3. STRATIGRAPHY
Time Sequencing
Roster | Date | Author | Record |
---|---|---|---|
Features included within stratum | 2003-09-21 | jl | f423 (installation), f434 (accumulation A), f435 (accumulation A), f441 (accumulation A), f442 (accumulation A), f450 (unknown) [Input: N921jl.j] |