TY  - RPRT
TI  - Late Ordovician (Turinian-Chatfieldian) carbon isotope excursions and their stratigraphic and paleoceanographic significance
AU  - Greg A. Ludvigson
AU  - B.J. Witzke
AU  - Luis A. Gonzalez
AU  - S.J. Carpenter
AU  - C.L. Schneider
AU  - F. Hasiuk
PY  - 2004
DO  - 10.1016/j.palaeo.2004.02.043
UR  - https://pubs.usgs.gov/publication/70026752
ID  - 70026752
ER  -