Kolkata: Zircon a little more than 4 billion years old has previously been found in Kerala’s Wayanad (in 2016) and from the river Baitarani in Odisha (in 2018). The Earth’s oldest zircon discovery, ...

Figure 1: Trace element cumulative frequency diagrams for zircons from I- and S-type granites of the Lachlan Fold Belt, and from the Jack Hills. Figure 2: Relationship between the concentrations of ...

Researchers from Presidency University, Hiroshima University and the National Centre for Earth Science Studies have found rock samples from Chitrial, around 100 km north of Hyderabad in Telangana, ...

The Hadean protocrust is the name for the earth’s crust — its outermost layer — when it first formed. The ‘Hadean’ prefix refers to the planet’s first geologic aeon. At this time, within 200 million ...

A new study has revealed that more than four billion years ago the Earth's surface was drastically altered by a bombardment of giant asteroids. Researchers from around the globe made the discovery ...