TY  - RPRT
TI  - Layered, massive and thin sediments on Mars: Possible Late Noachian to Late Amazonian tephra?
AU  - M. G. Chapman
PY  - 2003
DO  - 10.1144/gsl.sp.2002.202.01.14
UR  - https://pubs.usgs.gov/publication/70023906
ID  - 70023906
ER  -