WHERE THE QUAKE COMES FROM.
The greatest depth at which earthquakes are known to originate is about thirty miles. It has also been calculated that a beat sufficient to melt granite might occur at about the same depth.
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https://paperspast.natlib.govt.nz/periodicals/NZGRAP18970501.2.70
Bibliographic details
New Zealand Graphic, Volume XVIII, Issue XVIII, 1 May 1897, Page 555
Word Count
38WHERE THE QUAKE COMES FROM. New Zealand Graphic, Volume XVIII, Issue XVIII, 1 May 1897, Page 555
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Acknowledgements
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