The BGS Lexicon of Named Rock Units — Result Details

Tambowie Lava Member

Computer Code: TBLA Preferred Map Code: notEntered
Status Code: Full
Age range: Arundian Substage (CJ) — Asbian Substage (CR)
Lithological Description: Mainly olivine-microphyric basalts (Dalmeny type) interbedded with mugearites. Distal facies characteristics such as lava toes and thin reddened lavas with interbedded boles are well developed near Edinbarnet [NS 503 745]. The highest flow seen in the Douglas Muir area [NS 525 751] is an olivine-clinopyroxene-plagioclase-macrophyric basalt (Dunsapie type) with an unusual 'cumulate' texture.
Definition of Lower Boundary: The Tambowie Lava Member is underlain by the predominantly plagioclase-macrophyric basalts (Markle type) of the Mugdock Lava Member.
Definition of Upper Boundary: The Tambowie Lava Member is the youngest unit in the Clyde Plateau Volcanic Formation of the Kilpatrick Hills. It is overlain by the sedimentary rocks of the Lawmuir and Kirkwood formations.
Thickness: Maximum 30 m.
Geographical Limits: Only present in the southern part of the Kilpatrick Hills area, from east of Tambowie [NS 525 755] west to Muirhouses [NS 506 754], and north of Cochno [NS 497 745]. They are absent from the north-east around Mugdock [NS 56 77]. They are not present in the south-west where they may be cut out by faulting.
Parent Unit: Clyde Plateau Volcanic Formation (CPV)
Previous Name(s): Tambowie Lavas (-4917)
Alternative Name(s): none recorded or not applicable
Type Area  Olivine-microphyric basalts, mugearites and an olivine-clinopyroxene-plagioclase-macrophyric basalt in the area between Muirhouses and Tambowie, north-west of Milngavie. Hall et al., 1998. 
Hall, I H S, Browne, M A E and Forsyth, I H. 1998. Geology of the Glasgow district. Memoir of the British Geological Survey, Sheet 30E (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used: