Are impact-generated lower-crustal faults observable?

Alan G. Jones*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Theoretical calculations coupled with present-day knowledge of the dynamic tensile behaviour of rock indicate that the propagating shock wave, and accompanying rarefaction wave, from a large meteoritic impact event may fracture the crust down to the Moho. Diapiric action by trapped upper mantle fluids could lead to annealing of these sub-vertical faults by material of high carbon content. Are these faults observable on the surface using geophysical methods? One possible means proposed is to try to monitor current flowing down them by an appropriate natural-source electromagnetic experiment. An example is discussed for which such current flow may be occurring.

Original languageEnglish
Pages (from-to)248-252
Number of pages5
JournalEarth and Planetary Science Letters
Issue number1-3
Publication statusPublished - 1987
Externally publishedYes


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