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Earthquakes are a very destructive and yet unpredictable manifestations of the Earth internal dynamics. They correspond to a rapid motion along geological faults, generating seismic waves as they propagate along the fault strands. The propagation of ruptures along faults induces dramatic stresses and deformation of the rocks hosting the fault, which become increasingly damaged (i.e, degraded) as multiple earthquakes occur along a fault over geological timescales. In turn, this damage of the off-fault rocks has an impact on the dynamic rupture processes: damage generation and earthquake rupture are coupled phenomena. A better knowledge of the dynamic damage processes can thus truly improve our understanding of the physics of earthquakes, and hence help to better predict strong motion and earthquake hazard. More...
Published: Sep 25, 2014 1:29:30 PM
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Vertebrate palaeontology is the study of the fossil record of organisms with a backbone (Chordates). Vertebrate groups range from the first marine fish through the earliest air-breathing amphibians through to fully terrestrial reptiles and mammals.
A detailed examination of ancient vertebrate fossils can give us an insight to patterns of evolution, ecology and ontogeny as well as providing information through isotopic analysis of recent changes in climate.