The concept of the 'Anthropocene' has gained traction among geologists as a proposed new geological epoch defined by significant human impact on Earth's geology and ecosystems. Unlike previous epochs, which were shaped by natural forces such as volcanic activity or asteroid impacts, the Anthropocene is characterized by anthropogenic markers including radioactive isotopes from nuclear tests, plastic pollution, and elevated carbon dioxide levels. However, the formal recognition of this epoch remains contentious. Some scholars argue that human influence, while pervasive, does not yet represent a distinct stratigraphic boundary comparable to those of the Pleistocene-Holocene transition. Others contend that the scale and irreversibility of changes, such as biodiversity loss and climate alteration, justify a new epoch. This debate underscores a broader challenge in stratigraphy: balancing geological precision with the need to communicate planetary-scale changes.
❓ ¿Cuál es la razón principal de la controversia en torno al reconocimiento formal del Antropoceno como una época geológica?
A. A. El impacto humano aún no es detectable en los registros geológicos.
B. B. Algunos académicos cuestionan si los cambios inducidos por el ser humano cumplen los criterios para un límite estratigráfico distintivo.
C. C. La época carece de marcadores claros como isótopos radiactivos o contaminación por plásticos.
D. D. Los geólogos coinciden en que las fuerzas naturales siguen siendo los principales impulsores del cambio geológico.
✅ 正确答案
B. Some scholars question whether human-induced changes meet the criteria for a distinct stratigraphic boundary.
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