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UFS Department of Geology co-host of GeoCongress 2025

25 March 2025 | Story Leonie Bolleurs | Photo Supplied

The Department of Geology at the UFS is co-hosting this year’s GeoCongress 2025 with the Geological Society of South Africa. Pictured is Dr Martin Clark, Senior Lecturer in the Department of Geology and convener of the congress.

The Department of Geology in the Faculty of Natural and Agricultural Sciences at the University of the Free State (UFS) and the Geological Society of South Africa will co-host GeoCongress 2025, set to take place from 23 to 27 June 2025 on the UFS Bloemfontein Campus. This prestigious biennial academic event, themed: Embracing change through collaboration, will bring together leading academics, students, and industry experts from across South Africa to explore the latest advancements in geosciences.

The congress reflects the university's commitment to academic excellence, quality, and impact – core tenets of its UFS Vision 130. As a research-led, student-centred, and regionally engaged university, the UFS continues to transform itself to stay relevant within the dynamic and ever-changing international higher education sphere.

Prof Vasu Reddy, Deputy Vice-Chancellor: Research and Internationalisation, says “The university is proud to co-host this major gathering of established and emerging earth scientists from a variety of disciplines, who will present relevant, timely research topics to a wider audience. The theme underscores the centrality of geosciences to our aspirations as a university for the country and continent, directing us towards a collective sustainable future. We are excited by the ideas to be featured at this conference. More importantly, we are inspired by the prospect of further promoting real interaction and innovation between academia, industry, and society for impactful change.”

A platform for scientific excellence

It is fitting for the UFS to co-host this event, as geologists in the Department of Geology as well as in the province have made significant contributions across multiple fields, including economic geology, palaeontology, and geomorphology.

In the Department of Geology, for instance, researchers are exploring a wide range of topics, including magmatic processes in the platinum-group-bearing Bushveld Igneous Complex, AI-driven prospectivity modelling of global deposits, meteorite impact-related processes in the Vredefort impact structure, and geological and structural studies in the Namaqualand region.

In the Free State, known for its rich mineral resources, including gold, diamonds, and coal, geologists have played a big role in exploring and developing these resources, particularly in the Free State Goldfields, one of South Africa’s leading gold-producing areas. The province also boasts significant coal deposits, important for power generation. In palaeontology, geologists have helped uncover valuable fossil sites, including the Florisbad hominid site, offering insights into the history of life on earth. Additionally, their research in geomorphology, especially around the Florisbad area, has shed light on unique landscapes and depositional environments, including lunette dunes.

In agriculture, geologists have worked closely with farmers to ensure sustainable land use, providing important information on soil composition and erosion prevention. They have also played a key role in the study of groundwater resources, helping to identify and assess borehole sites for irrigation and domestic water supply, which is key to farming in the region. The Institute for Groundwater Studies (IGS) at the UFS is the only institute in South Africa dedicated to geohydrology. Founded in 1974 by Prof FDI Hodgson, the IGS is the oldest institute at the university and has produced more than 1 000 postgraduate students. The institute conducts research on a wide variety of water-related topics. Of special interest is its contribution to the mining and industrial sectors in terms of water management, minimisation of pollution, as well as understanding the nature and behaviour of South Africa's aquifers. The IGS provides a complete service to these industries through field investigations, the development of specialised field equipment, an accredited laboratory, and computer models for aquifer management.

Building on these contributions in the field, GeoCongress 2025 marks an important event on South Africa’s geoscience calendar, showcasing the latest scientific advancements, innovative research, and practical applications shaping the industry. With engaging academic sessions, dynamic workshops, and practical field excursions, the conference offers attendees the opportunity to participate in meaningful discussions, attend insightful presentations, and take part in excursions that bring theory to life.

Opportunities for networking and growth

GeoCongress 2025 is more than just an academic gathering – it is an opportunity for professional growth and networking. Participants will meet peers, mentors, and industry leaders, establishing connections that can lead to new research projects and collaborations.

There is plenty to look forward to at this year's conference. Here are the key dates and event highlights for GeoCongress 2025.

• Call for abstracts: Closes on 31 March 2025

• Early bird registration: Closes on 31 March 2025

• Final registration deadline: Closes on 22 June 2025

Event highlights:

• 23 and 24 June 2025: Pre-conference workshops and field trips

• 25 to 27 June 2025: Conference programme featuring keynote speakers, academic sessions, and networking opportunities

Registration fees:

• Standard registration: R3 500 (from 1 February 2025)

• Students and retirees: Flat rate of R500 (proof of registration required for students)

Additional costs:

• Workshops and one-day excursions: Visit the GeoCongress website for information on the costs

• Conference/gala dinner: R500

For more information, please contact us at secretariat@geocongress2025.org.za.

News Archive

Research on cactus pear grabs attention of food, cosmetic and medical industry

2015-02-18

Cactus pear
Photo: Charl Devenish

The dedicated research and development programme at the UFS on spineless cactus pear (Opuntia ficus-indica) – also known as prickly pear – has grown steadily in both vision and dimension during the past 15 years. Formal cactus pear research at the UFS started with the formation of the Prickly Pear Working Group (PPWG) in June 2002. It has since gone from strength to strength with several MSc dissertations and a PhD thesis as well as popular and scientific publications flowing from this initiative.

According to Prof Wijnand Swart from the Department of Plant Sciences, the UFS is today recognised as a leading institution in the world conducting multi-disciplinary research on spineless cactus pear.

Cactus pear for animal feed

Increasing demands on already scarce water resources in South Africa require alternative sources of animal feed – specifically crops that are more efficient users of water. One alternative with the potential for widespread production is spineless cactus pear. It is 1.14 x more efficient in its use of water than Old man saltbush, 2.8 x more efficient than wheat, 3.75 x more efficient than lucerne and 7.5 x more efficient than rangeland vegetation.

“Studies on the use of sun-dried cactus pear cladodes suggest that it has the potential to provide some 25% of the basic feed resources required by South Africa’s commercial ruminant feed manufacturing sector,” says Prof HO de Waal of the Department of Animal, Wildlife and Grassland Sciences at the UFS.

Until recently, research has focused extensively on the use of cactus pear as drought fodder. However, this is now beginning to shift, with growing interest in the intensive production of spineless cactus pear for other types of animal feed. One example is the spineless cactus pear fruit, produced seasonal, yielding large quantities of fruit in a relatively short period of a few months in summer. Unless kept in cold storage, the fruit cannot be stored for a long period. Therefore, a procedure was developed to combine large volumes of mashed cactus pear fruit with dry hay and straw and preserve it for longer periods as high moisture livestock feed, kuilmoes – a high water content livestock feed similar to silage.

Cactus pear and Pineapple juice
Photo: Charl Devenish

Cactus pear for human consumption

“In addition to its use as a livestock feed, cactus pear is increasingly being cultivated for human consumption. Although the plant can be consumed fresh as a juice or vegetable, significant value can be added through processing. This potential is considerable: the plant can be pickled; preserved as a jam or marmalade; or dried and milled to produce baking flour. It can also serve as a replacement of egg and fat in mayonnaise,” said Dr Maryna de Wit from the Department of Microbial, Biochemical and Food Biotechnology.

The extraction of mucilage from fresh cladodes can form a gelling, emulsifier, and fat-replacing agent commonly found in food products such as mayonnaise and candy. During an information session to the media Dr De Wit and her team conducted a food demonstration to showcase the use of the cladodes in a juice, chicken stir-fry, biscuits and a salad.

The extrusion of cactus pear seed oil provides a further lucrative niche product to the array of uses. These include high-value organic oil for the cosmetic sector, such as soap, hair gel and sun screens.

The cladodes and the fruit also have medicinal uses. It has anti-viral, anti-inflammatory, pain killing and anti-diabetic agents. It is also high in fibre and can lower cholesterol. The fruit also prevents proliferation of cells and suppresses tumour growth and can even help to reduce a hangover.

In South Africa the outdated perception of cactus pears as thorny, alien invaders, is rapidly disappearing. Instead, farmers now recognise that cactus pear can play a vital role as a high yielding, water-efficient, multi-use crop, said Prof de Waal and the members of the Cactus Pear Team.

Facebook photo gallery
Dagbreek interview with Dr Maryna de Wit

Research on cactus pear (read the full story)

For more information or enquiries contact news@ufs.ac.za

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