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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

Researcher shares platform with Nobel Laureate at conference on nanomedicine
2013-01-10

Prof. Lodewyk Kock at the Everest viewpoint with Mount Everest behind him.
10 January 2013

Profs. Lodewyk Kock and Robert Bragg from the Department of Microbial, Biochemical and Food Biotechnology at the University of the Free State (UFS) both presented lectures at the first International Conference on Infectious Diseases and Nanomedicine that was held in Kathmandu, Nepal, late last year.

At the conference, also attended by senior representatives from the International Union of Microbiological Societies (IUMS), Prof. Kock delivered one of the two opening lectures, titled: Introducing New Nanotechnologies to Infectious Diseases (the other opening lecture was presented by Nobel Laureate, Prof. Barry J. Marshal). Prof. Kock also participated in the farewell address.

In two excellent lectures, Prof. Bragg spoke on Bacteriophages as potential treatment option of antibiotic-resistant bacteria, and on Bacterial resistance to quaternary ammonium compounds.

For Prof. Kock this very first conference on infectious diseases and nanomedicine was followed by a very exciting yeast research excursion through the Mount Everest Highway which winds through the villages of the Sherpa tribe.

He describes his journey: “The Mount Everest Highway is a rough road stretching through hills and glacial moraines of unfamiliar altitudes and cold temperatures. Throughout the journey I had to take care of not contracting altitude sickness which causes severe headaches and dizziness.

“The only way of transport is on foot, on long-haired cattle called Yaks, donkeys and by helicopter. After flying by plane from Kathmandu (the capital of Nepal), I landed at Lukla, regarded as the most dangerous airport in the world due to its short elevated runway and mountainous surroundings. From Lukla, the land of the Sherpa, I walked (trekked) with my Sherpa guide and porter (carrier) along the Everest Highway surrounded by various Buddhist Mani scripture stands, other Buddhist representations and many spectacular snow-tipped mountains of more than 6 000 m above sea level. Of these, the majestic mountain called Ama Dablam (6 812 m), the grand 8 516 m high peak of Lhotse and to its left the renowned Mount Everest at 8 848 m in height, caught my attention.

“Dwarfed by these mountain peaks on the horizon, I passed various villages until I eventually reached the beautiful village called Namche Bazar, the heart of the Khumbu region and hometown of the Sherpa. This took three days of up to six hours walking per day, while I spent the nights at the villages of Phakding and Monjo. From there I walked along the Dudh Kosi River which stretches towards Mount Everest, until I reached the high altitude Everest viewpoint – the end of my journey, after which I trekked back to Lukla to return to Kathmandu and South Africa.

“This expedition is the first exploration to determine the presence of yeasts in the Everest region. Results from this excursion will be used in collaborative projects with local universities in Nepal that are interested in yeast research.”

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