| P number: | P002598 |
|---|---|
| Old photograph number: | D00103 |
| Caption: | Dumgoyne, 4.0 km. north-west of Strathblane, Stirlingshire. |
| Description: | Dumgoyne, 4.0 km. north-west of Strathblane, Stirlingshire. Volcanic vent of Lower Carboniferous age which intrudes strata of the Kinnesswood and Ballagan formations. The vent is filled with basalt and agglomerate. The basalt is of Jedburgh type, with microphenocrysts (<2 mm.) of labradorite feldspar and olivine. Augite (a pyroxene) is restricted to the groundmass. The Midland Valley of Scotland was quite active volcanically during the early Carboniferous period, with huge volumes of basalt lava erupted, especially in the western part of the Midland Valley. Numerous contemporary basic and intermediate intrusions such as dykes, sills and plugs pierce the older sedimentary rocks. |
| Date taken: | Thu Jan 01 00:00:00 GMT 1959 |
| Photographer: | Fisher, W.D. |
| Copyright statement: | Crown |
| Acknowledgment: | This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network |
| X longitude/easting: | 252500 |
| Y latitude/northing: | 683500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 120.13 KB; 1000 x 756 pixels; 85 x 64 mm (print at 300 DPI); 265 x 200 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Igneous features/ Volcanic vents, necks and plugs |
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