... Pebbly Psammite Formations (hitherto included within the Glenshirra Subgroup at the base of the Neoproterozoic Grampian Group) represent a continuum of alluvial fan to shallow water sediments, deposited in a SE thinning fan-delta clastic wedge. These sediments, derived from an uplifted granitoid...

...Fig. 4. Concordia plans for the Glenshirra Group samples: ( a ) ID-TIMS data for sample LTF99-1; ( b ) LA-MC-ICP-MS data for sample LTF99-1; ( c ) ID-TIMS data for sample LTF99-13 – the boxed area is shown in greater detail in (d); ( d ) detail of ID-TIMS data between 1450 and 1500 Ma; ( e ) LA...

... correlation of the Iona Group with the Colonsay Group and the Glenshirra Subgroup of the Dalradian Grampian Group, although correlation with parts of the Torridonian cannot be excluded. Supplementary material: Full analytical results areavailable at http://www.geolsoc.org.uk/SUP18768 . * (e...

.... The possibility that the Grampian Group was unconformable on the structurally underly-ing Central Highland Division and Glenshirra Succession is currently unresolved. 16 2 1988 18 7 1988 © Geological Society of London 1989 1989 Geological Society of London Geological Society of London...

...://www.lyellcollection.org/topic/collections/the-caledonian-wilson-cycle In summary, the Glenshirra–Grampian–Appin groups are devoid of the typical lithological features that characterize the infill of continental rift basins. By contrast, starting with the early Cryogenian Argyll Group, it and the overlying units...

...). Grampian Group Glenshirra Subgroup. The Glenshirra Subgroup forms the oldest exposed strata of the Grampian Group. It comprises a distinctive association of pink and grey mainly arkosic psammite with quartzite and minor semipelite which crops out in a number of structural inliers in the Foyers district...

... et al. 1981, 1983) are currently considered to be part of the Grampian Group on structural and stratigraphic grounds and occur within the Cor- rieyairack Subgroup. Glover & Winchester (1989, page 85, para. 4) ignore the Glenshirra Succession (Haselock et al. 1982). However, in Strathnairn, northeast...

.... & WINCHESTER , J.A. 2004 . Sedimentology and stratigraphic affinities of Neoproterozoic coarse clastic successions, Glenshirra Group, Inverness-shire, Scotland . Scottish Journal of Geology , 40 , 159 – 174 . COLLINSON , J.D. & THOMPSON , D.B. 1988 . Sedimentary Structures...

... of the Corrieyairack sequence, it is evident that the Glenshirra Sub- group represents an early development of the Grampian rift basin, with a fill at least 2 km thick, and again an east-facing half-graben geometry can be inferred. What then is the likely relationship of the multiple Grampian rift sequence...

...Fig. 6. Representative sandstones of the (meta)sedimentary units south of the Great Glen Fault that are dominated by 1.8–1.6 Ga detrital zircons: ( a ) Loch Laggan Formation (Grampian Group), Loch Laggan; ( b , c ) Glenshirra Group, Loch Tarff; ( d ) Dun Gallain Formation (upper Colonsay Group...

... outline with the southern and eastern sides sub‐parallel to the strike of the host rocks and the broad trend of outcrop of the Glenshirra and Corrieyairack sub‐groups of the Grampian Group. These trends are respectively NNW–SSE and east–west, sharply discordant to the NE–SW regional Caledonian strike...

... and Glen Roy, and an eastern domain extending from the Steep Belt towards Drumochter. The Kinlochlaggan succession separates the two domains north of the River Spey whereas the Inverpattack Markie Fault forms the boundary further south (Fig. 2). The western Grampian Group is divided into the Glenshirra...

... lithofacies of the Glenshirra Subgroup. It was collected upstream of Garva Bridge at NN 5236 9512. The Glenshirra psammites are lithologically and geochemically distinct from the rest of the Grampian Group, as they formed in shallow marine conditions subject to subaerial erosion, fluviatile deposition and red...

... asigned to the Glenshirra Subgroup (Haselock 1982). The structurally and stratigraphically overlying Appin Group has been subdivided into (Harris & Pitcher 1975): (a) the Lochaber Subgroup, a sequence of pelitic to semipelitic schists with thin quartzites towards its base; and (b) the overlying...

... (Haselock et al . 1982; Phillips et al. 1994). The underlying strata, the Glenshirra Succession have previously been included in the Grampian Group (Haselock & Evans 1990; Glover & Winchester 1990). However, in view of the structural break that exists between the two successions in the study area we...

... shallow marine Glen Spean Subgroup ( Banks et al . 2007 ; Fig. 8 ). Some workers also include the Glenshirra Group as the lowermost unit of the Grampian Group ( Robertson & Smith 1999 ; Smith et al . 1999 ; Cawood et al . 2003 ; Fig. 8 ). Basin analysis suggests that the Grampian Group...