The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch, characterized by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were defined by natural climatic shifts or biological events, the Anthropocene is marked by human-induced changes such as nuclear fallout, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that human activities, while impactful, have not yet produced a stratigraphic signature distinct enough to warrant a new epoch, which traditionally requires a clear boundary in rock layers. Proponents counter that the rapid acceleration of these markers since the mid-20th century, known as the 'Great Acceleration,' provides a unique and unambiguous signal. This debate highlights the intersection of scientific rigor and societal urgency, as acknowledging the Anthropocene could influence policy-making and public perception of environmental responsibility.
❓ 围绕正式承认“人类世”的争议,主要原因是什么?
A. A. 人类活动并未引起任何显著的地质变化。
B. B. 所提出的时代在岩层中缺乏清晰的地层界限。
C. C. 地质学家对“大加速”起始时间意见不一。
D. D. 这一概念对环境政策或公众认知没有影响。
✅ 正确答案
B. The proposed epoch lacks a clear stratigraphic boundary in rock layers.