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 earlier epochs, which are distinguished by natural climatic shifts or biological events, the Anthropocene is marked by stratigraphic signals such as radioactive isotopes from nuclear tests, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Critics argue that human effects are diachronous, meaning they appear at different times across the globe, which violates the synchronous boundaries required for a formal geological unit. Proponents counter that the mid-20th century 'Great Acceleration' provides a globally consistent marker, albeit one tied to industrial development. This debate highlights a fundamental tension: whether geological classification should prioritize measurable physical markers or reflect broader societal narratives about humanity's role in shaping the planet.
❓ Según el pasaje, ¿cuál es una razón principal por la que algunos geólogos se oponen al reconocimiento formal del Antropoceno?
A. Los impactos humanos no son lo suficientemente significativos como para alterar los estratos geológicos.
B. Los marcadores propuestos no son globalmente simultáneos en su aparición.
C. La fecha de inicio de la época es demasiado reciente para ser estudiada por los geólogos.
D. Los isótopos radiactivos y los plásticos no se consideran indicadores fiables.
✅ 正确答案
The proposed markers are not globally simultaneous in their appearance.
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