From the referenced paper:
The frigid concentration or freezing of seawater is an important natural phenomenon in the polar regions and results in the precipitation of a different sequence of salts ...
During the 1999/2000 summer a group of four people visited the Bunger Hills (66 degrees 20 minutes S, 100 degrees 50 minutes E), an area of ice-free rock situated in Wilkes Land, eastern Antarctica, ...