Biobío-Aluminé Fault Zone

The Biobío-Aluminé Fault Zone is a northwest-trending geological fault zone in south-central Chile and Argentina. The fault aligns with the middle-upper course of Bío Bío River where fault traces are largely covered with fluvial gravels. The northernmost reaches of the north-south Liquiñe-Ofqui Fault intersect and displace the Biobío-Aluminé Fault Zone.

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