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Monday, December 24, 2007

A volcano of a different kind

Alan V. Morgan

Strange and catastrophic events take place on our world on a regular and ongoing basis. Most of these are events, especially the larger ones, are “natural phenomena” caused by the shudders and burps of our planet, but sometimes these catastrophes are triggered by human activity.  

Introduction 

The idea of an International Year of Planet Earth (IYPE) was launched in 2000 at an IUGS Council meeting. Proclamation of an International Year was seen as a potentially powerful means of demonstrating how society could benefit from the accumulated knowledge of the solid Earth as part of System Earth.  Support was provided by UNESCO’s Earth Science Division, making it a joint initiative by IUGS and UNESCO.
I trust that most people noticed the spectacular image on the inside cover of this issue of Wat On Earth. I must admit that when I received this photograph together with several others about a year ago from a friend in the United States my initial reaction was … “Well, someone has been busy with Photoshop!” However, a little checking on the web revealed that these are genuine photographs and they tell a very unusual tale of an interesting locality in Mexico. 
Now I (like many of you) have found individual selenite crystals before.
Wednesday, March 1, 2006

Graphite

Graphite is an opaque, non-metallic carbon polymorph that is blackish silver in colour and metallic to dull in sheen. Since it resembles the metal lead, it also known colloquially as black lead or plumbago.

Wednesday, March 1, 2006

Naples and Mt. Vesuvius

Two issues ago I started a brief review about the geologically hazardous position of Naples, Italy, snuggled between the volcanically active area of Campi Flegrei in the west and the Somma-Vesuvius volcanic complex to the east.

One of the surprising things of the "Ice Age" is that about 10,000 to 12,000 years ago, a large embayment of the Atlantic Ocean extended up the St. Lawrence Valley into southern Quebec and eastern Ontario. The seashore extended across from the Lake Ontario basin near Kingston northeastward near Carleton Place to the Ottawa Valley as far as Pembroke. All of Ontario east of that shoreline, including Ottawa, and much of the St. Lawrence Valley of Quebec was flooded by sea water to depths as great as 100m (Fig. 1).

A University of Waterloo Earth Sciences undergraduate student received the Wood Bursary for the second year in a row. This year's winner of the prestigious $6000 award from the Women's Association of the Mining Industry of Canada Foundation is Amy Nicoll (see photo above), who accepted the award at a ceremony in Toronto in October. Michelle Sabourin was the Waterloo recipient in 2004.

Wednesday, March 1, 2006

Jesse's rock

Margaret Ingleton and Peter Russell

Deep under a mountain range I was a part of a great mass of granite. I started my second rock cycle as molten magma, which gradually cooled over millions of years. When the mountains of which I was part of were eroded by wind and rain, my tiny particles became mud and sand. My quartz crystals were ground down and formed sand. This sand was just like the sand you play with on the beach in the summer.