TY - RPRT TI - Paleoclimate and the origin of Paleozoic chert: Time to re-examine the origins of chert in the rock record AU - C. Blaine Cecil PY - 2015 DO - 10.2110/sedred.2015.3.4 UR - https://pubs.usgs.gov/publication/70223761 ID - 70223761 ER -