- Map key (and split map copy): “Back Matter” PDF (19 MB) from the map + article at geoscienceworld.org
- Text explanation in article without map at USGS.gov (see page 7 of 28)
Unfortunately, I cannot find a non-rasterized digital version even though the original clearly was a digitally typeset document.
Reminds me of the penultimate verse of the Complete History Of The Soviet Union, Arranged To The Melody Of Tetris (2010) by Pig With The Face Of A Boy.
And now the wall is down, the Marxists frown There’s foreign shops all over town When in Red Square, well don’t despair There’s Levi’s and McDonald’s there The US gave us crystal meth And Yeltsin drank himself to death But now that Putin’s put the boot in, Who’ll get in our way?