Difference between revisions of "Upper Flow Moss Lava Member"

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Upper Flow Moss Lava Member (UFMLA), Dunlop-Eaglesham Block, Carboniferous, Midland Valley of Scotland[edit]

The Upper Flow Moss Lava Member is part of the Clyde Plateau Volcanic Formation.

Name[edit]

Previously known as the Flow Moss lavas (upper). See MacPherson and Phillips (1997)[1]; Phillips and MacPherson (1996)[2]; MacPherson et al. (2000)[3].

Lithology[edit]

The Upper Flow Moss Lava Member consists of alkali basalts and subordinate basanites and ‘ankaramites’.

Stratotype[edit]

The type area is the Dunlop–Eaglesham moors between Glasgow, Kilmarnock and Hamilton, limited to the southern part of the area between Craufurdland Water (NS 510 448) in the north-west and Darvel (NS 6100 3900) in the south-east.

Lower and upper boundaries[edit]

The base is apparently unconformable on the Harelaw Lava Member that consists of trachytic lavas and the volcaniclastic rocks of the Gowk Stane Volcaniclastic Member. A thick bole formed on the top flow of the Lower Flow Moss Lava Member at (NS 510 448) marks the contact with this underlying member.

The member is overlain unconformably by the Kirkwood Formation (Strathclyde Group).

Thickness[edit]

Not stated.

Distribution and regional correlation[edit]

Dunlop–Eaglesham moors between Glasgow, Kilmarnock and Hamilton, limited to the southern part of the area between Craufurdland Water (NS 510 448) in the north-west and Darvel (NS 6100 3900) in the south-east.

Age[edit]

Mid Visean (Arundian to Asbian).

References[edit]

  1. MacPherson, K A T, and Phillips, E R. 1997. The geology of the Clyde Plateau Volcanic Formation of the Kilmarnock district (Sheet 22E), central Scotland. British Geological Survey Technical Report, WA/97/88
  2. Phillips, E R, and Macpherson, K A T. 1996. Petrology, geochemistry and classification of the Clyde Plateau Volcanic Formation, Kilmarnock district (Sheet 22), Midland Valley, Scotland. British Geological Survey Technical Report, WG/96/24
  3. MacPherson, K A T, Smith, R A, and Akhurst, M C. 2000. Geology of the Kilmarnock district. Sheet description of the British Geological Survey, Sheet 22E (Scotland)