Middle Oxfordian coral facies of the Bałtów region, NE margin of the Holy Cross Mts, Poland

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Middle Oxfordian coral facies of the Bałtów region, NE margin of the Holy Cross Mts, Poland

Journal Title: Volumina Jurassica - Year 2004, Vol 2, Issue 1

Abstract

Coral facies developed on the Middle Oxfordian carbonate ramp were controlled in the region of Bałtów, NE margin of the Holy Cross Mts., Poland, by syndepositional activity of extensional fault blocks. Elevated parts of sea bottom were occupied since Early Oxfordian time by sponge bioherms successively colonized by coral reefs when grown up to the sea level. Micritic sedimentation prevailed in interbioherm denivelations. This micritic succession was replaced by soft-bottom coral buildups constructed by flat coral colonies, typical of a relatively quiet environment of the depths 20–70 m, and finally by coarse bioclastic grainstones and oncolites which are interpreted as talus of the coral reef constructed on tops of former sponge bioherms by branched and hemispherical coral colonies in very dynamic and extremely shallow water conditions.

Authors and Affiliations

Jacek GUTOWSKI

Keywords

coral facies reefs syndepositional activity of extensional blocks

Jurajskie otwornice planktoniczne z pienińskiego pasa skałkowego Polski i ich znaczenie taksonomiczne i filogenetyczne

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EP ID EP67822
DOI -
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