Good old Nicolas Steno (1638-1686), a Dane who was beatified by the Catholic Church over 300 years after his death, first stated three fairly straightforward tenets of stratigraphy:
(1) The Law of Superposition: in most circumstances, barring any subsequent overturning of layers, the oldest sedimentary rocks are on the bottom and the youngest are on the top:
(2) The Principle of Original Horizontality: most sequences are deposited in a horizontal or nearly horizontal plane,
and (3) The Principle of Lateral Continuity: Material forming any layer were continuous over the surface of the Earth unless some other solid bodies stood in the way:
I thought perhaps Steno's name was somehow related to stenography:
and this interesting graphic showing beginning consonants on the left hand, ending consonants on the right, and vowels in the thumb positions:
..."I keep thinking of Jim Robbins! It's ridiculous. He's only a male stenographer. . ." But, Steno has no connection here.
Or perhaps a connection to steganography, from the Greek "stegein," to cover:
which brought me to Stegosaurus or covered lizard:
I guess that about covers it.
Steph (aka Word Woman)
Four hour window in Boulder on Monday (9 a.m. to 1 p.m.)