Hannaborough Quarry
Also within
Condition (Natural England)
Favourable (1)
| Unit | Feature | Condition | Area (ha) | Assessed |
|---|---|---|---|---|
| SS529029 | — | Favourable | 0.71 | 2015-12-04 |
Geology & landscape
Mining / Industrial: Quarry · Geological Period: Permian
Landscape processes: Volcanic / Igneous
Description
Hannaborough Quarry SSSI Description An important exposure of lamprophyric lava belonging to the poorly-exposed Exeter Volcanic Series which outcrops in this locality. The rock is an olivine-biotite phyric minette characterised by potassium enrichment and high levels of strontium, barium and light rare earth elements. The lava is representative of the high-level post-orogenic vulcanicity that occurred in localised graben structures and characterised south-west England during the early Permian.