Wednesday, December 30, 2009

Jersey Petrology set for March 9, 2009


Jersey Petrology on Stamps

On 9th March 2010, Jersey Post will issue a set of five postage stamps featuring Petrology specimens found in Jersey. The oldest rocks in Jersey are the Shales which are over 700 million years old. However, the best known rocks in the Island are the pink and grey Granites and Diorites. They make up a third of the Island and were formed between 550 and 450 million years ago by molten rock cooling and solidifying deep between the Earth’s surface. The specimens featured may all be seen at the MP Shah Gallery at Jersey La Heritage Hougue Bie Museum, Grouville,
Jersey.


Jersey Post’s Petrology stamps are shown above at proof stage and feature:

37p Brecciated Pegniatite with Orihaclase Feldspar crystals

42p Diorite with incipient orbicular structure

45p Granite

61p Jasper in Andesite

80p Pebbles of Granite, Andesite and Shale in Rozel Conglomerate

technical Details:- Stamps, First Day Cover envelope and Presentation Pack painted by Jennifer Toombs using reference photographs supplied by Guy and Denise Cangelosi. Stamps printed by Cartor Security Printing, France in four color process offset lithography in sheets of ten (2 across x 5 down). Stamp die size 40mm x 30mm. Stamp product designs t Jersey Post Ltd 2010. Set value £2.65.

All items will be available from the Jersey Philatelic Bureau, Postal Headquarters, JERSEY JE lAB,
United Kingdom or the shop at the
Broad Street post office or on Internet at:

www.jerseystamps.com

Olga Finch, Curator of Archaeology at Jersey Heritage, provided Jersey Post with the following observations regarding the petrology of
Jersey.


The oldest rocks in Jersey are the Shales which are over 700 million years old. They were formed by muddy currents flowing down a sloping seabed which deposited layer after layer of fine sand and clay which over time was compressed and cemented into shales.The second generation of rocks are andesites and rhyolites. These were produced by volcanoes as ash-falls and lava flows some 650 to 550 million years ago.The best known rocks in Jersey are the pink and grey granites and diorites. They make up a third of the Island and were formed between 560 and 480 million yearn ago by molten rock cooling and solidifying deep between the Earths surface.The Rozel Conglomerates are the youngest rock formation on the Island, formed around 400 million years ago. The accumulation of pebbles formed when mountain ranges made up by the granite and older rock units were uplifted and eroded. Streams and torrents carried the pebbles and sand down valleys to deposit them on alluvial fans building onto a desert plain.”

For more information onf La Hougue Bie:

http://www.megalithics.com/europe/jersey/bie/biemain.htm

The Jersey Rocks Videos

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