from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun An ancient
lake, especially one only visible geologically
from Wiktionary, Creative Commons Attribution/Share-Alike License
The youngest was a shallow palaeolake, 'Coipasa', radiocarbon-dated between 11,500 and 13,400 calendar years before present (cal. yr bp).
The existence of an older deep palaeolake, 'Minchin', was postulated on the basis of two published radiocarbon dates (about 30,000 and 32,000 cal. yr bp) of shells from outcropping sediments.
Published radiocarbon dates indicate that palaeolake Tauca existed from about 13,000 to 18,000 cal. yr bp
The youngest deep palaeolake, 'Tauca', was previously dated using carbonate fossils from outcropping sediments and carbonate bioherms (reefs) that mark past highstands.