Department of Natural     Ministere des Ressources 
Resources Canada          Naturelles Canada


                             EARTHQUAKE REPORT

                        GEOLOGICAL SURVEY OF CANADA
                         PACIFIC GEOSCIENCE CENTRE
                               SIDNEY, B.C.
                            Tel (250) 363-6500
                            Fax (250) 363-6565


DATE:     Tuesday, June 24, 1997 (UPDATE 25/06/97)
TIME:     7:40:59 am PDT (14:40 UTC)
MAGNITUDE: 4.6 (revised from 4.5)
LOCATION: Strait of Georgia, BC
          (49.24  N, 123.62 W, depth 4 km)

ADDITIONAL INFORMATION:

This is an UPDATE on yesterday's earthquake. 42 aftershocks were
recorded in the first 24 hours after the earthquake.  All were less than
magnitude 2 and were not felt. Aftershock activity continues.
Aftershocks large enough to be felt may occur in the next few days.

Initial analysis of the seismic data shows that the earthquake occurred
on an east-west oriented fault beneath the Strait of Georgia.  This is
similar to the magnitude 3.4 earthquake on June 13, and a larger
magnitude 4.9 earthquake that occurred near the same location in 1975.
All likely occurred on the same fault.