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Crawford Lake

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science2 years ago•4 min saved

Defining the Anthropocene: From Nuclear Fallout to Canadian Lakes

A team of scientists is recommending that a new geological epoch, called the Anthropocene, began between 1950 and 1954 due to the significant and lasting impact of human activities on the Earth. The scientists propose marking this epoch at Crawford Lake in Canada, where evidence of human impact, such as burning fossil fuels and pollution, is clearly preserved in sediment layers. The proposal still needs approval from geologists, but if accepted, it would signify a new age called the Crawfordian Epoch. The Anthropocene highlights the power and hubris of humankind, with the potential consequences of climate change leading to a tragic outcome if not addressed.

via NPR|

#anthropocene #climate-change #crawford-lake

science-and-environment2 years ago•5 min saved

"Crawford Lake: The Symbolic Beginning of the Anthropocene Epoch"

Scientists have identified Crawford Lake in Ontario, Canada as the potential "golden spike" marking the start of the Anthropocene, the age of humans. The lake's sediments contain a thousand-year record of environmental history, showing a surge in man-made disruption around the middle of the 20th century. The proposal to establish the Anthropocene as a new epoch beginning in 1950 will undergo scrutiny by the geology community before being ratified next year. While some scientists question the inclusion of the Anthropocene on the geologic time scale, the evidence from Crawford Lake and other sites is considered strong. Regardless of formal recognition, the findings aim to raise awareness about the rapid and irreversible changes caused by human actions.

via The Washington Post|

#anthropocene #climate-change #crawford-lake

science2 years ago•7 min saved

Earth's New Chapter: Unveiling the Anthropocene Epoch

Scientists have identified Crawford Lake in Ontario, Canada as the geological site that best represents the proposed new epoch called the Anthropocene, which reflects the profound impact of human activity on Earth. The Anthropocene Working Group (AWG) has been working since 2009 to make the Anthropocene part of Earth's official timeline, and if approved, it would be the third epoch of the Quaternary Period. The AWG will present a proposal to make the Anthropocene official later this summer, with a final decision expected in 2024. However, some experts question whether the Anthropocene rises to the level of epoch-defining and suggest it may be more of an ongoing geological event.

via CNN|

#anthropocene #crawford-lake #earths-history

science2 years ago•5 min saved

"Defining the Anthropocene: Crawford Lake and Nuclear Fallout as Markers of Human Impact on Earth"

A panel of scientists has chosen Crawford Lake in Ontario, Canada, to represent the start of the Anthropocene epoch, a proposed new chapter in Earth's history that marks significant human-induced changes to the planet. The lake was selected for its clear evidence of humankind's influence on the global geologic record, including changes in plutonium and radiocarbon from nuclear detonations, and fly ash from burning fossil fuels. The final ruling on the Anthropocene will determine the nomenclature used in academic studies and shape humanity's understanding of its impact on Earth. However, the process of ratification by geologists is still ongoing, and some members have resigned due to disagreements over the panel's approach.

via The New York Times|

#anthropocene #crawford-lake #geologic-time

science-and-environment2 years ago•4 min saved

"Crawford Lake: The Defining Site of the Anthropocene Epoch"

Scientists have chosen a sinkhole lake in Canada, known as Crawford Lake, to represent the start of the Anthropocene epoch, marking the end of a stable global environment and the beginning of a new age dominated by human activities. The lake's sediments show clear spikes from the impact of human activities, such as plutonium from hydrogen bomb tests and particles from fossil fuel burning. If approved, the official declaration of the Anthropocene as a new geological epoch will come in August 2024. This decision holds social, political, and scientific significance, highlighting the scale and severity of the planetary transformation caused by industrialized humanity.

via The Guardian|

#anthropocene #climate-crisis #crawford-lake

science2 years ago•1 min saved

Crawford Lake: A Key to Unlocking the Anthropocene Epoch?

Crawford Lake in Ontario, Canada, is being considered as the "golden spike" or formal starting point of a new epoch called the Anthropocene. The lake has a unique combination of attributes that make it a bellwether of global change, including an upper layer of water and a cold, dark deeper layer under which sediment is perfectly preserved. By examining the sediment, researchers can trace telltale signs of human activity, such as the burning of fossil fuels and the rise of acid rain. The International Commission on Stratigraphy will decide in months which of various candidates around the world gets the "golden spike" designation.

via Newser|

#anthropocene #crawford-lake #global-change

science-and-environment2 years ago•11 min saved

Crawford Lake: Key to Understanding the Anthropocene?

Crawford Lake in Ontario, Canada, is being considered as the official starting point for the Anthropocene, a new geologic chapter that marks the transition from the dependable environment of the past to the uncertain new reality humans have created. In just seven decades, humans have brought about greater changes than they did in more than seven millennia. Crawford Lake's sediments hold a record of more than a thousand years of history, showing how human pressures on the lake built up over the centuries until the world reached a tipping point around 1950. The Anthropocene Working Group is expected to select its preferred "Golden Spike" site this summer.

via The Washington Post|

#anthropocene #climate-change #crawford-lake