Paleomagnetism of San Cristobal Island, Galapagos
Earth and Planetary Science Letters
By: A. Cox
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Abstract
Isla San Cristobal, the most easterly of the Galapagos Islands, consists of two parts: a large volcano constitutes the southwest half of the island and an irregular apron of small cones and flows makes up the northeast half. As some of the younger flows on the flanks of the large volcano are reversely magnetized, the minimum age of the volcano is 0.7 my, which is the age of the Brunhes-Matuyama reversal boundary. The true age is probably several times greater. The cones and flows to the northeast are all normally magnetized. The between-site angular dispersion of virtual poles is 11.3° - a value consistent with mathematical models for the latitude dependence of geomagnetic secular variation.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Paleomagnetism of San Cristobal Island, Galapagos |
| Series title | Earth and Planetary Science Letters |
| DOI | 10.1016/0012-821X(71)90158-0 |
| Volume | 11 |
| Issue | 1-5 |
| Year Published | 1971 |
| Language | English |
| Publisher | Elsevier |
| Description | 9 p. |
| First page | 152 |
| Last page | 160 |
| Other Geospatial | Galapagos |
| Google Analytic Metrics | Metrics page |