To create the map, the researchers amassed over 2,000 stress orientations taken across North America, of which 300 are brand new. These measurements were taken from boreholes—long, narrow shafts ...

Scientists have compiled the most comprehensive map yet of tectonic stress magnitudes across North America, highlighting regions most vulnerable to earthquakes. The map and associated study, published ...

Object Details Author Jacobs, Frank Kessler, Fritz Howells, Tom McCorquodale, Duncan Notes Editors from colophon. Contents Introduction -- America: the future of mapping since 1507 / Frank Jacobs -- ...