... in ophiolites generally have rounded shapes accompanied commonly by nodular and more rarely dendritic chromite. Here we describe another texture characteristic of ophiolitic chromitite. The analysis of high-resolution X-ray computed tomography images of chromitite from Harold’s Grave in the Shetland ophiolite...

...Brian O’Driscoll; Russell Garwood; James M. D. Day; Roy Wogelius ABSTRACT The ~492 Ma Shetland Ophiolite Complex contains an extensive mantle section, within which numerous podiform chromitite bodies formed during melt percolation in a supra-subduction zone setting. One of the Shetland ophiolite...

...Hazel M. Prichard; Saioa Suárez; Peter C. Fisher; Robert D. Knight; John S. Watson ABSTRACT Highly anomalous platinum-group element (PGE) concentrations in the podiform chromitites at the Cliff and Harold’s Grave localities in the Shetland ophiolite complex have been well documented previously...

...C. P. Brough; H. M. Prichard; C. R. Neary; P. C. Fisher; I. McDonald Abstract The Shetland ophiolite, located to the northeast of the Scottish mainland, contains podiform chromitites. Two of these are known to host extremely anomalous PGE concentrations. The chromitite at Cliff is enriched in Pt...

...Derek Flinn; Richard J. D. Oglethorpe Synopsis The Shetland ophiolite was derived from an intra-continental, ocean-floored basin that opened shortly after 600 Ma on the eastern edge of Laurentia, during the tensional opening of the Iapetus Ocean. The precursor sedimentary and volcanic extensional...

... an outline account of the evolution of the complex. The Shetland Ophiolite Complex occupies the largest part of the islands of Unst and Fetlar, part of the Shetland Islands lying north of Scotland. The complex is composed of two ophiolitic nappes, a lower nappe and an overlying upper nappe represented...

...Derek Flinn Synopsis The Bouguer anomaly gravity map of the islands of Unst and Fetlar in northeast Shetland shows a high amplitude positive gravity anomaly overlying the metagabbro outcrop (average density 3.0 Mg/m 3 ) of the Shetland ophiolite in Unst. The aeromagnetic map of the same area shows...

... to the Shetland Ophiolite Complex suggests instead that these rocks may form part of an extensive ophiolite sliver, obducted during Iapetus Ocean closure in a forearc setting. Supplementary material : Supplementary information, including methods, supplementary figures and tabulated data, is available at https...

... and a metagranite in NE Unst appear to date end-Caledonian retrogressive metamorphism ( Flinn & Oglethorpe 2005 ). Published P – T data from the Shetlands are limited to the metamorphic sole of the ophiolite, and the Yell Sound Division ( Spray 1988 ; Flinn et al. 1991 ; Flinn 1994 ). P – T estimates...