"After the deposition of the Schenectady Formation, the sea
drained."
(where did the water go, and where is the drain plug located?)
"The overlying Devonian rocks were laid by an advancing
shoreline"
(no comment!)
"Neutron logs measure the abundance of hydrogen atoms in
formations. This is measured by lowering high energy fast
neutrons in the sonde."
(Careful not to spill those neutrons)
an amusing and artistic illustrated answer to a request for a
tectonic cross-section of the Pacific Ocean:
Other sites containing similar amusing answers
https://www.futilitycloset.com/2022/04/14/coal-is-decayed-vegetarians/
A much more extended collection used to be here -
http://www.keele.ac.uk/eesg/students/linksandresources/examhowlers/
but in the remorseless removal of humour from university websites,
sadly is no more to be found at the original site
but it is preserved by the wayback machine: https://web.archive.org/web/20100727193442/http://www.keele.ac.uk/eesg/students/linksandresources/examhowlers/
(give thanks to and support the Internet Archive)