Missing Lake Sediments Reveal Glaciers Lingered in Hidden Basins of the

Deep beneath a German basin, a drill core reveals three ancient invasions

A 166-meter drill core from the overdeepened Tannwald Basin in southwestern Germany reveals at least three distinct glacial advances by the Rhine Glacier and dramatic ice-induced deformation deep underground.

Missing Lake Sediments Reveal Glaciers Lingered in Hidden Basins of the

Beneath the rolling hills of Upper Swabia in southwestern Germany, glacial scientists expected to find the calm, layered muds of ancient lakes. Instead, two new drill cores recovered from buried basins carved by the Rhine Glacier have delivered a surprise: almost no classic lake deposits at all. The findings, published in the journal Scientific Drilling as part of the International Continental Scientific Drilling Program project Drilling Overdee…