Paleomagnetism of tilted dikes in fast spread oceanic crust exposed in the Hess Deep Rift: implications for spreading and rift propagation

S. D. Hurst, Jeffrey Alan Karson, K. L. Verosub

Research output: Contribution to journalArticle

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Abstract

During Alvin dives, oriented samples from both tilted and vertical dikes were collected from several of the outcrops. These present attitudes of the dikes and their remanent magnetizations indicate that the dikes have been tectonically rotated since their intrusion. Although tectonic rotations such as those observed may have taken place as a result of the opening of the Hess Deep Rift, crosscutting vertical dikes and other geologic considerations suggest that substantial tectonic rotations occurred at or very near the East Pacific Rise axis, probably as a result of intermittent axial collapse. -from Authors

Original languageEnglish (US)
Pages (from-to)789-802
Number of pages14
JournalTectonics
Volume13
Issue number4
StatePublished - 1994
Externally publishedYes

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ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

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