Tectonic Hazards

Tectonic discrimination diagrams revisited

[1] The decision boundaries of most tectonic discrimination diagrams are drawn by eye. Discriminant analysis is a statistically more rigorous way to determine the tectonic affinity of oceanic basalts based on their bulk-rock chemistry. This method was applied to a database of 756 oceanic basalts of known tectonic affinity (ocean island, mid-ocean ridge, or island arc). For each of these trainin...

Propagation of tectonic waves

Pre - Plate - Tectonic

Geological models of subduction zones impact thinking about many of the central problems in the structure, dynamics, chemistry, and history of the solid earth. Should those models change, the effects will reach across the earth sciences. We are currently in the midst of such a change, brought on by several causes. First, the earth science community recently began an organized, multi-disciplinar...

Tectonic Uplift and Eastern Africa

www.sciencemag.org (this information is current as of June 5, 2007 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/313/5792/1419 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/313/5792/1419/DC1 can be found ...

Geologic mapping of tectonic planets

Geological analysis of planets typically begins with the construction of a geologic map of the planets' surfaces using remote data sets. Geologic maps provide the basis for interpretations of geologic histories, which in turn provide critical relations for understanding the range of processes that contributed to the evolution. Because geologic mapping should ultimately lead to the discovery of ...