Abstract

This issue of the Journal of Geophysical Research contains the collected results of the initial studies of a 3‐km vertical section of Icelandic crust. The material described in these papers was largely presented at a meeting of the investigators working in this project held in Reykjavík, Iceland, from May 13 to May 15, 1980Iceland presents a very well exposed example of crust formed at an accretional plate margin, the crest of the Mid‐Atlantic Ridge. The desirability of a detailed study of a long vertical section of Icelandic crust by deep drilling has been expressed in proposals and recommendations of scientists and international scientific committees since the early 1960's. A formal proposal with descriptions of several alternative drill sites was presented in 1975 [Working Group on Deep Crustal Drilling in Iceland, 1975], but difficulties in financing a drill hole that would penetrate into crustal layer 3 (Vp = 6.5 km/s) delayed implementation of the recommendations.

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