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Taken 14-Sep-03
Visitors 29


HRS 2545 Holyhead, South Stack cliffs and intrusion

A micro-gabbro dyke sits in front of the cliffs. BGS: "South Stack Formation - Psammite And Pelite. Metamorphic Bedrock formed approximately 542 to 635 million years ago in the Ediacaran Period. [Pre-Cambrian] Originally sedimentary rocks formed in deep seas. Later altered by low-grade metamorphism"
South Stack lighthouse is clearly visible ion the background.
No EXIF information is available

Categories & Keywords
Category:Scenic
Subcategory:Coastlines
Subcategory Detail:
Keywords:anglesey, cliffs, cymru, dykes, geology, intrusions, lighthouses, pre-cambrian, pyroclastics, rocks, south stack, tehra, tuffs, volcanic, wales

HRS 2545 Holyhead, South Stack cliffs and intrusion