Bentonites – Clays for Molecular Engineering

Smectites are the main components of bentonites; their characteristics define the remarkable range for their uses in industry and technology. Their application depends on their fundamental properties, namely, their atomic structure with a rather flexible crystal lattice, their variable chemical composition, their particle size, and their morphology. The interlayer region of smectites is a favorable target for molecular engineering to design organic and inorganic hybrid materials, including smectite–polymer nanocomposites and pillared complexes of smectite–metal oxides.

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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.