Unified model for intraplate earthquakes - Intraplate Earthquakes - page 285

Table 11.1 Rotation of local S Hmax

Stress rotation
angle (°)( + cw)

Lateral extent
km × km

Location Seismic zone References

Central-Western France Mazarbaud et al .( 2005 )

N. Armorican Massif 39 50-100

S. Armorican Massif 5 * 120 × 350

E. Massif Central 2 4 * 200 × 250

Charente 17 50-100

Southeastern France Baroux et al .( 2001 )

Rhone Valley − 8 * 110 × 230

Moyenne Durance FZ 0 70 × 210

Digne Nappe reverse
faulting domain

62 50 × 90

Digne Nappe normal
faulting domain

3 8 * 30 × 70

SE of Argentera Massif − 3 * 80 × 120

Ligurian basin − 43 50 × 200

Eastern North America Mazzotti and Townend ( 2010 )

Lower St. Lawrence 44 100 × 300

Charlevoix NW 1 20 × 40

Charlevoix SE 47 20 × 40

Gatineau − 5 150 × 200

Ottawa − 8 100 × 450

Montreal 14 100 × 150

N. Appalacian 32 150 × 400

C. Virginia 48 80 × 150

E. Tennessee − 4 100 × 250

NMSZ 6 100 × 300

Northeastern Canada Steffen et al .( 2012 )

− 45 300 × 600 Hudson Bay

Japan Kawanishi et al . ( 2009 )

Southwest Japan 20 35 × 250

Brazil Zoback and Richardson ( 1996 )

Amazonas (rift pillow) − 75 150 wide

United States Grana and Richarson (1996)

NMSZ (rift pillow) 10-30 80 wide

India Mandal ( 2013 )

Kutch (rift pillow) 50 10s

NMSZ Horton et al .( 2005 )

Bardwell, Kentucky 40 60

* Relative to direction of S Hmax in local extensional stress regime.