TY  - RPRT
TI  - Element distribution in some trough and platform types of black shale and associated rocks
AU  - James David Vine
AU  - E.B. Tourtelot
AU  - J. R. Keith
PY  - 1969
DO  - 10.3133/b1214h
UR  - https://pubs.usgs.gov/publication/b1214H
ID  - b1214H
ER  -