Coblenzian Stage

a subdivision of the lower series of the Devonian system, which was identified by the Belgian geologist A. Dumont in 1848. At present the term “Siegenian and Emsian stages” is used more often than the term “Coblenzian stage.” Deposits of the Coblenzian stage are represented by two basic types of rock: (1) sandstones and graywackes with Spirifer primaevus Stein., which are typical particularly in the Rhine area (in the region of Koblenz), as well as in the USSR in Kazakhstan and Eastern Siberia, and (2) Hercynian limestones with Spirifer togatus Barr., Karpinskia conjugula Tschern., and so forth, which are widely found in the Urals, Middle Asia, and Siberia (Salair).

单词	coblenzian stage
释义	Coblenzian Stage Coblenzian Stage a subdivision of the lower series of the Devonian system, which was identified by the Belgian geologist A. Dumont in 1848. At present the term “Siegenian and Emsian stages” is used more often than the term “Coblenzian stage.” Deposits of the Coblenzian stage are represented by two basic types of rock: (1) sandstones and graywackes with Spirifer primaevus Stein., which are typical particularly in the Rhine area (in the region of Koblenz), as well as in the USSR in Kazakhstan and Eastern Siberia, and (2) Hercynian limestones with Spirifer togatus Barr., Karpinskia conjugula Tschern., and so forth, which are widely found in the Urals, Middle Asia, and Siberia (Salair).
随便看	ecomf ecomienda ecomil e-comm ecomm e commerce e- commerce e-commerce ecommerce e-commerce and development report e-commerce and e-government lab e-commerce and online gaming regulation and assurance ecommerce and retail property in the uk ecommerce and tourism research laboratory e-commerce asia association ecommerce benchmarking association e commerce business architecture ecommerce capability development model e-commerce center e-commerce engineer e-commerce exchange e-commerce for engineered components e-commerce for freight transportation conference ecommerce foundation ecommerce framework g5