This is the boulder, once part of a sed
That became deeply buried in its original bed,
Came under conditions of metamorphic regimes
And became granitic, by golly it seems.
A billion years old and a dozen or more,
It traveled for miles and miles galore
At a snail-like pace, embedded in ice,
The Pleistocene ice, the Pleistocene ice,
Since accouchement of so ancient a birth
In the Canadian Shield of North America earth.
(It’s awful, but the best I can do.)
J H. Bretz