Fwd: EPISODE 800 NIAGARA ESCARPMENT….WINDOW OF TIME



Begin forwarded message:


From: ALAN SKEOCH <alan.skeoch@rogers.com>
Subject: EPISODE 800 NIAGARA ESCARPMENT….WINDOW OF TIME
Date: April 19, 2023 at 9:00:54 AM EDT
To: John Wardle <john.t.wardle@gmail.com>



Note: something has gone wrong with my computer…problem unsolved

EPISODE 799    WHAT DOES THIS PILE OF ROCK SAY?


alan skeoch
April 17, 2023



We descended through the Niagara Escarpment to the QEW

WHAT DO WE KNOW

1)  The Niagara Escarpment we know today is the result of geological processes that began more than 450 million years ago when the limestones, dolostones, shales, and sandstones of the Escarpment’s bedrock were formed.


2) 
The rock layers of the Niagara Escarpment date from the upper Ordovician (445 million year ago) to the lower Silurian era (420 million years ago); a period of 25 million years.

3) Escarpments are formed by one of two processes: erosion and faulting. Erosion creates an escarpment by wearing away rock through wind or water. One side of an escarpment may be eroded more than the other side. The result of this unequal erosion is a transition zone from one type of sedimentary rock to another
4)Today the Niagara Escarpment region is a rich mosaic of forests, farms, wetlands, lakes, recreational areas, the Bruce Trail and quarries together with villages, towns and cities. It features over 100 sites of geological significance, including many in which fossils of the Silurian and Ordovician Periods are preser.
5)  According to a new report prepared by a team of international scientists, deep-sea remains of ancient corals could be used to understand carbon dioxide in the oceans, both past and present. The report, published in the journal Nature Geoscience, uses coral fossils as a sort of time machine to investigate the rise of carbon dioxide and its role in ending the last ice age.
LOTS OF INFORMATION ABOUT OUR NIAGARA ESCARPMENT
MAKES ME THINK ABOUT THW SHORT WINDOW OF TIME THAT WE HAVE BEEN AROUND
 Look at the layers of limestone in the pictures.   This layering began 475 million years ago when our living space was covered with water.   How long have we been here?  Measured in hundreds of thousands perhaps but only couple of thousand as civilizations

alan





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