The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by significant human impact on Earth's systems. Proponents argue that markers such as plastic pollution, radioactive isotopes from nuclear tests, and elevated carbon dioxide levels are distinct enough to warrant a formal boundary in the stratigraphic record. However, critics contend that human-induced changes are diachronous, occurring at different times across the globe, which undermines the utility of a single, globally synchronous marker. This debate highlights a fundamental tension in geology between the need for precise chronological definitions and the recognition of complex, spatially variable environmental processes.
❓ Según el pasaje, ¿cuál es una razón principal por la que los críticos se oponen a definir el Antropoceno como una época geológica formal?
A. Los impactos humanos no son lo suficientemente significativos como para dejar huellas geológicas duraderas.
B. Los marcadores propuestos, como la contaminación por plásticos, son demasiado recientes para ser estudiados.
C. Los cambios inducidos por el ser humano no ocurrieron simultáneamente en todo el mundo, lo que complica un límite global.
D. El concepto del Antropoceno tiene poca relevancia para la investigación estratigráfica.
✅ 正确答案
Human-induced changes did not occur simultaneously worldwide, complicating a global boundary.
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