<P> Fluvial terraces are remnants of the former floodplain of a stream or river . They are formed by the downcutting of a river or stream channel into and the abandonment and lateral erosion of its former floodplain . The downcutting , abandonment , and lateral erosion of a former floodplain can be the result of either changes in sea level , local or regional tectonic uplift ; changes in local or regional climate ; changes the amount of sediment being carried by the river or stream ; change in discharge of the river ; or a complex mixture of these and other factors . The most common sources of the variations in rivers and streams that create fluvial terraces are vegetative , geomorphic , and hydrologic responses to climate . More recently , the direct modification of rivers and streams and their watersheds by cultural processes have result in the development of terraces along many rivers and streams . </P>
<P> Fluvial terraces are remnants of the former floodplain of a stream or river . They are formed by the downcutting of a river or stream channel into and the abandonment and lateral erosion of its former floodplain . The downcutting , abandonment , and lateral erosion of a former floodplain can be the result of either changes in sea level , local or regional tectonic uplift ; changes in local or regional climate ; changes the amount of sediment being carried by the river or stream ; change in discharge of the river ; or a complex mixture of these and other factors . The most common sources of the variations in rivers and streams that create fluvial terraces are vegetative , geomorphic , and hydrologic responses to climate . More recently , the direct modification of rivers and streams and their watersheds by cultural processes have result in the development of terraces along many rivers and streams . </P>
when do stream terraces form when do stream terraces form
when do stream terraces form when do stream terraces form
by the downcutting of a river or stream channel into and the abandonment and lateral erosion of its former floodplain
by the downcutting of a river or stream channel into and the abandonment and lateral erosion of its former floodplain