雅思阅读

📖 Reading Passage

The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by human impact on Earth's systems. Unlike previous epochs, which are identified by natural stratigraphic markers, the Anthropocene is characterized by anthropogenic signatures such as nuclear fallout, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that human influence is not uniform temporally or spatially, making it difficult to establish a clear chronological boundary. Proponents counter that the mid-20th century 'Great Acceleration' offers a distinct marker, as post-1950 deposits exhibit unprecedented and synchronous changes across multiple proxies. This debate underscores a fundamental tension in geology: whether to prioritize a narrative of human intervention or adhere strictly to naturalistic criteria for stratigraphic classification.