Monday, 28 December 2009

Field Geology in Pembrokeshire (Part 1)

There has been a problem with the new Pembrokeshire Part 1’ course arrangement to be run by Lifelong Learning at Cardiff University: some people have enquired to Cardiff about the course, only to be told that there is no such course available! It is available and the organisers in Cardiff need to know the level of interest in the course by the end of January.
People who express an interest will be informed in due course of when to pay the tuition fee (£85.00) to the University.

Contact at Cardiff to send expressions of interest: Dr Zbig Sobiesierski - email
Details - The Pembrokeshire landscape differs from much of Wales in that it is largely unmountainous, with extensive areas forming plateaux lying below 183m (600 ft). The landscape is nonetheless striking, with steep slopes and rocky outcrops a widespread feature; most of the highly attractive coast, designated a National Park, is cliff-lined. The county’s geology ranges in age from late Precambrian times to the end of the Carboniferous period (c. 650 – 300 million years ago), with some localized much younger deposits, including those from the recent Ice Ages. On this course you can learn how this part of the earth’s crust passed northwards from the southern hemisphere, across the equator to its present position; it was compressed, stretched and compressed again during enormous intercontinental plate collision and extension events.
These changes in geographic location and tectonic activity are recorded in the rocks, leaving a legacy of magma intrusions and volcanic eruptions, deep and shallow tropical seas, tropical river plains and swamps. This course will examine a number of key locations, mostly coastal, where these often fossiliferous rocks can be examined. Part 1 focuses on Precambrian, Cambrian and Ordovician rocks located mostly in the north of the county, and is divided into 2 weekends to maximize safe access on tidal beaches. No prior knowledge of geology or the county
will be assumed. A pre-course handout covering details of meeting points, safety, geoconservation and geology will be sent to those enrolled.
Dates: Saturday 12th, Sunday 13th; Saturday 26th, Sunday 27th June 2010.

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