(from http://earthquake.usgs.gov)

1. Study: Oklahoma’s daily small quakes raise risk of big one
2. Report: Texas quakes linked to fault extending into Dallas
3. 3.1 magnitude earthquake in Texas Panhandle, near Amarillo
4. Another earthquake felt in Irving this morning
5. USGS likely to upgrade quake risk in North Texas
6. Texas residents rattled by series of small quakes
7. 4 mild earthquakes startle North Texas; no damage reported
8. 3.5-magnitude earthquake felt across DFW metroplex
9. Study links swarm of Texas earthquakes to natural gas drilling
10. Government report: Man-made earthquakes have shaken over a dozen areas in US recently
11. 3.2 earthquake hits near Irving
12. Texas Railroad Commission orders disposal well testing near Thursday’s 4.0 magnitude quake

IRVING, Texas (AP) — The Dallas area has had another minor earthquake.

The US Geological Survey reports a 3.1 magnitude quake happened at 6:18 a.m. CST Friday. The quake was centered 3 miles east-northeast of Irving.

Police in Irving had no immediate reports of damage or anyone hurt in Friday morning’s earthquake.

Seismologists have said that dozens of small quakes rattling North Texas in recent months were concentrated along a narrow 2 mile subsurface fault. Experts from Southern Methodist University weeks ago placed more than 20 monitors around the quake sites and then determined the fault existed.

Officials are still trying to figure out what’s been causing the earthquakes.

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