in this argument, aside from the definitions
of striae and tillites is that till (whence coemth tillites) is
a glacial deposit which IS UNSORTED and UNREWORKED by glacial
meltwater. It is a primary glacial deposit. In no way could
floodwaters of any kind (which, are, of course, water borne)
deposit anything as unsorted and unstratified that could
possibly be so grossly misidentified as till.
SS> As a strictly personal idea, I believe a large majority of the
SS> limestone deposits were a product of the flood.
Your personal idea has no scientific merit. Limestones are
either direct marine chemical precipitates, formed in concert
with evaporites or the accumulation of untold trillions and
trillions of microscopic calcareous organisms; which, BTW,
REQUIRE quiet, deep, and probably anoxic water for long periods
of time (millions of years) for the accumulations of such vast
thicknesses of biogenic carbonate rocks known from around the
E-Mail Fredric L. Rice / The Skeptic Tank