@base . a ; "0022-1376" ; . a , , ; , , ; "˜The œjournal of geology." ; ; ; ; "0022-1376" ; ; ; "0022-1376" ; ; "0022-1376" ; "˜The œJournal of geology" , "˜The œjournal of geology." ; ; "http://www.journals.uchicago.edu/JG/journal/" , "http://www.jstor.org/journals/00221376.html" . a . a ; ; "20210828175000.0"^^ ; ; . . a , ; "˜The œJournal of geology" . "Illinois" . a ; "0022-1376" ; . a ; .