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Showing posts with label Cagayan. Show all posts
Showing posts with label Cagayan. Show all posts

Friday, February 21, 2014

CAGUA VOLCANO IN CAGAYAN


Cagua, one of the active volcanoes in the Philippines, is located in the province of Cagayan. Specifically, it lies in the Cagayan Valley region, of northern Luzon island. Located in the northernmost part of the Sierra Madre mountain range, it lies in a region of active volcanism which probably originates from a fault between Babuyanes and Luzon. Though there is a more evident seismic record between northeast Luzon and the islands, volcanoes occur on the northwestern side of the island. Evidence of a correlation between the two islands includes agglomerates from multiple volcanoes and pebbles of andesitic lava throughout the region. - http://en.wikipedia.org/wiki/Cagua_Volcano



Photo from:  www.phivolcs.dost.gov.ph 
This volcano is 3,717 feet high with a distinct summit crater. An explosive eruption was recorded in 1860. Signs of activity were observed in 1907 but no eruptions took place and the volcano has been quiet since.  - http://wikimapia.org/1901450/Mt-Cagua-Volcano



Photo from:  en.wikipedia.org 


Cagua volcano is located in northern Luzon, Philippines. It is considered part of the Babuya segment because it falls within the N-S trend of the active volcanoes and is east of the trend of the Northern Luzon extinct volcanic centers.
Mt. Cagua is a calcalkaline basaltic and andesitic stratovolcano, which has been built up by at least three eruptive phases:
1) An effusive phase between 1.5 and 1.2 Million years ago.
2) Emission of thick andesitic pyroclastic flows at approximately 670,000 years ago.
3) Young ash flow deposits, deposits, some of which were phreatomagmatic in origin.

- http://www.volcanolive.com/cagua.html


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Friday, February 7, 2014

MT. DIDICAS IN CAGAYAN



Didicas volcano is a small volcanic island 22 km NE of Camiguin Island, 60 km off the northern coast of Luzon, Philippines.


Photo from:  http://flickr.com


Until 1952, it was a submarine volcano that had previously formed temporary islands during eruptions. In the eruption of 1952 the submarine volcano formed a new lava dome that surfaced above sea level and has become now a permanent new island.

 

Background:

Didicas volcano now consists of a small, 244-m-high andesitic lava dome about 1.4 km in its longest diameter.

A 400-m-wide crater was formed during the 1952 eruption. The first recorded submarine eruption of Didicas occurred in 1773. 


Photo from:  http://sciencythoughts.blogspot.com 



In an eruption in 1860, Didicas also built a new island, the first recorded cone of Didicas breaching the sea surface. It reached a height of 213 m in 1860, when the eruption ended, but it was soon eroded beneath the sea, because it mainly consisted of loose tephra. 3 rock masses up to 82 m high were left after an eruption in 1900. 2 more eruptions occurred since 1952 at an explosion crater on the northern side of the island. (Source: GVP volcano information)


- Text above from:  http://www.volcanodiscovery.com



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