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Record Details

Record 14 of 3015
Tectonics of the Easter plate
External Online Source: doi:10.1016/0012-821X(84)90158-4
Author and Affiliation:
Engeln, J. F.(Northwestern Univ., Evanston, IL, United States)
Stein, S.(Northwestern University, Evanston, IL, United States)
Abstract: A new model for the Easter plate is presented in which rift propagation has resulted in the formation of a rigid plate between the propagating and dying ridges. The distribution of earthquakes, eleven new focal mechanisms, and existing bathymetric and magnetic data are used to describe the tectonics of this area. Both the Easter-Nazca and Easter-Pacific Euler poles are sufficiently close to the Easter plate to cause rapid changes in rates and directions of motion along the boundaries. The east and west boundaries are propagating and dying ridges; the southwest boundary is a slow-spreading ridge and the northern boundary is a complex zone of convergent and transform motion. The Easter plate may reflect the tectonics of rift propagation on a large scale, where rigid plate tectonics requires boundary reorientation. Simple schematic models to illustrate the general features and processes which occur at plates resulting from large-scale rift propagation are used.
Publication Date: May 01, 1984
Document ID:
19840056143
(Acquired Nov 28, 1995)
Accession Number: 84A38930
Subject Category: GEOPHYSICS
Document Type: Journal Article
Publication Information: Earth and Planetary Science Letters; p. 259-270; (ISSN 0012-821X); 68; 2, Ma
Publisher Information: Netherlands
Contract/Grant/Task Num: NSF EAR-80-07363; NSF EAR-82-06381; NAS5-27238
Financial Sponsor: NASA; United States
Organization Source: Northwestern Univ.; Evanston, IL, United States
Description: 12p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: PACIFIC OCEAN; PLATES (TECTONICS); TECTONICS; EARTHQUAKES; GEOLOGICAL FAULTS; MAGNETIC ANOMALIES
Imprint And Other Notes: Earth and Planetary Science Letters (ISSN 0012-821X), vol. 68, no. 2, May 1984, p. 259-270. Research supported by the Petroleum Research Fund.
Miscellaneous Notes: Research supported by the Petroleum Research Fu
Availability Source: Other Sources
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