Assertion: erosion | /r/CapableOf | begin in the cambrian
Facets:
Source sentences:
text: Studies of these sediments indicate that it is likely that the erosion of the orogen began in the Cambrian and then intensified in the Ordovician.
text: Studies of these sediments indicate that it is likely that the erosion of the orogen began in the Cambrian and then intensified in the Ordovician.