By Siviwe Mxuma

 

On 03 October 2023, Professor Stephen Anthony Prevec delivered his inaugural lecture titled "My four decades of geological pursuit: Are we there yet?" This significant occasion marked the evolution of his academic journey and contributions to Earth Science.

In his opening introductory remarks, Rhodes University Vice-Chancellor Professor Sizwe Mabizela captured the essence of inaugural lectures, stating, "This tradition serves as an introduction and induction of new Professors and as a platform to showcase their scholarly contributions to their discipline. It is also an occasion in which we, as academic peers, colleagues, students, family, friends, and the public, celebrate the intellectual and scholarly achievements and contributions of one of our own."

Professor Prevec's ability to make complex geological concepts accessible to all, even those unfamiliar with the subject, became evident as he took the stage. He blended geological insights with anecdotes, creating a captivating lecture.

He shared personal stories that offered a glimpse into his academic journey and his love for his family. These anecdotes added a unique dimension to the lecture, transforming it into more than just a scientific exploration but a narrative of a geologist's life experiences.

Professor Prevec's lecture delved into Earth Science, focusing on topics ranging from igneous rocks to ore deposits and impact cratering. His knowledge and research experience shone through as he navigated the terrain of geological paradigms. Yet, he never lost sight of his audience, ensuring everyone could grasp the essence of his research and its implications for our understanding of Earth's geological history.

A notable highlight of Professor Prevec's lecture was his discussion of radioactivity in geological processes. Radioactive decay of elements within Earth's crust has been instrumental in dating rocks and determining the age of geological formations. The concept of radioactivity in the nuclei of elements, such as uranium and thorium, has revolutionised our ability to establish precise geological timelines.

Another significant aspect of Professor Prevec's lecture was his reference to the Isochron diagram, which was formerly known as the Nicolaysen diagram. This graphical representation is a fundamental tool in geochronology, enabling scientists to understand the age and history of geological materials. It has played a crucial role in dating rock formations, volcanic eruptions, and the movement of tectonic plates.

Professor Prevec's lecture also touched upon his ongoing research collaborations, particularly with Rhodes University colleagues Steffen Büttner and Denis Pollney. Together, they are investigating the formation of impact craters and the unique geological features they produce. One intriguing aspect of their research is the study of the "puddle of liquid" that forms when a meteorite impacts the Earth's surface.

One of the most remarkable aspects of Professor Prevec's lecture was his ability to seamlessly integrate his life's work into his presentation. His dedication to geological research over the years was palpable, and it underscored the significance of his contributions to the field. As he shared his discoveries and insights, it became evident that his passion for Earth Science has been a driving force throughout his career.

Throughout the lecture, the audience was not only educated but also inspired by Professor Prevec's unwavering commitment to his craft. His love for geology and his ability to communicate its wonders left an indelible mark on those present in the lecture hall. He demonstrated that the pursuit of knowledge is not just a scholarly endeavour but a deeply personal and fulfilling journey.

The Professor's inaugural lecture showcased his ability to bridge the gap between scientific concepts and understanding, all while sharing stories that resonated with the audience. His contribution to the field of geology and his impact on his students and colleagues were celebrated on this day. As Professor Prevec posed the question, "Are we there yet?" it was clear that his journey in academia had been remarkable. And the answer resounded in the hearts of those who had the privilege of attending his lectu