The oldest is the "'Puesto Antigual Member "', which is approximately 28.9 meters thick and consists mainly of sandstone deposited in the channels of a braided river system.
32.
Overall, the formation represents an ancient braided river system, made up mostly of sandstones and eolian ( wind-blown ) deposition, as well as siltstones deposited under swamp conditions.
33.
The Upper Rangitata River is known as one of the most important braided river habitats for the endangered black-fronted tern, the wrybill and the endangered upland longjawed galaxias.
34.
The controversy drew significant media coverage that launched the book and the Arctic Refuge into the public spotlight and prompted the creation of the Braided River in 2007.
35.
Presumably this was due to the short catchment, the tectonic uplift of its headwaters and the width of the braided river bed, which is a source of railway ballast.
36.
It also publishes conservation advocacy titles under the Braided River imprint, which is devoted to conservation education and is also a 501 ( c ) ( 3 ) nonprofit.
37.
Instead, the 1002 area grades from the rolling foothills of the Brooks Range northward to a low and relatively flat pan of treeless, tussocky tundra cut by wild, braided rivers.
38.
Immediately north of the township are the country's longest road bridge and longest rail bridge, both of which cross the wide shingle beds of the braided river at this point.
39.
As a braided river, it has a bed slope of 1 % in the first stretch from the lake and about 2 % in the balance reach of the river.
40.
However, anastomosing rivers typically consist of a network of low-gradient, narrow, deep channels with stable banks, in contrast to braided rivers, which form on steeper gradients and display less bank stability.
