Internal Processes

Synopsis

S260 support video in four bands:
1) Minor Intrustions (15 min): Looks at volcanic activity that occurred during the early stages of the opening of the North Atlantic 60 million years ago. Concentrates on the Ardnamurchan igneous centre, which consists of a series of magma chambers. Demonstrates vent agglomerates, volcanic sills and dykes, gabbro cone sheets and gabbro ring dykes, and explains the relationships between them.
2) Lava Flows (24 min): Vulcanologists Dave Rothery and Hazel Rymer describe, often from first-hand experience, different types of volcanic lava flow sometimes associated with different events within a given eruption cycle.
3) Eruption Styles (23 min): Vulcanologists Dave Rothery and Hazel Rymer describe, often from first-hand experience, different types of volcanic eruptions. Shows phreatic eruption, strombolian eruption, vulcanian eruption, plinian eruption, a pyroclastic flow, and volcanic mudflow (lahar). Aims to aid the understanding of what is going on both during and after an eruption.
4) Structural Geology without Tears (47 min): Discusses geological faults and folds - normal faults, reverse faults (thrusts), and strike-slip faults followed by a duplex, showing examples in Cornwall and in the south of Ireland. Looks at different types of folding as seen in outcrop, examines cleavage and bedding relationships and discusses anticline and syncline. Places in the context of Variscan (or Hercynian) orogeny the faulting and folding of southern Ireland and south-west England.

Series

Geology, Course S260

Language

English

Country

Great Britain

Medium

Video; Videocassette. Standard formats. col. 120 min.

Year of production

1999

Availability

Off-air recording licence; 2000 sale: £120.00 (+VAT +p&p)

Subjects

Geology

Keywords

landforms; ocean floor; volcanoes

Credits

Producer

David Jackson

Production Company

Name

BBC Open University Productions

Distributor

Name

Open University Worldwide

Web

http://www.ouw.co.uk External site opens in new window

Phone

+44 (0) 1908 274066

Address

Walton Hall
Milton Keynes
MK7 6AA

Notes

NB. As of May 2016 Open University Worldwide are no longer distributing DVDs. They have posted this message on their website: ‘Unfortunately Open University Worldwide Limited has decided that product sales are no longer viable given the reduced funding to Higher Education institutions and diminishing demand for the products we have traditionally stocked. At present the Open University Students Association (OUSA) will continue to sell the "Good Study Guide", and we are in discussion with other possible distributors to continue to make The Open University’s products available for purchase. As soon as we have any information on other channels of distribution we will update this notice’. Some products are still available via second hand dealers on Amazon.co.uk