Drefach Group

The Drefach Group is an Ordovician lithostratigraphic group (a sequence of rock strata) in west Wales. The name is derived from the village of Drefach near Meidrim (a.k.a. Mydrim) in Carmarthenshire. The Group comprises the Mydrim Shales Formation, the Mydrim Limestone Formation, the Hendre Shales Formation, Asaphus Ash Formation and at its base, the underlying Felin-wen Formation.

单词	Mydrim Shales
释义	Mydrim Shales 英语百科 Drefach Group The Drefach Group is an Ordovician lithostratigraphic group (a sequence of rock strata) in west Wales. The name is derived from the village of Drefach near Meidrim (a.k.a. Mydrim) in Carmarthenshire. The Group comprises the Mydrim Shales Formation, the Mydrim Limestone Formation, the Hendre Shales Formation, Asaphus Ash Formation and at its base, the underlying Felin-wen Formation.
随便看	Tarrif of Liner Conference tarriness tarring tarring device tarring machine tarring number tarring us tarring value Tarrio tarriour tarris tarrish Tar River tarro tar road tarrock Tarroja tar rope Tarros tarrow tarrows tarrs tarry tarryall tarry black stool