In 1964, low level aeromagnetic surveys at Renison posed challenges not encountered in previous such surveys by the Bureau of Mineral Resources. Magnetic anomalies of hundreds and even thousands of nanotesla were much larger than any previously measured, and none of the topography previously flown was as extreme as that typical of western Tasmania.
Ways of measuring magnetic field developed during the 1930s were considered early in the Second World War as possible means of detecting submerged submarines. In the end they did rather more than that.
Volcanoes that look like volcanoes fascinate. Almost all appear in the catalogue of the Smithsonian Institution Global Volcanism Program, but one at least does not.
In November the Geological Society of London published Volume 60 in its Memoir series, with the title “The Emergence of Geophysics: A Journey into the Twentieth Century”. In his Introduction the author stipulates that he is considering developments as far as the end of the 20th century but will not venture into the 21st.
A book with the title ‘Geologic Life’, and the subtitle ‘Inhuman Intimacies and the Geophysics of Race’ has recently given rise to a considerable amount of comment on LinkedIn. What, on Earth, is it all about?
The Rio Grande Rise Massif and the Valdivia Bank have been interpreted as the two halves of an originally continuous hot-spot-related plateau formed on the Mid Atlantic Ridge. Is Iceland an example of what that plateau might have been like, geologically at least, at the time of its formation?