The rock samples deposited in the Survey collections by Archibald Geikie are listed on a spreadsheet, which will be updated when more slides are imaged or if URLs change.
Detrital zircon analysis of sandstones interbedded with c . 464 Ma ignimbrites in the lower Mweelrea Formation of the South Mayo Trough, western Ireland, suggests Ordovician source-rock proven
Neoproterozoic glaciogenic outcrops are mostly limited to the southwestern and northwestern margins of the Tarim basin and the Tianshan Mountains. Only two glaciogenic diamictites are recorded in the
