Ries seismite and sand spikes in the Upper Freshwater Molasse near

Sand spikes pinpoint powerful palaeoseismicity

Geographic and geologic situation in the study area in southern Germany

Shocked quartz in distal ejecta from the Ries impact event (Germany) found at ~ 180 km distance, near Bernhardzell, eastern Switzerland

Sand spikes pinpoint powerful palaeoseismicity

Shocked quartz in distal ejecta from the Ries impact event (Germany) found at ~ 180 km distance, near Bernhardzell, eastern Switzerland

Volker SACH, Researcher, Dr. rer. nat.

New discovery of two seismite horizons challenges the Ries–Steinheim double-impact theory

Shocked quartz in distal ejecta from the Ries impact event (Germany) found at ~ 180 km distance, near Bernhardzell, eastern Switzerland

Scientists Have a New Explanation for Mysterious Sand Spikes - The New York Times

PDF) New discovery of two seismite horizons challenges the Ries-Steinheim double-impact theory