1965•New Zealand Journal of Geology and GeophysicsRequires access

Comments on phase changes and shallow focus Earthquakes

Edward D. Ghent

Abstract

Abstract Expansion or contraction of a volume of rock due to a rapid phase change has been proposed as a mechanism for the generation of earthquakes. This hypothesis, as applied to shallow focus earthquakes, is examined in the light of evidence from natural and experimental petrologic systems. Source volumes calculated for shallow focus earthquakes (focal depth =15 km) are much larger than those calculated for deep focus (focal depth = 700 km) earthquakes. Large source volumes are shown to present several difficulties to the application of this hypothesis to shallow focus earthquakes

About this research paper

What this paper is about

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Geology, Deep-focus earthquake, Depth of focus (tectonics), Seismology, Focus (optics), Focal mechanism, Geophysics, Induced seismicity