Rocks of the Motueka River

The gravel bars in  the Motueka Valley comprise a ranger of different rock types, which change downstream as new tributary valleys feed in.

Throughout the valley, the majority of the material (80% or more) comprises sandstones and argillites greywacke), which may be considered un interesting, but actually has a fascinating story to tell. These sandstones seem to match  sandstones now only found west of the Alpine Fault.   

The itinerary