...MICHAEL JOHN RICKARD Abstract T he discovery that the Lackagh Quartzite correlates with the Ards (Errigal) Quartzite (Pitcher & Shackleton 1966) means that the structure in the meta-sediments adjacent to The Main Granite at Dunlewy, as deduced by Rickard (1962) , is incorrect. Revision...

... interpretation. D4 deformation Throughout the Gweebarra Bay area S2, S3 or compo- site S2/3 schistosity is deformed by the regional S4 crenulation cleavage of variable intensity. F4 folds in the Maas-Lettermacaward area: the Maas Syncline and Mulnamin Anticline Pitcher & Berger (1972) regarded the Maas Syncline...

... Canadian Journal of Earth Science 1991 28 136 144 Harris A. L. Pitcher W. S. Harris A. L. Holland C. H. Leake B. E. The Dalradian Supergroup A Correlation of the Precambrian Rocks of the British Isles 1975 6 52 75 Geological Society, London, Special Reports...

... (1967), Cobbing and Pitcher (1972), and Cobbing and Garayar (in press), but neither their stratigraphy nor their exact correlation with the formations of the Andean region was known. Fig. 1 —Cretaceous framework of Peru, with location of East and West Peruvian troughs and Maranon geanticline...

...) syncline in the Fulton Ridge area is thought to have begun before emplacement of the Tetherow basalt and continued thereafter, as discussed in text. NAVD 88—North American Vertical Datum of 1988. Tetherow lava flowed northward from the vent area, attaining as much as 70 m of thickness ( Robinson...

... change to a NNE-SSW orientation (W.S. Pitcher pers. comm. 1995). Fig. 14. The distribution of the early(Neo-Proterozoie) basic tholeiite bodies in Donegal. Devonian granites and late Caledonian faults removed. At alater stage, the lower Carboniferous Donegal Syncline (George & Oswald 1954; Sevastopulo...

... 1973a 26 Cobbing, E. J. 1973 b. Geological map of the Western Cordillera of Northern Peru. D.O.S. (geol), London, map 1187B. Cobbing E. J. Pitcher W. S. The Coastal Batholith of central Peru Jl geol. Soc. Lond 1972a 128 421 60 Cobbing E. J. Pitcher W. S. Plate...

.... Tazieff: Film of the 1971 eruption H. Tazieff: Structural implications of the 1971 eruption G. P. L. Walker, Some recent observations on B.Booth: Mount Etna Ordinary General Meeting 16 February 1972 at 4.30 p.m. The Goastal Batholith of Peru and its tectonic setting W. S. Pitcher & E. J. Cobbing...

.... R. Ir. Acad 1970 B70 105 39 Harris, A. L. & Pitcher, W. S. 1975. The Dalradian Supergroup. In Harris, A. L., et al. (eds) A correlation of Precambrian rocks in the British Isles. Geol. Soc. Lond. Spec. Rept. 6. Harte B. Johnson M.R.W. Metamorphic history...

... may be traced into northwest Ireland as the Lough Foyle or Inishowen Syncline ( Pitcher & Berger, 1972 ; Hutton & Alsop, 1996 , 1997 ). The broadly synformal geometry similar to that described above in the Loch Awe area of Scotland undergoes a ~ 34 km sinistral displacement by the northeast...

... Group and the late Precambrian part of the Dalradian Supergroup (Harris & Pitcher 1975). The Dalradian stratigraphy is disposed about three major F folds: the Tay Nappe, Loch Awe Syncline radaile and Islay Anticline (Fig. 1). The coeval cleavage is usually penetrative, approximately axial planar...

.... l ) , intruded into re- gionally deformed Dalradian metasediments, is well known for the wide variety of emplacement styles exhibited by its 8 component plutons (Pitcher & Ber- ger 1972). Thus in order of intrusion: the Thorr and Fanad granites were emplaced by stoping; Barnesmore by cauldron...

... as they are traced to the southwest (see also Pitcher & Berger I972 ). Fourthly, the present study has shown that the Ardrishaig Phyllites southeast of the Loch Awe Syncline lie in the core of a major fold, termed the Ardrishaig Anticline by Roberts (I 966a), as originally suggested by Bailey (1938). The diffi...

... 1974 85 475 90 Harris A. L. Pitcher W. S. The Dalradian Supergroup Spec Rep Geol Soc Lond 1975 6 52 75 Holdaway M. J. Stability of andalusite and the aluminum silicate phase diagram Am J Sci 1971 271 97 132 Hoschek G. The stability of staurolite...

...W.S. Pitcher Abstract The address is a wide-ranging commentary on the physical aspects of granitic magma and deals especially with the mode of emplacement. Recommendations on the nomenclature of plutons and batholiths involve both a description of the actual shape and their modeling by experimental...

... of the seaboard of Mid-Argyll. Mem. geol. Surv. Scotland. PITCHER, W. S. & BERGER, A. R. I972. The geolo~ of Donegal: a study of granite emplacement and unroofing. Wiley, New York. PRmE, R. A. 1972. The distinction between displacement and distortion in flow and the origin of diachronism in tectonic overprinting...

.... Harris A. L. Holland C. H. Leake B. E. Strain adjacent to the Iapetus Suture in Ireland The Caledonides of the British Isles—reviewed 1979 8 Spec. Publ. geol. Soc. London Pitcher W. S. Berger A. R. The Geology of Donegal: A study of granite emplacement and unroofing 1972...

... part of the Dalradian Supergroup ( Harris & Pitcher 1975 ) are overlain by metamorphosed basaltic lava flows and tuffs and intruded by a suite of comagmatic metabasaltic sills ( Borradaile 1972 ; Wilson & Leake 1972 ) and associated feeder dykes ( Graham & Borradaile 1984 ) with an age...

.... General geology The Dalradian metasediments exposed along the Banff coast (Fig. l a ) are polyphase-deformed Appin, Argyll and Southern Highland Group rocks (Harris & Pitcher 1975). The structure of the coastal section is dominated by the Boyndie Syncline which separates a generally steep belt to the west...

... with that of unstable mixed-mode basins. An incomplete, upright, synclinal sheath fold dominates the structure in the east of the schist belt, and another incomplete synclinal sheath fold occurs in the west, its hinge areas and northeastern limb having been cut out by a steepened thrust (the Sandur valley discontinuity...