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🔆 Earth’s Oldest Rocks Found in Quebec, Canada

📍 Researchers identify Earth’s oldest-known rocks
✅ Located along Hudson Bay in Quebec, Canada
✅ Rocks belong to Nuvvuagittuq Greenstone Belt
✅ Dated to 4.16 billion years ago, from the Hadean Eon
✅ Rocks are metamorphosed volcanic rocks of basaltic composition
✅ Formed from magma intrusions, which cooled & solidified underground
✅ Provide rare insights into Earth’s earliest crust formation
✅ Help decode conditions during the Hadean, a time with little physical evidence
✅ Previous record: 4.03 billion-year-old rocks from Northwest Territories, Canada

📘 Source: Reuters | Study published in journal Science


📝 Prelims Question:
Which geological formation was recently found to contain Earth’s oldest-known rocks?
A. Canadian Shield
B. Appalachian Belt
C. Nuvvuagittuq Greenstone Belt ✅
D. Laurentian Plateau

📝 Mains Question:
Discuss the significance of the discovery of 4.16-billion-year-old rocks in Quebec for understanding early Earth history and the formation of the planet’s crust.


#Geography #GS1

UPSC Mapping Prelims Mains
🔆 Earth’s Oldest Rocks Found in Quebec, Canada

📍 Researchers identify Earth’s oldest-known rocks
✅ Located along Hudson Bay in Quebec, Canada
✅ Rocks belong to Nuvvuagittuq Greenstone Belt
✅ Dated to 4.16 billion years ago, from the Hadean Eon
✅ Rocks are metamorphosed volcanic rocks of basaltic composition
✅ Formed from magma intrusions, which cooled & solidified underground
✅ Provide rare insights into Earth’s earliest crust formation
✅ Help decode conditions during the Hadean, a time with little physical evidence
✅ Previous record: 4.03 billion-year-old rocks from Northwest Territories, Canada

📘 Source: Reuters | Study published in journal Science


📝 Prelims Question:
Which geological formation was recently found to contain Earth’s oldest-known rocks?
A. Canadian Shield
B. Appalachian Belt
C. Nuvvuagittuq Greenstone Belt ✅
D. Laurentian Plateau

📝 Mains Question:
Discuss the significance of the discovery of 4.16-billion-year-old rocks in Quebec for understanding early Earth history and the formation of the planet’s crust.


#Geography #GS1
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🔆 Earth’s Oldest Rocks Found in Quebec

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