What are the geological features of the Philippines?
The Geology of the Philipines is comprised of geologic processes results of very complex geology. The Philippines may be viewed as a collage of metamorphic terranes, magmatic arcs, ophiolitic complexes, sedimentary basins, and a continental block of Eurasian affinity subjected to tectonic processes.
How did the Philippines form geologically?
Geologically speaking, the Philippine archipelago was formed by volcanic eruptions from under the sea and the buckling of the earth’s crust when two tectonic plates collided about 65 million years ago. A number of the archipelago’s islands continued to grow and rose up from the depths of the ocean floor.
Why is the Philippines known to be in an island arc setting?
Subduction of ocean floor along the trenches surrounding the Philippines is a major factor in shaping the geologic history of this island arc system. Collision zones in this island arc system are characterized by the involvement of oceanic bathymetric highs (seamounts, spreading ridge, submerged continental fragment).
What geologic structure of the Philippines accounts for the very high risk earthquake?
Philvocs disclosed that the Central Leyte Fault forming part of the 1,200 kilometers Philippine Fault Zone stretches in some areas of Mahaplag, Ormoc City, Kananga, Capoocan, Javier, MacArthur, La Paz, Abuyog, Burauen, Leyte, and Albuera and where the crossing faults list as earthquake-prone areas the towns of Sogod.
What tectonic setting characterizes the Philippines?
The tectonic setting of the Philippines is unusual in several respects: it is characterized by opposite-facing subduction systems on its east and west sides; the archipelago is cut by a major transform fault, the Philippine Fault; and the arc complex itself is marked by active volcanism, faulting, and high seismic …
What are geologic features?
What is a Geologic Feature? The term can be defined as any physical feature of the earth’s surface – or of the rocks exposed at the surface – that is formed by a geologic process. Note that the same definition can be applied to the features of any planet or moon.
What major tectonic plates are found around the Philippines?
In the plate tectonics framework, the PMB represents a zone of deformation between surrounding major plates, namely: the Philippine Sea, Eurasian (Sunda Block) and Indo-Australian Plates. Only Palawan and Mindoro, the aseismic regions of the Philippines are part of the Eurasian Plate.
What is a tectonic setting?
Tectonic setting refers to the different tectonic conditions present at a particular location on Earth. It describes whether somewhere is near a…
Why is the Philippines prone to geologic hazard?
The Philippines has suffered from an inexhaustible number of deadly typhoons, earthquakes, volcano eruptions and other natural disasters. This is due to its location along the Ring of Fire, or typhoon belt – a large Pacific Ocean region where many of Earth’s volcanic eruptions and earthquakes occur.
What is meant by geological structure?
Geologic structures are usually the result of the powerful tectonic forces that occur within the earth. These forces fold and break rocks, form deep faults, and build mountains. Structural geology is the study of the processes that result in the formation of geologic structures and how these structures affect rocks.
What tectonic plate is Philippines on?
Philippine Sea Plate
The Philippine Sea Plate or the Philippine Plate is a tectonic plate comprising oceanic lithosphere that lies beneath the Philippine Sea, to the east of the Philippines….
| Philippine Sea Plate | |
|---|---|
| Features | Northern Luzon, Philippine Sea, Taiwan |
| 1Relative to the African Plate |
What kind of geology does the Philippines have?
PHILIPPINE GEOLOGY: AN OVERVIEW The boundary between the Philippine Sea Plate and the eastern margin of the Eurasian Plate is a complex system of subduction zones, collision zones and marginal sea basin openings. In between these two plates, an actively deforming zone is created.
What is the geographical setting of the Philippines?
This preview shows page 1 – 2 out of 2 pages. Geographical Setting The Philippines is an archipelago consisting of roughly 7,000 islands residing along the southeast coast of Asia. Put together, this makes up a total land area of about 300,000 kilometers.
How are the islands of the Philippines formed?
The islands of the Philippines were developed through volcanic activity in the sea floor millions of years ago. The above figure shows how the islands have formed over the last 30 million years.
Why are the Philippines located in a converging zone?
The islands of the Philippines are located on a converging zone where the Eurasian plate (west of the Philippines) is subducting under the Philippines Sea Plate (east of the Philippines). Because of the subduction zone, many active faults exist under Luzon Island that affect Manila. There are two opposing subduction systems:…
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