Unformatted text preview: lative estimate date. shellbeads used often to date sites. use different materials to try date stuff. D. Absolute Dates – Chronometric Dating- Most absolute dating methods are not that precise/accurate. diffi-cult to provide exact date- mostly expressing in time span or time range. + or - range – Time Span/Range, Need Suite of Dates, Use Different Dating Methods E. Dendrochronology -Master Tree Ring Chronology- reflect temperature and rainfall over time. – can date to year that tree is cut -- Problem w/ Complacent Trees F. Obsidian Hydration – Obsidian: Can Employ Geochemical Sourcing Methods (XRF). direct age determination. Measure Hydration Layer-microscopic- more time exposed to air = thicker hydration layer. - in microns; Best as Relative Dating Method; Attempts to Use as Absolute Dating Method; Some Problems G. 14C or Radiocarbon Age Determination Radiometric Dating Technique...
View Full Document
- Spring '09
- Radiocarbon dating, Dendrochronology, Dating methods, Radiocarbon Age Determination Radiometric Dating Technique