What geologic event separates the Pleistocene epoch from the Holocene epoch?

The Pleistocene epoch is separated from the Holocene epoch by the last major glacial event known as the Last Glacial Maximum, which occurred around 20,000 years ago. This transition marks the end of the last Ice Age and the onset of a warmer climate, leading to the melting of glaciers and significant environmental changes. The Holocene epoch began approximately 11,700 years ago, following this glacial retreat, and is characterized by the development of human civilizations and significant ecological shifts.