This summer I have been busy prepping samples we collected in January on a large terrace 10-20 m above the modern Buffalo National River channel. The terrace consists of a beveled bedrock surface overlain with up to 3 m of alluvial deposits, predominantly sand. Many of the terraces are used as hay pastures that makes minimal disturbance and makes access a little easier. We collected several samples along two perpendicular transects and in 4 trenches to find out how long it takes to build one of these terraces so that we will know the error associated with taking only a few ages from other terraces in the Buffalo catchment. It’s one more step towards finding out how long it took the river to carve the spectacular Buffalo River valley. –Helen B.
An image of the terrace from Google Earth.
A pit with vertical OSL samples.
The beautiful bluffs characteristic of the Buffalo River.