Overblog
Suivre ce blog
Editer la page Administration Créer mon blog

Earth of fire

Actualité volcanique, Article de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié par Bernard Duyck
Publié dans : #Excursions et voyages

The extreme southern tip of the Kamchatka Peninsula , although less visited, has a set of interesting volcanic structures.

Among these , the Kuril Lake , discovered in 1703 by the Cossacks .

It is located in the eastern part of the caldera Pauzhetka , extending east- west for 25 km ; it is intersected by a major fault system .

The Kuril lake, 13 km by 10 , has an irregular bottom; its northern part shaped plate gravy boat has a maximum depth of 300 meters , while the more irregular southern part , is even more profound. The lake is fed by snowmelt and rainwater , as well as some rivers, Etimynk , Hakytsin , Vychenkiya and Kirushutk . It drains into the Ozernaya River, which flows westward into the Sea of ​​Okhotsk.

Kuril lake / Kamchatka - photo Shine Phantom

Kuril lake / Kamchatka - photo Shine Phantom

Southern Kamchatka : the Kuril Lake

Southern Kamchatka : the Kuril Lake

Kurile Lake caldera was formed in two steps, one dated to the late Pleistocene , 41,500 years ago ( radiocarbon dating ) .

The second step , dated 6440 BC, is considered one of the largest eruptions of the Holocene , ranked VEI 7 by the GVP , the order of magnitude of those of Santorini or Tambora . A total of 140 - 170 km ³ of material was ejected , and pyroclastic deposits have cleared the whole country . Ash from the eruption have been found in more than 1,000 km. on the Asian continent.

The lake has several islands , named Chayachy , Serdtze , Nizkii , Glinyanii and Samang . Serdtze Alaida, in the center of the lake, is a rhyodacitic lava dome with steep walls , which was formed at the end of the caldera -forming eruption .

Several bays were formed by lava flows , the Tioploï Bay has hot springs where the temperature reaches 45 ° C.

Kuril Lake - Salang island - photo Shine Phantom

Kuril Lake - Salang island - photo Shine Phantom

Kuril Lake - the dome Serdtze Alaida and the volcano Ilyinsky - photo Shpilenok / Live Journal

Kuril Lake - the dome Serdtze Alaida and the volcano Ilyinsky - photo Shpilenok / Live Journal

Pyroclastic deposits in the valley of the river Ozernaya , 4 km . west of Lake Kuril , reach a thickness of 100 meters. The erosion of the non-welded ignimbrites formed the famous obelisks of Kutkhiny Baty .

According to local legend , they resemble to giant canoes stood up to dry :
Kutkhu, god and creator of Kamchatka, would have used for fishing on the lake and the close ocean . Before leaving the Kamchatka Kutkhu raised its boats ( Baty ) ... since this place is considered sacred by local tribes .

Kutkhiny Baty - photo Air Pano

Kutkhiny Baty - photo Air Pano

 Kutkhiny Baty - Photo Atlas of wonders

Kutkhiny Baty - Photo Atlas of wonders

 Kutkhiny Baty - photo Igor Shpilenok 2012

Kutkhiny Baty - photo Igor Shpilenok 2012

The Kuril Lake is famous for being the greatest place in Asia spawning kokanee red salmon or alternatively , sockeye . Between 3 and 5 million salmon spawn in the lake between July and March. This attendance is the happiness of brown bears, about 200 individuals, river otters and foxes , supported by Steller eagles ( estimated at between 300-700 individuals population), white-tailed eagles (150-200 ) and golden eagles (50). The lake is also the place of wintering for the whooper swans and ducks (1 500-2 000 ) .

Nearby, the volcanoes Ilyinsky , Kambalny , Koshelev and Zhelotovsky ... to see soon.

 

Sources :

- La caldeira Pauzhetka - Oregonstate University - link

- Global Volcanism Program - Kuril lake

- Les photographes du Lac Kourile. Sergey Gorchkov. - link

Articles récents

Hébergé par Overblog