Images Dated 3rd June 2005

Earthquake distribution map

Earth's tectonic plates, artwork. The Earth's surface is divided up into several major plates. These are rocky slabs that float and move on the more fluid layer beneath them. Current direction of movement is indicated by red arrows. The boundaries between plates are geologically active areas, and are the sites of the majority of the world's volcanoes and earthquakes. Plate tectonics, the study of the plates, has revealed a huge amount about the Earth. For instance, South America's east coast appears to fit into Africa's west coast because they were once joined, but the plates that hold them are moving apart. Also, where the Indian plate collided with the Eurasian plate, the Himalayas were formed

© GARY HINCKS/SCIENCE PHOTO LIBRARY

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2005 Formula One Testing.
Takuma Sato, BAR Honda 007, Action.
Silverstone, England.
2nd June 2005.
World Copyright: Spinney/LAT Photographic.
Ref:Digital Image Only

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GEOLOGY: K-T boundary - K-T boundary Sussex locality, Wyoming, USA.
The ruler and brush rest on the top of the K-T boundary layer. Below it is a mudstone deposit of the Lance Formation (Cretaceous). Above it is a coal bed of the Tullock Member of the Fort Union Formation (Tertiary). The K-T boundary layer is the gray to white kaolinitic claystone, less than 2 cm thick. On top of it is a darker, laminated layer a few millimeters thick, containing sand grains, many of them showing multiple sets of parallel fractures ("shocked quartz") under the microscope. Iridium can be detected in the claystone layer and in the carbonaceous layer immediately above it.
Francois Gohier

© Francois Gohier / ardea.com