TY  - RPRT
TI  - Nature and origin of early and late cherts in the Leadville Limestone, Colorado
AU  - Norman G. Banks
PY  - 1970
DO  - 10.1130/0016-7606(1970)81[3033:naooea]2.0.co;2
UR  - https://pubs.usgs.gov/publication/70226766
ID  - 70226766
ER  -