Uranium Lead Dating
Uses uranium-lead ratios to estimate geological ages.
Role range: 1870-1927
Historical biography archive · Updated 2026-11-03
Bertram Boltwood Biography and Timeline
Follow Bertram Boltwood through 1 dated historical records for United States of America.
Bertram Boltwood, historical timeline
A chronological timeline drawn from matching World History Database records.
1Distinct records
1 of 1Page
1907–1907Years on this page
1907
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.