Toomba volcano
| Toomba Volcano | ||
|---|---|---|
| location | Queensland , Australia | |
| Coordinates | 19 ° 30 ′ 0 ″ S , 145 ° 0 ′ 0 ″ E | |
|
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| Type | Shield volcano | |
| rock | basalt | |
The Toomba Volcano (English: Toomba or Toomba Volcano ) is one of the youngest volcanoes in the geological Nulla Volcanic Province , which is located on the edge of the Great Dividing Range at Charters Towers , about 150 km west of Townsville in Queensland in Australia . This volcano produced large masses of lava and created a lava flow of 120 kilometers in length 13,000 years ago.
volcano
In the Nulla Volcanic Province there are 46 volcanic centers that were active during the last 5.2 million years.
The Toomba , a shallow shield volcano, was active from 13,000 to 100,000 years ago.
Toomba lava flow
The Toomba Lava, also called Toomba Basalt, flowed out of this volcano 13,000 years ago. The lava flow stretched 120 kilometers and formed one of the longest lava flows on earth.
13,000 years ago, lava initially flowed into the Lolworth Creek area in three parallel rivers six kilometers in length . The solidified lava there reached a thickness of seven meters and a width of 35 to 300 meters. In the further course, the lava united to form a river that was on average 18 meters thick and 500 meters wide. In individual cases, the lava reached a width of eight kilometers and solidified at the level of the terrain level with slopes of 45 ° to 90 °. Inside the lava masses, lava tubes were created by the so-called candle wax effect . The lava flow then followed the old riverbed of the Burdekin River in a north-easterly direction, changing the original landscape and thereby enabling the development of extensive and complex rainforests.
The fact that lava flows so far and forms tubes depends on the terrain and its chemical composition.
Individual evidence
- ↑ a b public.jcu.edu.au ( Memento of the original from May 31, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. : Toomba , accessed January 22, 2012
- ↑ volcano.oregonstate.edu : PW Whitehead, PJ Stephenson: Toomba, Queensland, Australia , Journal of Geophysical Research, VOL. 103, NO. B11, pp. 27, 371-27,382, 1998, in English, accessed January 22, 2012
- ↑ agu.org : Lava rise ridges of the Toomba basalt flow, north Queensland, Australia , in English, accessed January 22, 2012
