The Kirchbach Formation consists of shale with lenses of carbonate nodules and argillaceous limestone composed of 3 to 10 cm thick layers of carbonate nodules (mudstone to wackestone) separated by thin argillaceous seams. The nodules reach a maximum size of 30-40 cm diameter. Some nodules can be classified as polymict breccia ranging from fine-grained packstone and wackestone to float- and rudstone, including bioclasts, normal ooids, peloids and carbonate intra- and extraclasts. The organic remains are dominated by fragments of crinoids and echinoids, cephalopods, bryozoans, small foraminifers, calcareous algae and microproblematica. In addition brachiopods, heterocorals, molluscs and trilobites occur. Conodonts are fairly abundant mainly in biomicrite and micritic intraclasts.
Kirchbach Formation
SPALLETTA, CLAUDIA;VENTURINI, CORRADO
2015
Abstract
The Kirchbach Formation consists of shale with lenses of carbonate nodules and argillaceous limestone composed of 3 to 10 cm thick layers of carbonate nodules (mudstone to wackestone) separated by thin argillaceous seams. The nodules reach a maximum size of 30-40 cm diameter. Some nodules can be classified as polymict breccia ranging from fine-grained packstone and wackestone to float- and rudstone, including bioclasts, normal ooids, peloids and carbonate intra- and extraclasts. The organic remains are dominated by fragments of crinoids and echinoids, cephalopods, bryozoans, small foraminifers, calcareous algae and microproblematica. In addition brachiopods, heterocorals, molluscs and trilobites occur. Conodonts are fairly abundant mainly in biomicrite and micritic intraclasts.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
