deep-sea sediment cores

Deep-sea sediment cores are long, cylindrical samples taken from the ocean floor. They contain layers of sediments—tiny particles, minerals, and ancient fossils—that settle over thousands to millions of years. By examining these layers, scientists can reconstruct past climate conditions, ocean chemistry, and Earth's history. The cores are extracted using specialized equipment from ships and provide a chronological record of environmental changes, helping us understand how our planet has evolved and how current climate trends may develop.