Based on the metamorphic rock at Van Hise Rock, Rock Springs, the protoliths will become quartzite and phyllite. 
<h3>What rocks will the protoliths form?</h3>
The Sandstone(Quartz) will go through processes and eventually deform into the rock known as quartzite.
Shale will go through similar degradation processes to become the rock,  phyllite.
Find out more on protoliths at brainly.com/question/13496997.
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Answer:
Delta
Explanation:
Delta is a geographical term that describes the formation of wetlands. It is formed from the slow movement of water and deposit from a river into a larger water body. For example lake, sea and ocean. A vivid example is a place where the River Nile moves at a slower pace into the Mediterranean Sea.
Hence, in this case, as a river reaches its mouth it is often affected by incoming tides resulting in a formation called a DELTA.
 
        
             
        
        
        
West Siberian Plain, Russian Zapadno-sibirskaya Ravnina, one of the world's largest regions of continuous flatland, central Russia. It occupies an area of nearly 1,200,000 square miles (3,000,000 square km) between the Ural Mountains in the west and the Yenisey River valley in the east.
        
             
        
        
        
Here is an example! Hope it helps