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24 October 2018
Geologist shares ground-breaking findings at Alex du Toit lecture
From the left: Prof Marian Tredoux, Associate Professor in the UFS Department of Geology, Prof Lew Ashwal, and Snegugu Zigubu, BSc (Hons) Geology student.
The Department of Geology at the University of the Free State (UFS) was recently the host of a lecture in the 2018 Alex du Toit Memorial Lecture series.

The speaker at this event was the A-rated NRF researcher, Prof Lew Ashwal from the University of the Witwatersrand. He addressed academics and geology students on ‘Wandering continents of the Indian Ocean’.

Lost continent found

In this talk he specifically shared the research he conducted on the islands of Madagascar (which he visited 30 times to conduct field work and says it is not for the faint-hearted), the Seychelles, and Mauritius. 

Two things stood out in his lecture: the way in which his findings on the three islands helped to refine details about the assembly of the Gondwana supercontinent, and the report of a ‘lost continent’ found under Mauritius. 

These discussions were linked by Prof Ashwal’s belief that the so-called lost continent he found under Mauritius is a leftover from the break-up of Gondwana,

The discovery was made when he and a team of researchers found zircon from 2000 million years ago on a 9-million-year-young island. He believes that the piece of crust (where the tested zircon probably formed), which was covered by lava during recent volcanic eruptions on the island, is a tiny piece of the ancient continent which broke off from Madagascar, when Africa, India, Australia and Antarctica split up and formed the Indian Ocean.

Media frenzy 

The fact that the team of researchers found these extremely old minerals proves that there are materials under Mauritius that originated from a continent under the island. 

Prof Ashwal is studying the break-up process of the continents in order to understand the geological history of the planet.

For his work Prof Ashwal has enjoyed coverage from publications as far apart in focus from each other as The New York Times and Cosmopolitan magazine. 

News Archive

Two of our academics contribute to a fascinating book
2012-08-11

Prof. Jo van As earlier this year with proofs of the book The Story of Life & the Environment: An African Perspective.
Photo: Leatitia Pienaar
10 August 2012

The planet has more species than ever before, but humans are responsible for the biggest mass extinction of all times. This is according to Prof. Jo van As, Head of the Department of Zoology and Entomology. He was speaking at the launch of the book The Story of Life & the Environment: An African Perspective.

The book was published by Random House Struik in July 2012 and is a sister publication of The Story of Earth & Life by Prof. Bruce Rubidge, which was published in 2005.

The Story of Life & the Environment: An African Perspective took five years to complete. Prof. Van As was the compiling author, with Prof. Johann du Preez, Head of Plant Sciences at our university, Prof. Leslie Brown of Unisa and Prof. Nico Smit of the North-West University as co-writers.

Prof. Van As said, “No other species has destroyed the earth as we have done. Biological diversity disappears at the rate of mass extinction. The effects of human activities on the biological diversity is bigger that the extinction of the dinosaurs.”

He, however, added that The Story of Life & the Environment: An African Perspective does not sketch a doomsday scenario. It has also a message of hope. Prof. Van As said it was good to see progress in conservation and care for the environment. Trans-frontier parks the size of some countries are a good example of work in this regard.

Mr Stephen Johnson, chairperson of the board of Random House Struik, said at the launch that the publishing house was proud to be associated with the impressive book. The publication will be a touchstone for thoughtful readers for a long time. It will also remain a general book for the public and learners on the topic. The content and design was done in such a way that the publication will be relevant to all audiences.

The Afrikaans version of the book, Die Verhaal van Lewe en die Omgewing, will be published soon.
 

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