Geologic History

Geologic History

Plate Tectonic Theory

Philippines is the product of the continental drift of the Philippine sea plate

Collision of the Eurasian Plate (where the Asian lands once lay) and the Philippine Sea Plate with the Pacific Plate and the Indian-Australian created the current low and high lands, islands and seas in the Philippines

Tectonic Plates- massive, irregular shaped of solid rocks, composed of both continental of oceanic lithosphere

Major type

Divergent Plates- plates move apart from one another

Convergent Plates- plates move towards one another

Transformed Plates- plates slide past one another

Pleistocene ( 2million BC)

Distinct geological features and water forms has an array of land.

Evidences of these were the Sierra Madre Range and Zambales Range

Development of many unique species of plants and animals as a result of its long-standing isolation from other land masses.

100-65 million B.C.

Proto Philippines : island areas of Bicol, Leyte, Eastern Mindanao

: served as the first islands that shape the country

55-35 million B.C.

Upward direction of the Sierra Madre Range and the Zambales range

During this movement, 3 major island groups emerged. Luzon which covered Luzon up to Samar, Eastern and Central Mindanao and Zamboanga and Western Mindanao

Some Volcanic activities and earthquakes creating trenches(deepest part of the ocean) : Bicol, Leyte

Other volcanoes formed: Batanes, Southern Tagalog, Panay-Negros, Zamboanga and Sulu

Faults were created : there were constant quakes that started in Mindanao that ran through Leyte, Masbate and Quezon until it halted at Cordillera

The formation of rivers and valleys in Marikina and Central Luzon were assumed to be the result of the convergent plate boundaries

South China Sea widen because of the aperture(opening) In between the Eurasian plate and the Micro continental block

Collision of the micro continental block of Palawan and Mindoro into...