SEDIMENTARY BASINS and their BASEMENT ROCKS

1. Cretaceous-Paleogene Arc Sequence
2. Pre-Paleogene Ophiolitic Basement

Basement of Cagayan Basin

Mixed Ophiolite and Metamorphic Rocks

Basement of Samar Basin

1. Eocene Limestone
2. Pre-Oligocene Arcs
3. Mixed Ophiolite and Metamorphic Rocks

Basement of Agusan-Davao Basin

1. Eocene Limestone
2. Pre-Oligocene Arcs
3. Mixed Ophiolite and Metamorphic Rocks

Basement of Cotabato Basin

Eocene Zambales Ophiolite

Basement of Ilocos-Central Luzon Basin

Arc Volcanic Sequence of Tuff, Tuffite and Volcanic Conglomerate

Basement of Mindoro Basin

Paleogene Negros-Panay Volcanic Belt
Ophiolitic and Melange Basement

Basement of Iloilo Basin

Deformed Volcaniclastic Basement

Basement of Visayan Basin

Cagayan Basin
Southern Luzon-Bicol Basin
Samar Basin
Agusan-Davao Basin
Cotabato Basin
Ilocos-Central Luzon Basin
Mindoro Basin
Iloilo Basin
Visayan Basin

What are the General Sedimentary Basins in the Philippines?

The basement of Agusan-Davao Basin and the Basement of Cotabato Basin are the same. They only defer in terms of the upper layer since the Cotabato Basin is more exposed.

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How many General Sedimentary Basins are there in the Philippines?

NA

Basement of Southern Luzon-Bicol Basin