current Projects



Central Virginia Seismic Zone and Surrounding Region, Mid-Atlantic Coast, U.S.



Project: Paleoliquefaction studies in the (northern) central Virginia seismic zone

Funding: U.S. Nuclear Regulatory Commission

Photo: Mattaponi River, VA



MARIANNA SOURCE AREA, CENTRAL U.S.



Project: Geophysical and Paleoseismological Investigations of the Marianna Earthquake Source in East-Central Arkansas

Funding: National Earthquake Hazard Reduction Program managed by U.S. Geological Survey

Figure: (Top) Ground-penetrating radar profile and (Bottom) trench log of large sand blow and related sand dike.



Recent Projects



Puerto Rico and U.S. Virgin Islands



Project: Review of paleoliquefaction data, evaluation of scenario earthquakes, and estimation of source areas, magnitudes and recurrence of large earthquakes impacting Puerto Rico and the U.S. Virgin Islands (click for report)

Maps: Figure 6, Figure S1, Figure S2, Figure S3, Figure S4, Figure S5
Funding: National Earthquake Hazard Reduction Program managed by U.S. Geological Survey

Photo: Río Grande de Manati, PR



Puerto Rico and Antilles Subduction zones, northeastern caribbean



Project: Learning from Hurricane Irma, differentiating tsunami from hurricane deposits, and re-evaluating possible tsunami deposits on St. Thomas, U.S. Virgin Islands (click for report) Funding: National Earthquake Hazard Reduction Program managed by U.S. Geological Survey

Photo: Coastal pond at Saba Islet



Central Virginia Seismic Zone, Mid-Atlantic Coast U.S.



Project: Earthquake potential of the central Virginia seismic zone (click for report)

Funding: National Earthquake Hazard Reduction Program managed by U.S. Geological Survey

Photo: Rivanna River, VA



Marianna Source Area, Central U.S.



Project: Paleoliquefaction study in the Marianna area southwest of the New Madrid seismic zone (click for report)

Funding: National Earthquake Hazard Reduction Program managed by U.S. Geological Survey

Photo: Large sand blow, Marianna, AR



New Madrid Seismic Zone and Surrounding Region, Central U.S.



Project: Paleoliquefaction studies in moderate seismicity regions with a history of large events (click for report)

Funding: U.S. Nuclear Regulatory Commission

Photo: Aerial view of large sand blows near Blytheville, AR



New Madrid Seismic Zone - Wabash Valley Seismic Zone, Central U.S.



Project: Filling the gap in the paleoearthquake record between the New Madrid and Wabash Valley seismic zones (click for report)

Funding: National Earthquake Hazard Reduction Program managed by U.S. Geological Survey

Photo: Skillet Fork, IL



M. Tuttle & Associates


P.O. Box 345, Georgetown ME 04548 USA
Telephone: (207) 371-2007