PLATE CIRCUIT CLOSURE

SOME MOTIONS ARE DERIVED USING DATA FROM OTHER PLATES

THE RATE AT WHICH THE JUAN DE FUCA PLATE SUBDUCTS BENEATH THE NORTH AMERICAN PLATE IS FOUND BY COMBINING:

DIRECTION & RATE OF JUAN DE FUCA-PACIFIC SPREADING AT THE JUAN DE FUCA RIDGE

DIRECTION & RATE OF NORTH AMERICA-PACIFIC MOTION FROM THE GULF OF CALIFORNIA AND SAN ANDREAS (TRANSFORM) FAULT