- concretionary horizon
- <geod.> горизонт с конкрециями
Англо-русский технический словарь.
Англо-русский технический словарь.
Wenlock Group — (Wenlockian), in geology, is the middle series of strata in the Silurian (Upper Silurian) of Great Britain. This group in the typical area in the Welsh border counties contains the following formations: Much Wenlock Limestone Formation, 90 300 ft … Wikipedia