Lomography

Metasomatic Hornfelses of the Lands End Aureole at Tater-du by Jonathan Polkest

At Tater Dhu in the South of the West Penwith peninsula, Cornwall, occours a small isolated part of the Lands End aereole which has not been described in detail, the aureole rocks at Tater Dhu are mostly banded amphibolithic hornfelses, some of them originally metasomatic. The Metasomatic Hornfelses can be divided into Fe-Mg hornfelses containing anthophyllite, cummingtonite, and cordierite AND secondly, Hornfelses containing diopside, grossularite, epidote minerals, and axinite, AND hornfelses containing a very high proportion of biotite, All three types are considered to have been derived from Hornblende Hornfelses (Greenstone hornfelses) of basic intrusive origin. The above photograph was taken in Newlyn nearby and part of Newlyn is called "Green Rocks", indeed the Greenstone quarried at the Penlee headland since the earliest beginnings of toolmaking cultures in Cornwall and currently under threat from Property Developers intending to build a marina with luxury houses.