The Nadiza River EarthCache

The Nadiza River

Its turqoise waters, torrential during the frequent storms, originate under the massive Stol limestone range.The limestone in combination with rains does tum water turqoise. At the foot of mount Matajur it turns south, crosses the border into Italy and concludes it’s 60 kilometer journey when it joins the river Ter (Torre).The Nadiža has carved out pools,caves and gorges, as well as depositing numerous shingle beaches. It is one of the cleanest and warmest Alpine rivers, home to the marble trout, rainbow trout and the local crayfish Austropotamobius pallipes italicus. As such it is a natural paradise for bathers and fly fishermen.   

Geological information:

A river is classified as either alluvial, bedrock or some mix of the two. Alluvial rivers have channels and floodplains that are self-formed in unconsolidated or weakly-consolidated sediments. They erode their banks and deposit material on bars and their floodplains. Bedrock rivers form when the river downcuts through the modern sediments and into the underlying bedrock. This occurs in regions that have experienced some kind of uplift (thereby steepening river gradients) or in which a particular hard lithology causes a river to have a steepened reach that has not been covered in modern alluvium. Bedrock rivers very often contain alluvium on their beds; this material is important in eroding and sculpting the channel. Rivers that go through patches of bedrock and patches of deep alluvial cover are classified as mixed bedrock-alluvial.

Alluvial rivers can be further classified by their channel pattern as meandering, braided, wandering, anastomose or straight. The morphology of an alluvial river reach is controlled by a combination of sediment supply, substrate composition, discharge, vegetation, and bed aggradation

• Youthful river: A river with a steep gradient that has very few tributaries and flows quickly. Its channels erode deeper rather than wider. Examples include the Brazos, Trinity and Ebro rivers.
• Mature river: A river with a gradient that is less steep than those of youthful rivers and flows more slowly. A mature river is fed by many tributaries and has more discharge than a youthful river. Its channels erode wider rather than deeper. Examples include the Mississippi, Thames rivers.
• Old river: A river with a low gradient and low erosive energy. Old rivers are characterized by flood plains. Examples include the Yellow, Ganges, Nile rivers.
• Rejuvenated river: A river with a gradient that is raised by tectonic uplift.

Unigueness of Nadiza river and this place:

In this part / stated coordinates Nadiza river has formed several small coves (below the old bridge called Napoleon) and nearby one small cave with Oblique-slip fault (above attached demo picture in the middle and right upper picture in this listing). Oblique-slip faulting suggests dip-slip faulting and strike-slip faulting. It is caused by a combination of shearing and tension of compressional forces. The Nadiza cave fault is the large disruption of the earth crust in NW-SE direction.   

Oblique-slip fault picture demonstration and above stated description have been taken from free source wikipedia:

You do not have to wait for the permission

1. Measure the relative movement along the fault and the direction of the movement.

2. Why has this river a typical turqoise/smaragd colour? What causes this river to be a typical turqoise colour?

3. The Nadiza river is an Alluvial river. How would you classify this river: Youthful, Mature, Old or Rejuvenated?

take a picture of youself with GPS showing the river with small cave and the slip fault in the background. 

IT IS OPTIONAL

Have you found or placed a few Earthcaches and would like to show off your achievement? Would you like to place your own? Visit Earthcache.org to create one or request your Earthcache Master Pin.