Abstract
The mass presence of orbitolinid tests in fossiliferous limestones is a palaeontological criterion for the establishment of the Urgonian facies in Central Asia. The stratigraphic distribution of the facies encompasses the Barremian and Aptian stages. Typical Urgonian deposits are widespread in Turkmenistan, Iran and Afghanistan. They were formed in large reef systems on the shelf of marginal seas of the northern periphery of Tethys.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
