Abstract
Summary The carbonate associated with the evaporites is dolomite; magnesite has not so far been found. The following sequence of deposition was accompanied by metasomatism at each stage :— Dolomite→ Anhydrite→ Halite. Evidence of replacement of dolomite by anhydrite includes irregular-sided veins, replaced fossils and pseudo-ooliths, porphyroblastic and poikiloblastic crystals. Evidence of normal primary precipitation is also presented. No pre-anhydrite gypsum has been found; this mineral occurs as porphyroblasts and fibrous veins later than anhydrite. Minor occurrences of fluorite and barite in the evaporites are noted. Carboniferous limestones in the “high” beneath Billingham have been replaced by dolomite and ankerite.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.