Abstract
The Hartshill Formation of Warwickshire in England provides a section through the initial stages of the “Cambrian marine transgression”. The sea encroached an irregular land surface of weathered volcanic and plutonic rocks which was probably fringed by sand dunes. The first transgressive deposits reflect this provenance but later sedimentation can be interpreted as comprising a gradual retreat of the shoreline and an increase in water depth; superimposed on this trend are several short periods of regression. the transgressive coastal deposits contain meandering trails, Planolites and Arenicolites traces rather than the Skolithos and Diplocraterion assemblages found elsewhere in similar facies of Cambrian (Tommotian and younger) age. The episodes of deeper water, sediment-starved deposition correspond approximately to an early “ Cruziana facies” in laminated sands and muds, to a shelly and stromatolitic limestone facies with a Tommotian fauna and finally to monotonous offshore muds bearing the first local trilobite fragments.
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.
