Assertion: archaeologist | /r/CapableOf | draw on sediment cores
Facets:
value: to determine lake levels
type: PURPOSE
Source sentences:
text: Archaeologists have drawn on sediment cores to determine lake levels, ice-core data from the the Quelccaya Glacier that's disappearing due to climate change, and a large number of radiocarbon dates from sites in the region to understand the impacts of climate.