Visual Communication: Do You See What I See?

Visual displays of data, images of subatomic to planetary-scale features, and animations of geological processes are widely used to enrich our disciplines. However, their communicative power may be dramatically different to a student and to an expert because of the need for prior knowledge and inference when interpreting visuals. To “see” equivalent visual information, the non-expert must learn the visual language of the expert. Teaching visual literacy is important to instruction at all levels and is as fundamental to a discipline as its vocabulary. The underlying foundations of visual literacy and the recognition of what one “sees” and interprets in a visual depiction are critical for enhancing student learning and for effective communication in our visually rich discipline.

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December 2025 --The Variscan Orogeny in Europe – Understanding Supercontinent Formation

The Variscan orogen formed between 380 and 300 million years ago through several accretionary and collisional cycles, culminating with the construction of the Pangea supercontinent. This process occurred via sequential opening and closure of oceanic basins, synchronous detachment of Gondwana derived continental ribbons, and their outboard amalgamation onto the Laurussia margin. The Variscan orogen is rather unique compared with other orogenic belts on Earth: its overthickened and dominantly magmatic crust in the central belt, surprisingly minor mantle involvement in the magmatic and geodynamic processes, coherent and pulsed magmatism along the collision suture, and its complex accretionary history. Because its final product, Pangea, is the youngest and best-understood supercontinent on Earth, the Variscan orogeny offers clues for understanding the mechanisms of supercontinent formation.