Sentences with phrase «predominantly from charcoal»

For their research, the UW and Harvard - Smithsonian scientists analyzed radiocarbon dates from Wyoming and Colorado that were recovered predominantly from charcoal hearths, which provide a direct record of prehistoric human activity.

Not exact matches

The team used the data from charcoal in coal to propose that the development of fire systems through this interval was controlled predominantly by the elevated atmospheric oxygen concentration (p (O2)-RRB- that mass balance models predict prevailed.

For example: • Evidence of past fire regimes has been predominantly derived from charcoal records extracted from terrestrial wetland sites and near - coastal marine cores....»