Assertion: delta's channel | /r/HasProperty | abandoned
Facets:
Source sentences:
text: Experimental channels are abandoned because local fan margin progradation decreases river slope and hence transport capacity, causing channels to fill with sediment.
text: receded, flow settled into a channel that had been abandoned
text: When this happens, channels are abandoned and a new channel shifts laterally over the delta-plain: old delta lobes are left and new ones are built.