Earthquake(s)

Pre-History

• There are no recorded of events nor few about earthquake before the History was written, but it would be possibly causes by collision of Tectonic Plates and Volcanic Eruptions, resulting to an earthquakes, and forming another Mountains , Volcanoes and even Lakes.

• For example, the Taal Volcano, This is a part of a chain of volcanoes along the island of Luzon, which were formed by two tectonic plates colliding over 500,000 years ago. Since the formation of this large caldera, subsequent eruptions created another volcanic island, within Taal Lake, known as Volcano Island.^[12]

Historical Era

The bell tower of the Manila Cathedral after the series of destructive earthquakes of July 1880.

The ruins of a church after the 2013 earthquake.

The table below is a tally of the ten most deadliest recorded earthquakes in the Philippines since the 1600s with having the most number of casualties:

18th century

• An intensity VII struck Lake Bombon (now known as Taal Lake) on September 24, 1716. It was connected with the eruption of Taal volcano; the constant volcanic activity in the area of Taal caused seismic movements.

• An intensity IX struck Tayabas (now known as Quezon) in 1730. It had ruined the churches and convent in Mauban and several other churches in the province of Tayabas and Laguna.

19th century

• An earthquake on June 3, 1863, destroyed the Manila Cathedral, the Ayuntamiento (City Hall), the Governor's Palace (all three located at the time on Plaza Mayor, now Plaza de Roma) and much of the city. The residence of the Governor-General was moved toMalacañang Palace located about 3 km (1.9 miles) up the Pasig River, while the other two buildings were rebuilt in place.

• An intensity X struck Luzon on July 14–24, 1880.^[13] The quake caused severe damage to these major cities in Luzon, most significantly in Manila where a lot of buildings collapsed. Number of casualties are unknown.^[14]

• A quake struck Lucban, Quezon on October 26, 1884. It destroyed churches in Lucban town in Quezon province and Cavinti town in Laguna province.^[14]

Ten deadliest recorded earthquakes in the Philippines since the 1600s
Magnitude		Origin	Location	Date	Mortality	Missing	Injured	Damages	Source
1	7.9	Tectonic	Moro Gulf	August 16, 1976	4791	2288	9928
2	7.8	Tectonic	Luzon Island	July 16, 1990	1666	1000	More than 3000	₱ 10 billion
3	7.5	Tectonic	Luzon Island	November 30, 1645	More than 600		More than 3000	Unknown
4	7.3	Tectonic	Casiguran, Aurora	August 2, 1968	271		261
5	7.2	Tectonic	Bohol & Cebu	October 15, 2013	222	8	796	₱ 4 billion (est.)	[15]
6	7.1	Tectonic	Mindoro	November 15, 1994	78		430	₱ 5.15 million	[16]
7	6.7	Tectonic	Negros Oriental	February 6, 2012	51	62	112	₱ 383 million
8	8.3	Tectonic	Panay (Lady Caycay)	January 25, 1948	50 (est)			₱ 7 million
9	Unknown	Tectonic	Manila	June 19, 1665	19			Unknown
10	6.5	Tectonic	Laoag	August 17, 1983	16		47
11	7.5	Tectonic	Mindanao Island	March 5, 2002	15		100
12	7.2	Tectonic	magnitude of 7.2 earthquake struck Bohol	October 15, 2013	85			--->