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A major geothermal anomaly in the Gulf of California

Naturevolume 257pages2328 (1975) | Download Citation

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Abstract

We have mapped a 3-km wide, high heat flow anomaly with a maximum value of 30 μcalorie cm −2 s−1 within a zone of seafloor extension in the central Gulf of California. From seismic reflection data and thermal modelling we suggest that the anomaly is caused by a 1-km wide basaltic intrusion which is roughly 100 m deep and less than 18,000 yr old.

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Affiliations

  1. University of California, San Diego

    • Lawrence A. Lawver
  2. Marine Physical Laboratory of the Scripps Institution of Oceanography, La Jolla, California, 92037

    • Lawrence A. Lawver
  3. US Geological Survey, Denver, Colorado, 80225

    • David L. Williams
  4. Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, 02543

    • Richard P. Von Herzen

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https://doi.org/10.1038/257023a0

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