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Julius Haast and the discovery of the origin of alpine lakes.
Annals of Science 2024 Februrary 6
This article investigates Haast's claim that in March 1862 he independently reached the same controversial conclusion as Ramsay, that lake basins in previously glaciated regions were formed by ancient glaciers. Both men's views fuelled a passionate debate in British scientific societies. However, science historians largely ignore Haast's contribution or imply he knew about Ramsay's 'theory' before coming to a conclusion about Southern Alps lakes.To assess whether Haast independently reached that conclusion in March 1862, field records, correspondence, reports, newspaper articles, and scientific publications are examined. Of significance are communications with geologists Hochstetter, Hector, and Ramsay, botanist Hooker, and physicist Tyndall. Consideration of what Haast observed in March 1862 is also critical.However, Haast's 1862 conclusion differs from Ramsay's. While Ramsay was convinced ancient glaciers scooped out rock basins, resulting in deep lakes, Haast believed ancient retreating glaciers left moraines that dammed valleys, resulting in shallow lakes. Regardless of their differences, after Haast read Ramsay's paper in 1864, he applied Ramsay's 'theory' to New Zealand's alpine lakes and proposed an excavation process.The essence of both Ramsay's and Haast's conclusions has been confirmed by research in formerly glaciated regions worldwide. However, Haast's contribution to glaciology is overlooked or underemphasized, and warrants being more widely acknowledged.
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