Chlorozoan VS foramol carbonate sedimentary systems in an Upper Jurassic-Cretaceous Pelagonian margin: Rhodiani area (West Macedonia, Greece)

Pomoni-Papaioannou, F; Photiades, A

dc.contributor.author	Pomoni-Papaioannou, F	en
dc.contributor.author	Photiades, A	en
dc.date.accessioned	2014-03-01T01:56:28Z
dc.date.available	2014-03-01T01:56:28Z
dc.date.issued	2007	en
dc.identifier.issn	0037-8763	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28109
dc.subject	Upper Jurassic	en
dc.subject	Upper Cretaceous	en
dc.subject	chlorozoan carbonate system	en
dc.subject	foramol carbonate system	en
dc.subject.classification	Geology	en
dc.subject.other	SHELVES	en
dc.subject.other	EXAMPLES	en
dc.title	Chlorozoan VS foramol carbonate sedimentary systems in an Upper Jurassic-Cretaceous Pelagonian margin: Rhodiani area (West Macedonia, Greece)	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The transition from the Upper Jurassic to Upper Cretaceous carbonate sediments of the Pelagonian margin in the Rhodiani area (West Macedonia, Greece), records a significant carbonate diversification in terms of biota assemblages and related mineralogy, due to significant palaeoenvironmental-palaeoclimatological changes. Calcified green algae, hermatypic corals, echinoderms and non-skeletal components, characterize the Upper Jurassic carbonate sediments. They document a << chlorozoan >> type depositional setting. The carbonate sedimentation was of shallow lagoon to back-reef environment and sediments undergone significant meteoric diagenesis during subaerial exposure episodes. In the studied successions, the rapid evolution from these shallow water domains to Upper Cretaceous slope settings is documented. In these latter, shallow water << foramol >> skeletal debris periodically contributed to the hemipelagic deposition in a clear deepening trend. The related source areas were open shelves with gentle slope margins in which grain-supported rudist-bearing sediments were directly lain-down upon the previously emerged ter-rains. Rudists prevailed, along with large benthic foraminifera in a << foramol-type >> deposit. Due to calcitic composition, skeletal grains were not prone in early diagenetic processes so favoring a coutribution to the deeper areas by significant resedimentation episodes. Coarse skeletal debris was transported periodically off-shelf by means of gravity flows while the biosilt material, largely present in the hemipelagic intervals, presumably accumulated by continuous e downslope sinking of sediment charged waters.	en
heal.publisher	SOCIETA GEOLOGICA ITALIANA	en
heal.journalName	BOLLETTINO DELLA SOCIETA GEOLOGICA ITALIANA	en
dc.identifier.isi	ISI:000248738300003	en
dc.identifier.volume	126	en
dc.identifier.issue	2	en
dc.identifier.spage	173	en
dc.identifier.epage	180	en