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Characterization of the structure and tectonic of South AmericaGeologic studies of the South American plate were undertaken. The Guayana shield is reasonably well studied, and although data are sparce, the central Brazilian shield appears similar. Both the Amazon and Parnaiba basins seem to be related to an aulocogen structure. The collection of crustal structure information and the generation of measurement of surface wave dispersion in the shield areascontinues. Long period seismograms are digitized and analyzed. Exisiting crusted and upper mantle studies were indexed. Both MAGSAT scaler and vector magnetic anomaly data were used with regional gravity anomaly data to investigate the regional tectonic features of the South American plate.
Document ID
19820015695
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Keller, G. R. (Texas Univ. El Paso, TX, United States)
Lidiak, E. G. (Texas Univ. El Paso, TX, United States)
Date Acquired
September 4, 2013
Publication Date
June 30, 1981
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NAS 1.26:168623
E82-10196
NASA-CR-168623
Accession Number
82N23569
Funding Number(s)
CONTRACT_GRANT: NAS5-26326
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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