Please use this identifier to cite or link to this item:
|Scopus||Web of Science®||Altmetric|
|Title:||A middle-late Ediacaran volcano-sedimentary record from the eastern Arabian-Nubian shield|
|Citation:||Terra Nova, 2014; 26(2):120-129|
|David Nettle, Galen P. Halverson, Grant M. Cox, Alan S. Collins, Mark Schmitz, James Gehling, Peter R. Johnson and Khalid Kadi|
|Abstract:||The Ediacaran Jibalah Group comprises volcano-sedimentary successions that filled small fault-bound basins along the NW–SE-trending Najd fault system in the eastern Arabian-Nubian Shield. Like several other Jibalah basins, the Antaq basin contains exquisitely preserved sedimentary structures and felsic tuffs, and hence is an excellent candidate for calibrating late Ediacaran Earth history. Shallow-marine strata from the upper Jibalah Group (Muraykhah Formation) contain a diversity of load structures and intimately related textured organic (microbial) surfaces, along with a fragment of a structure closely resembling an Ediacaran frond fossil and a possible specimen of Aspidella. Interspersed carbonate beds through the Muraykhah Formation record a positive δ13C shift from −6 to 0‰. U-Pb zircon geochronology indicates a maximum depositional age of ~570 Ma for the upper Jibalah Group, consistent with previous age estimates. Although this age overlaps with that of the upper Huqf Supergroup in nearby Oman, these sequences were deposited in contrasting tectonic settings on opposite sides of the final suture of the East African Orogen.|
|Description:||Article first published online: 15 NOV 2013|
|Rights:||© 2013 John Wiley & Sons Ltd|
|Appears in Collections:||Earth and Environmental Sciences publications|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.