Palaeocurrents and sedimentary facies of the Dalradian metasediments of the Craignish—Kilmelfort district

Sedimentary affiliations and stratigraphic correlation of the Dalradian rocks in the South-west Highlands of Scotland

“…The quartz-phylUtes, found in both the ' unwashed' and the ' clean-washed ' associations are schistose siltstones intermediate in grain-size between the flaggy quartzites and the more pelitic phyllites. The latter show lithological differences which reflect local changes in sedimentation as suggested by Knill (1959).…”

“…Thus the Craignish Phyllites consist of rocks belonging to the graded quartzite affiliation (cf. Knill 1959).…”

“…However, as the term ' sedimentary association ' is then no longer satisfactory, it is suggested that such genetic associations be called ' sedimentary affiliations '. It is to be expected that the rocks belonging to several sedimentary associations, as defined by Knill (1959), will form a single Table 1 for the lettering of stratigraphic units. sedimentary affiliation, and will represent facies variations within this affiliation, dependent on the material available for deposition and the actual mode of deposition.…”

“…It is clear that the psammites of this affiliation, like those of the graded quartzite affiliation, are turbidites. Knill (1959) describes four sedimentary associations from the Craignish PhyUites. One of these, his association of dark slates and limestones, is equivalent to part of the black slate affiliation described above.…”

Cross-bedding in the Calciferous Sandstone Series of Fife and West Lothian

“…Sorby (1859), Gilligan (1920), Stephens (1952) and Walker (1955), all examined Millstone Grit sandstones in Yorkshire and Derbyshire, and Sorby (1853) referred briefly to cross-bedding in the Edinburgh area. Schwarzacher (1953) studied Cretaceous sandstones in central England, and more recent work includes that of Robson (1956) on the Fell Sandstones and Knill (1959) on Dalradian meta-sediments.…”