The BGS Lexicon of Named Rock Units — Result Details
Middlefield Conglomerate Formation
| Computer Code: | MFD | Preferred Map Code: | MFD |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Wenlock Epoch (SW) — Wenlock Epoch (SW) | ||
| Lithological Description: | Boulder conglomerate with well rounded quartzite, quartz, jasper, and igneous rock clasts, and sandstone with beds of conglomerate. | ||
| Definition of Lower Boundary: | Unconformable contact of conglomerate on sandstones and siltstone of Logan Formation. | ||
| Definition of Upper Boundary: | Top of highest important conglomerate bed below Plewlands Sandstone. | ||
| Thickness: | 250 m. | ||
| Geographical Limits: | Muirkirk to Strathaven area, Strathclyde region, Central Scotland. | ||
| Parent Unit: | Dungavel Group (DGL) | ||
| Previous Name(s): | Quartzite Conglomerate
(QZT)
Quartzite Conglomerate (QZT) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Partial Type Section | Gorge along Spindle Burn. | ||
| Reference(s): | |||
| Walton, E K, 1965. "In" Craig, G Y, (Editor). The Geology of Scotland: Lower Palaeozoic rocks. Oliver and Boyd, Edinburgh, 161-227. | |||
| Jennings, J S. Not published. The geology of the eastern part of the Lesmahagow Inlier. Ph.D.Thesis, University of Edinburgh, 1961. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S023 | |||