The concept of the 'Anthropocene' has gained significant traction in geological and environmental circles, positing that human activity has become a dominant force shaping Earth's systems. Proponents argue that markers such as nuclear fallout, plastic pollution, and elevated carbon dioxide levels constitute a distinct stratigraphic signature, warranting a new geological epoch. However, critics within the geological community contend that the term lacks formal precision, as these markers are not globally synchronous and may not persist over geological timescales. They suggest that the Anthropocene is more aptly described as an ongoing historical event rather than a formal chronostratigraphic unit. This debate underscores a fundamental tension between the need for scientific rigor and the desire to highlight humanity's profound and lasting impact on the planet.
❓ According to the passage, what is the main reason some geologists oppose formally defining the Anthropocene as a new geological epoch?
A. The markers of human activity are too subtle to be detected in rock layers.
B. The proposed markers are not globally consistent and may not endure over long geological periods.
C. The concept has only been promoted by environmentalists, not geologists.
D. Human impact on Earth is too recent to be studied scientifically.
✅ 正确答案
The proposed markers are not globally consistent and may not endure over long geological periods.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first