Genesis of Neuburg Siliceous Earth

When 95 million years ago the Neuburg Siliceous Earth was created, large parts of South Germany were covered by the sea. In a bay within what is now Bavaria, the various strata of Neuburg Siliceous Earth were deposited on limestone sediment dating from the later Jurassic period (fig. 1).

After the sea receded, the limestone strata collapsed, forming so-called karst funnels into which the siliceous earth fell and was preserved (fig. 2). This is where a raw material was created which - wherever you search for it on this earth - is totally unique (fig. 3).