Ern Jacoby's photos with the keyword: devon

rock’n stones 657

rock’n stones 657

Ern Jacoby
08 Jun 2025 8 9 247
Ourdall Luxembourg: 400 million year old Devonian schists with ripple marks, epicontinental sea sediments of thousands of metres sickness, transformed later on into schists followed by orogeny during carboniferous time.
rock'n stones 123

rock'n stones 123

Ern Jacoby
15 Aug 2020 6 3 246
Heiderscheidergrund Luxembourg: 400 million year old Devonian schists with ripple marks, epicontinental sea sediments of thousands of metres sickness, transformed later on into schists followed by orogeny during carboniferous time.