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Evolution of Sinabung volcano's lava extrusion lobe (VSI)
Thursday, Apr 10, 2014
Activity continues at the volcano in form of slow lava extrusion that feeds the thick lobe formed on the southern flank. Overall, the intensity of this activity continued to decrease. Authorities decreased the alert status from the highest (4) to 3 (on a scale of 1-4). ... [more]
Sinabung volcano this morning (VSI webcam)
Sunday, Mar 30, 2014
Gunung berapi tetap aktif pada tren menurun perlahan-lahan, dengan sedikit variasi selama minggu. Lobus lava kental tetap lemah alimented dan terus tumbuh sangat lambat. ... [more]
  • Sumatra volcano news page

Volcanoes of Sumatra (Indonesia)

Major active volcanoes of Sumatra. (Basemap created using UNAVCO map tool featuring Face of the Earth).
Major active volcanoes of Sumatra.

Pulau Weh
(stratovolcano)
[lebih]

Seulawah Agam
(stratovolcano)
Seulawah Agam is an active stratovolcano at the northwestern tip of Sumatra. It was built within the older lam Teuba caldera. It has a 400 m wide forested summit crater and a crater at 650 m on the NNE flank, the Van Heutsz crater, which has active fumaroles. The last activity of... [lebih]

Gunung Puet Sague
(kompleks Gunung)
Peuet Sague is a large volcanic complex that rises to 2801 m in NW Sumatra. [lebih]

Gunung Geureudong
(stratovolcano)
The massive Bur ni Geureudong volcanic complex, one of the largest in northern Sumatra, consists of the two adjacent volcanoes of Bur ni Geureudong and Bur ni Telong. [lebih]

Kembar
(stratovolcano)
The Gayolesten fumarole field is located on the flanks of the Pleistocene Gunung Kembar volcano. [lebih]

Sibayak
(stratovolcano)
Sibayak and Pinto are twin volcanoes within a compound caldera open to the north. [lebih]

Sinabung
(stratovolcano)
Sinabung is a typical stratovolcano in northern Sumatra next to the town of Berastagi. [lebih]

Toba
(kaldera)
Toba volcano has produced the largest known volcanic eruption on earth during the past 2 million years. [lebih]

Imun
(kubah lava)
Imun is a single small dacitic and/or rhyolitic cone south of Lake Toba with a youthful, undissected morphology, and is considered to be of late-Pleistocene or Holocene age (Aldiss et al., 1983). Source: Smithsonian GVP [lebih]

Helatoba-Tarutung, Tapanuli Utara
(fumarolic field)
Helatoba-Tarutung, located in northern Sumatra south of Lake Toba, is a group of sulfurous hot springs along a 40-km-long, NNW-SSE-trending stretch of the Renun-Toru fault zone. [lebih]

Gunung Sibualbuali
(stratovolcano)
Sibualbuali is an eroded Pleistocene stratovolcano with two solfatara fields on the eastern flank. [lebih]

Gunung Lubukraya
(stratovolcano, lava dome)
Lubukraya is a well-defined andesitic stratovolcano of latest Pleistocene to possibly Holocene age with a broad crater breached to the south and a prominent lava dome at the southern foot of the volcano (Aspden et al. 1982). [lebih]

Gunung Sorik Marapi
(stratovolcano)
Sorikmarapi is a forested stratovolcano with a 600-m-wide summit crater containing a crater lake and substantial sulfur deposits. [lebih]

Sarik-Gajah
(piroklastik kerucut)
The Sarik volcanic andesitic/basaltic center consists of two young cones with vegetated, but uneroded surfaces. [lebih]

Talamau
(stratovolcano)
Talakmau (also known as Talamau) is a massive compound volcano rising above the western coastal plain of Sumatra. [lebih]

Marapi
(stratovolcano)
Gunung Marapi (not to be confused with the better-known Merapi volcano on Java) is Sumatra's most active volcano. [lebih]

Tandikat
(stratovolcano)
Tandikat and its twin volcano to the NNE, Singgalang, lie across the Bukittinggi plain from Marapi volcano. [lebih]

Talang
(stratovolcano)
Talang, which forms a twin volcano with the extinct Pasar Arbaa volcano, has two crater lakes on its flanks. [lebih]

Kerinci
(stratovolcano)
The 3800-m-high Gunung Kerinci in central Sumatra is oIndonesia's highest volcano and one of the most active in Sumatra. [lebih]

Gunung Hutapanjang
(Stratovolcano, kaldera)
Huatapanjang stratovolcano, located to the NW of Sumbing volcano, is classified as active by Rock et al. (1982) and Posavec et al. (1973), with no additional information. Little is known of this central Sumatran volcano. It is not sure if the 2009 6.8 R earthquake was connected t... [lebih]

Sumbing
(stratovolcano)
Smaller than its prominent namesake on Java, Sumatra's Sumbing volcano has a complicated summit region containing several crater remnants and a 180-m-long crater lake. [lebih]

Sekincau-Beriti
(stratovolcano)
The compound Belerang-Beriti volcano rises above the Semalako Plain in SW Sumatra, forming a NW-SE-trending massif that contains a 1.2-km-wide crater breached to the NE. [lebih]

Pendan
(stratovolcano)
Pendan is a little-known volcano in central Sumatra that is listed as an active volcanic center by Rock et al. (1982) and Posavec et al. (1973), with no additional information. Source: Smithsonian GVP [lebih]

Bukit Daun
(stratovolcano)
Located in a sparsely populated region of Sumatra, Bukit Daun forms a twin volcano with Gedang volcano. [lebih]

Kaba
(stratovolcano)
Kaba, a twin volcano with Mount Hitam, has an elongated summit crater complex dominated by three large historically active craters trending ENE from the summit to the upper NE flank. [lebih]

Dempo
(stratovolcano)
Dempo is a prominent 3173-m-high stratovolcano that rises above the Pasumah Plain of SE Sumatra. [lebih]

Bukit Lumut Balai
(stratovolcano)
Bukit Lumut Balai is a heavily eroded volcano consisting of three eruption centers, two on Bukit Lumut and one on the NE side of Bukit Balai, 5 km to the east. Large lava flows occur on the north side of Bukit Balai. [lebih]

Patah
(stratovolcano)
Patah is a heavily forested, dissected Quaternary volcano SE of Dempo volcano. [lebih]

Besar
(stratovolcano)
Gunung Besar is a 1899-m-high volcano in SE Sumatra with a minor sulfur deposit in its crater. [lebih]

Gunung Semuning (Ranau kaldera)
(Stratovolcano, kaldera)
Ranau is an 8 x 13 km caldera partially filled by the crescent-shaped Lake Ranau. [lebih]

Gunung Sekincau
(stratovolcano)
Sekincau volcano was constructed near the southern rim of the small NW-SE-trending double Belirang and Balak calderas, 2 and 2.5 km wide, respectively. [lebih]

Suoh
(Maar)
The 8 x 16 km Suoh depression appears to be primarily of tectonic origin, but contains historically active maars and silicic lava domes along its margins. [lebih]

Hulubelu
(stratovolcano)
Hulubelu is an elliptical, 4-km-long caldera or volcano-tectonic depression in SE Sumatra. [lebih]

Rajabasa
(stratovolcano)
Rajabasa is a prominent, isolated volcano along the Sunda Strait at the SE-most tip of Sumatra. [lebih]

Volcanism in Sumatra

Sumatra's volcananism is caused by the northeastward subduction of the oceanic Indian-Australian plate at speeds of up to 70 mm/year under the continental Sunda plate (part of the Eurasian plate).
The region is tectonically among the most active on earth, as the great 9.0 (or perhaps even 9.3) magnitude earthquake on Dec. 26, 2004, has sadly illustrated.
The most active volcanoes of Sumatra are Marapi and Karinci, followed by Talang and Kawa volcanoes.


Simplified tectonic map of the Indian Ocean and Sumatra, movements of tectonic plates, the Sunda Trench, location of the great 2004 earthquake, and volcanoes in Sumatra. (USGS)
Simplified tectonic map of the Indian Ocean and Sumatra, movements of tectonic plates, the Sunda Trench, location of the great 2004 earthquake, and volcanoes in Sumatra. (USGS)

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