When the cliff edge does not retreat uniformly, but instead is indented by headward eroding streams, a section can be cut off from the main cliff, forming a mesa.
12.
Alternatively, a water gap may be formed through headward erosion of two streams on opposite sides of a ridge, ultimately resulting in the capture of one stream by the other.
13.
These domes intrude the glacially eroded core of the stratovolcano and headward erosion has further modified the Level Mountain shield by incising youthful V-shaped stream canyons into the lava plateau margin.
14.
Through a process called headward erosion, it gradually moved eastward, gobbling up the land around its headwaters in Pac-Man fashion, until it met up with the ancestral upper Colorado.
15.
The flow reversal in lower Cedar Creek was probably accelerated by the downcutting of the St . Joseph River, which increased the velocity of its tributaries, causing them to erode toward their headwaters ( headward erosion ).
16.
The alluvium is " 10 feet ( 3 m ) or more thick in the lower reaches of the Plunketts Creek valley ", but only " 6 feet ( 2 m ) thick in headward tributary valleys ".
17.
In-flight photographs from Skylab 2 revealed the " puffy face syndrome " which prompted the addition of in-flight torso and limb girth measurements to gather more data on the apparent headward fluid shift on Skylab 3.
18.
"' Headward erosion "'is erosion at the origin of a stream channel, which causes the origin to move back away from the direction of the stream flow, and so causes the stream channel to lengthen.
19.
The meta-sedimentary rock along with the granite batholith that forms Black Mountain are remnants of what laid hidden beneath a sea and underground, that are now exposed by headward erosion that continues northward today into Arizona s Transition Zone.
20.
While additional deep testing may reveal other information, at this time the most appropriate hypothesis is to regard all of these adjacent landforms as non-cultural portions of the higher soils, dissected by centuries [ if not millennia ] of natural headward erosion and downslope weathering ."
