E X P L A N A T I O N

M a in S h o c k

2 6 D e c e m b e r 2 0 0 4

A f te r s h o c k s

5 .7 0 - 5 .9 0

5 .9 1 - 6 .4 0

6 .4 1 - 6 .9 0

6 .9 1 - 7 .3 0

P la te B o u n d a r ie s

C on tin e n ta l C on ve rg e n t

C on tin e n ta l R if t

C on tin e n ta l L L Tra n s fo rm

C on tin e n ta l R L T ra n s fo rm

O cean ic C on ve rg e n t

O cean ic R if t

O cean ic R L T ra n s fo rm

S ubdu ct ion

V o lc a n o e s

IndianOcean

AndamanSea

Strait ofMalaca

NicobarIslands

AndamanIslands

Myanmar

Thailand

Indonesia

BurmaPlate

SundaPlate

EurasiaPlate

IndiaPlate

AustraliaPlate

Sunda

Trench

Sumatra

20˚

15˚

10˚

5˚

95˚ 100˚

— Plate Boundary

Aftershocks —

Epicenter of Magnitude 9.0Earthquake. December 26, 2004

India Plate SubductingBeneath Burma Plate —

—