‘who’s system stratigraphy’
Wednesday 24th July
My day
morning transgressions with fast falling sands bringing rich new biota
afternoon regressions of dark dead anoxic shales closed inwards
‘who’s system stratigraphy’
Wednesday 24th July
My day
morning transgressions with fast falling sands bringing rich new biota
afternoon regressions of dark dead anoxic shales closed inwards