Ol Doinyo Lengai - Wikipedia
Ol Doinyo Lengai is an active volcano in northern Tanzania. It consists of a volcanic cone with two craters, the northern of which has erupted during historical time. Uniquely for volcanoes on Earth, it has erupted natrocarbonatite, [2] an unusually low temperature and highly fluid type of …
Volcano Watch — World's Coolest Lava is in Africa
2003年4月17日 · Because of its very unusual composition, carbonatite is literally the coolest lava on earth, erupting at 500-600 degrees Centigrade (930-1,100 degrees F), compared with 1,160 degrees C (2,120 degrees F) for lava from Kilauea's current eruption. An active carbonatite flow is black or brown and reminds many eyewitnesses of runny mud.
Carbonatite - Wikipedia
Carbonatite is known to form in association with concentrically zoned complexes of alkaline-igneous rocks, the typical example of this being Phalaborwa, South Africa. Carbonatites in the form of sills, lopoliths and rare dikes are reported in the Guyana Shield .
Strangest Magma on Earth: Carbonatites of Ol Doinyo Lengai
2014年3月11日 · If you had to pick the most bizarre volcano on Earth, Tanzania's Ol Doinyo Lengai would win. It looks crazy, and it's the only place on the planet that is currently erupting carbonatite lava,...
Volcano in Tanzania with weirdest, runniest magma on Earth is …
2024年8月2日 · Tanzania's outlandish Ol Doinyo Lengai volcano, the only volcano on Earth that is currently erupting carbonatite lava, has been sinking at a rate of 1.4 inches per year for the past decade.
Origin of carbonatites—liquid immiscibility caught in the act
2022年5月24日 · Such knowledge could also contribute to the longstanding question why the majority of carbonatitic rocks worldwide are Ca-carbonatites while the only active carbonatite volcano (Oldoinyo...
Origin of alkali-rich volcanic and alkali-poor intrusive carbonatites ...
2021年9月2日 · The compositional gap between Na-rich compositions of the only modern carbonatitic lavas (Oldoinyo Lengai volcano) and ancient alkali-poor intrusive carbonatites has strongly influenced ...
World's Most Unusual Volcano: Origin Of Carbon-based Lavas Revealed
2009年5月7日 · Although carbon-based lavas, known as carbonatites, are found throughout history, the Oldoinyo Lengai volcano, located in the East African Rift in northern Tanzania, is the only place on Earth...
Carbonatite research: The African Legacy - ScienceDirect
2024年9月1日 · African carbonatites are extremely diverse rocks in many aspects, ranging in age from 2.06 Ga (Palabora, also known as Phalaborwa) to the present day (Oldoinyo Lengai) and forming plutonic or volcanic complexes. Some localities, e.g., Kerimasi volcano, contain both intrusive and extrusive carbonatites.
Displaced cratonic mantle concentrates deep carbon during …
2020年6月3日 · Lithospheric transport of cratonic carbon. Continental rifts are rife with dilational fault systems that act as permeable conduits for the ascent of deep mantle volatiles released from cooling ...