What are the faults in the Philippines?
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.
Where are the major faults in the Philippines?
Philippine Fault Zone It extends from Davao Gulf in the south, bisects the Caraga region at the Agusan River basin, crosses to Leyte and Masbate islands, and traverses Quezon province in eastern Luzon before passing through Nueva Ecija up to the Ilocos region in northwest Luzon.
What is the biggest fault in the Philippines?
The “Big One” is a worst-case scenario of an earthquake from the West Valley Fault, a 100-kilometer fault that runs through six cities in Metro Manila and nearby provinces. A tsunami is also foreseen in the scenario set by the Philippine Institute of Volcanology and Seismology (Phivolcs).
What are the five active fault in the Philippines?
There are five active fault lines in the country, these are the Western Philippine Fault, the Eastern Philippine Fault; the South of Mindanao Fault, the Central Philippine Fault, and the most famous one the Marikina Valley Fault or the West Valley Fault.
What type of fault is central Philippine Fault?
Abstract. The central Philippine Fault Zone is found to be the locus of great earthquakes, a transition zone with slow slip and creep activity. This is based on the analysis and correlation of seismic historic data and detailed documentation of recent seismic events in the region.
What type of fault is the Philippine fault system?
left-lateral strike-slip fault
The Philippine fault is a major left-lateral strike-slip fault that runs through the Philippine archipelago (Fig. 1).
What kind of fault is West Valley Fault?
right-lateral strike-slip fault system
The Marikina Valley Fault System, also known as the Valley Fault System (VFS), is a dominantly right-lateral strike-slip fault system in Luzon, Philippines.
What type of fault is the Philippine Fault Zone?
What are the three main faults?
There are three main types of fault which can cause earthquakes: normal, reverse (thrust) and strike-slip.
What are faults and types of faults?
Fault Types. Fault is a fracture or crack where two rock blocks slide past one to another. If this movement may occur rapidly, it can be causes earthquike or slowly, in the form of creep. Types of faults include strike-slip faults, normal faults, reverse faults, thrust faults, and oblique-slip faults.
What type of fault is Southern Mindanao fault?
This 1250-km-long left-lateral strike-slip fault traverses the entire Philippine archipelago from northwestern Luzon Island in the north to eastern Mindanao in the south.
What is the normal fault in the Philippines?
The Philippine fault is a ~1250-km-long, left-lateral strike-slip fault extending NNW parallel to the Philippine archipelago. This fault has been very active in the past 200 years with several destructive earthquakes accompanied by surface rupture.
How do fault lines affect the community?
Loss of life and major injuries are common, as is the very visible loss of buildings, food, and potable water. Loss of infrastructure complicates these matters, and refugee camps and temporary shelter are ripe for health issues, including sanitation and spreading illness.
Is Cavite a fault line?
The Valley Fault System is a dextral strike-slip type fault that traverses primarily in the eastern portion of Metro Manila and other provinces such as Bulacan, Rizal, Cavite, and Laguna that sums up to a total length of 146.71 kilometers.
What is Masbate fault?
The Masbate fault is a transition zone characterized by large and medium earthquakes accompanied by unusually large ground rupture with post-seismic deformation and possi- bly slow-slip components. Recurrence intervals along this zone range from 5 to 10 years.
What type of fault is central Philippine fault?
How do faults affect us?
The friction across the surface of the fault holds the rocks together so they do not slip immediately when pushed sideways. Eventually enough stress builds up and the rocks slip suddenly, releasing energy in waves that travel through the rock to cause the shaking that we feel during an earthquake.
What are the bad effects of faults?
Besides fault scarps, faulting is also responsible for development of Block Mountains like horsts and deep elongated valleys called the grabens and the rift valleys. Faults are also known to cause deflection in the course of streams.
Is there a fault line in Rizal?
The fault line starts at Montalban Landfill of Montalban Rizal and ends at San Lazaro Leisure Park and Casino at Carmona, Cavite. Although, recent studies of PHIVOLCS shows it still extends from Carmona to Silang and to Calamba, Laguna.
Is San Mateo Rizal along fault line?
The EVF is about 10-km long and traverses the municipalities of Rodriguez and San Mateo in Rizal Province. This fault can generate an earthquake with a magnitude of 6.2 that may result to a very destructive ground shaking, with intensity VIII on the PHILVOCS Earthquake Intensity Scale (PEIS), in the epicentral area.