M 6.4, Santiago del Estero, Argentina

[EMSC]

http://earthquake.usgs.gov/images/globes/-30_-65.jpgMonday, May 28, 2012 05:07:23 UTC
Monday, May 28, 2012 02:07:23 AM at epicenter

Depth: 589.30 km (366.17 mi)





More... (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb000a0z0.php)

[Rocky_Shorz]

MADRID (Reuters) - An incensed Spain threatened swift economic retaliation against Argentina on Tuesday after it unveiled plans to seize YPF, the South American nation's biggest oil company which is controlled by Spanish energy group Repsol... (from April)

the depth is too deep to be Fracking related and there are no historic Volcanos in the area...

so it must be a Spanish Gypsy who was holding stock in Repsol that stamped her foot... ;)