As a result, Walther spent the war years with his family on the Wallersee, a lake near Salzburg.
This was a time when he developed his interest in studying the local geology as he helped his father with scientific investigations.
He was promoted to Lecturer, Reader in 1964 and eventually Professor when he was appointed to a personal Chair in Mathematical Geosciences in 1977.
[3] Two of Walther's influential[4] sedimentology books are Sedimentation Models and Quantitative Stratigraphy (1975) and Cyclostratigraphy and the Milankovitch theory (1993).
The second[6] discusses Milankovitch cycles for coupled limestone and marl beds, drawing from his own research.