The Layers of Earth

Single philosophers and scholars already in antiquity noted and philosophized about layers found in some outcrops of rocks.

Recognizing fossils as remains of once living sea creatures, some of the Greek philosophers hypothesised that the conformation of land and sea changes over time, and Muslim scholars described the layering of rocks and explained them by accumulation and deposition of rock fragments. But these great ideas were proposed by single individuals or small groups, and no consistent school of thought or even culture dedicated to the study of rocks developed, most knowledge arise, and soon got lost, and had to be rediscovered again and again during the following centuries.

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