Tectonic pattern of South America inferred from tidal gravity anomalies

Details Tectonic pattern of South America inferred from tidal gravity anomalies Tectonic pattern of South America inferred from tidal gravity anomalies

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pepi..114...91m&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 114, Issue 1-2, p. 91-98.

Physics

1

Scientific paper

The knowledge of several physical parameters that characterize a tectonic unit is important to evaluate its dynamic evolution and, therefore, its role in the continental evolution. Several methodologies have been used to measure the elastic properties of tectonic units using: seismic waves, the level of coherence between the wavelength pattern of the topography and gravity fields, borehole deformation rate, mineral fabric, etc. In this study, the Earth's dynamic elastic response to gravity tides is applied for measuring the lithosphere effective elastic thickness. This methodology proved to be a good alternative to the conventional coherence method. It was applied over the continent, taking into account the poor gravity coverage in South America and the restricted area of some tectonic units. Results are presented as lateral distribution of the effective elastic thickness in South America.

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