Why is Philippines a host to many active faults?
The Philippine Mobile Belt is compressed on the west by the Eurasian Plate and two arms of the Sunda Plate, and on the east by the Philippine Sea Plate. These tectonic plates have compressed and lifted parts of the Philippines causing extensive faulting, primarily on a north–south axis.
How many active faults are there in the Philippines are the faults evenly distributed throughout the archipelago or do they appear to be grouped in some ways?
There are five active fault lines in the country namely the Western Philippine Fault, the Eastern Philippine Fault, the South of Mindanao Fault, Central Philippine Fault and the Marikina/Valley Fault System.
Are the faults evenly distributed throughout the archipelago?
Additional, smaller faults are distributed throughout the archipelago, such as reverse faults in the Visayas and normal to strike-slip faults in southern Luzon; many of these are capable of generating high magnitude 7 earthquakes, which can (and have been) very damaging to proximal population centers.
Why are many areas in the Philippines prone to liquefaction?
The coastal lowland is dominated by alluvial deposits of very soft clayey and loose sandy soils up to 40 meters deep near the coast, which reduce in thickness toward Santa Mesa and Makati and contribute to high liquefaction susceptibility is in this region.
What is the most active geologically active fault in the Philippines?
Marikina Valley Fault Line
according to PHIVOLCS, it is the most geologically active fault line the Philippines.
How are earthquakes distributed on the map?
Earthquakes are distributed along the fault lines, which means at the edge of tectonic plates. On a map showing tectonic plates, earthquakes will be distributed along the lines on the map. … Earthquakes occur most commonly where the gigantic tectonic plates that form the Earth’s crust meet and rub together.