D.E. Donaldson R.A. Lamarre D.H. Richter 1973 <p>The Soda Creek springs are a group of small, cold mineral&nbsp;springs on the southern flank of the eastern Alaska Range. The spring&nbsp;waters contain anomalous concentrations of carbon dioxide, sodium,&nbsp;chlorine, sulfate, boron, and ammonia and are actively precipitating&nbsp;deposits of calcite and aragonite. Sparingly present in these deposits are&nbsp;mixed-layer illite-montmorillonite clays and zeolite minerals. Low-temperature<br />metamorphic reactions in subjacent marine sedimentary&nbsp;rocks of Jurassic and Cretaceous age may have produced the fluids and&nbsp;silicate minerals. With only a few exceptions, cool bicarbonate-rich&nbsp;springs in Alaska are concentrated south of the Denali fault system in&nbsp;south-central Alaska, southeastern Alaska, and along the Kaltag-Tintina&nbsp;fault system. These areas are characterized by active or recently active<br />tectonism, major faults and folds, and an abundance of marine&nbsp;sedimentary rocks.</p> application/pdf en U.S. Geological Survey Soda Creek springs - metamorphic waters in the eastern Alaska Range article