Mt. Isarog, Philippines

Volcano Type: Stratovolcano
Volcano Status: Fumarolic
Last Known Eruption: Unknown
Summit Elevation: 1966 m    6,450 feet
Latitude: 13.658°N   13°39’30″N
Longitude: 123.38°E   123°23’0″E

Mount Isarog is a potentially active stratovolcano located in the province of Camarines Sur, Island of Luzon, Philippines

The broad isthmus between Lagonoy Gulf and San Miguel Bay in SE Luzon is occupied by the isolated Mount Isarog volcano. The 1966-m-high andesitic stratovolcano is truncated by a 2.5-km-wide crater that is breached to the east along a narrow valley drained by the Quinarag River. The age of the most recent eruptions from Isarog are not known, but solfataric areas occur within the Maalsom vent, which displays gas seepages, warm springs, and steaming vents.

Mt. Isarog

Mt. Isarog

On the 8th of November, 1915, frequent earthquakes were felt on and around Isarog volcano, with some occasional noises. Landslides occurred the slopes of the volcano. The seismic unrest repeated itself two or three times at long intervals until the 10th of January, 1916. The volcano was thickly wooded, even inside of the crater, and nobody observed any fumaroles.

Mt. Isarog Crater

Mt. Isarog Crater

Summit of Mt. Isarog

Summit of Mt. Isarog

Waterfalls in Mt. Isarog

Waterfalls in Mt. Isarog

Mt. Isarog Springs (Christian Lim)

Mt. Isarog Springs (Christian Lim)

Originally posted 2010-08-02 04:19:25.

Mt. Natib, Philippines

Volcano Type: Stratovolcano
Volcano Status: Holocene
Last Known Eruption: Unknown
Summit Elevation: 1253 m    4,111 feet
Latitude: 14.72°N    14°43’0″N
Longitude: 120.40°E    120°24’0″E  

The massive stratovolcano of Mount Natib, at the northern end of the Bataan Peninsula, is truncated by a 6 x 7 km caldera. The latest dated eruptive products are 69,000 +/- 27,000 years old (Ebasco Services 1977), but sampling is not in sufficient detail to determine the date of the latest eruptions. Ruaya and Panem (1991) listed the age of the dominantly andesitic volcano as late Pliocene to Pleistocene, but gave a probable age of the latest activity as Holocene to upper Pleistocene. Five thermal areas are present in the summit region. 

Mt. Natib (John Arce)

Mt. Natib (John Arce)

Mt. Natib (John Arce)

Mt. Natib (John Arce)

View from peak of Mt. Natib (Wilbert Chua)

View from peak of Mt. Natib (Wilbert Chua)

Mt. Natib

Mt. Natib

Location of Orani in Bataan, Philippines

Location of Orani in Bataan, Philippines

Originally posted 2010-07-30 04:09:58.

Mt. Didicas, Philippines

Volcano Type: Compound volcano
Volcano Status: Historical
Last Known Eruption: 1978
Summit Elevation: 228 m   748 feet
Latitude: 19.077°N    19°4’36″N
Longitude: 122.202°E   122°12’6″E

Didicas volcano, 22 km NE of Camiguin Island, was a submarine volcano prior to 1952, when a permanent island was formed. Didicas now consists of a small, 244-m-high andesitic lava dome about 1.4 km in longest exposed dimension. A 400-m-wide crater was formed during the 1952 eruption. The first recorded submarine eruption of Didicas was in 1773. The first recorded subaerial cone reached a height of 213 m in 1860, after a four-year-long eruption, but soon was eroded beneath the sea. Three rock masses up to 82 m high were left after an eruption in 1900. Two eruptions have occurred since 1952 at an explosion crater on the northern side of the island.

Mt. Didicas Eruption

Three people who were fishing near the volcano drowned in March 1969 from a volcanic tsunami caused by an eruption of the volcano. Eruptions were located in the northern part of island.

Originally posted 2010-08-06 03:54:23.

North Gorda Ridge, North Eastern Pacific Ocean

Volcano Type:      Submarine volcano
Volcano Status:    Historical
Last Known Eruption:     1996
Summit Elevation:     -3000 m     - 9,842 feet
Latitude:     42.67°N     42°40’0″N
Longitude:     126.78°W     126°47’0″W

The northernmost of five segments of the Gorda Ridge lies immediately south of the Blanco Transform Fault that offsets the Gorda and Juan de Fuca oceanic spreading ridges. The 65-km-long North Gorda Ridge segment is located about 200 km west of the southern Oregon coast and has deep 5- 10-km-wide valleys at either ends with a shallower narrow axial valley at the center. This morphology, which in plan view resembles an hourglass, is typical of magmatically active spreading segments. A submarine lava flow was erupted in late February and early March 1996, near the center of the North Gorda Ridge segment. The eruption was initially detected through acoustic T-waves from a seismic swarm and the emission of large thermal plumes. In April submarine cameras revealed new lava flows about 100-200 m wide along a fissure that was at least 3.5 km long. A seismic swarm of uncertain origin also occurred at this location in January 1998.

Click Here For The Rest Of North Gorda Ridge, North Eastern Pacific Ocean

Originally posted 2010-09-01 04:40:38.