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Brief Report for Newbury liquefaction features (Class A) No. 2651
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citation for this record: Wheeler, R.L., and Tuttle, M.P., compilers, 1998, Fault number 2651, Newbury liquefaction features, in Quaternary fault and fold database of the United States: U.S. Geological Survey website, http://earthquakes.usgs.gov/regional/qfaults, accessed 11/24/2009 06:07 AM.
| Synopsis | The evidence for Quaternary faulting at this locale in northeastern Massachusetts consists of (1) eyewitness reports of liquefaction during an earthquake of MMI VII (moment magnitude M 4.8) in 1727, (2) sand dikes found in trenches and attributed to the 1727 earthquake, and (3) mid- to late Holocene sand dikes and a sand sill that is cut by the 1727 dikes.
These liquefaction features are evidence of strong shaking, but they do not identify the specific fault or faults that caused an earthquake or earthquakes. Because individual Quaternary faults remain unidentified, it is not possible to define and measure specific attributes (azimuth, length, dip, etc.) for the Newbury liquefaction features. |
| County(s) and State(s) | |
| AMS sheet(s) | Boston |
| Physiographic province(s) | |
| Length (km) | 0 km. |
| Average strike | |
| Sense of movement | No data |
| Dip Direction | Unknown |
| Historic earthquake | |
| Most recent prehistoric deformation | Latest Quaternary (<15 ka) |
| Slip-rate category | Insufficient data |
| Date and Compiler(s) | 1998 Russell L. Wheeler, U.S. Geological Survey Martitia P. Tuttle, M. Tuttle and Associates |
