Planet earth dating

In the early 20th century, scientists refined the process of radiometric dating.

In an effort to calculate the age of the planet, scientists turned to the rocks that cover its surface.However, because plate tectonics constantly changes and revamps the crust, the first rocks have long since been recycled, melted down and reformed into new outcrops.By studying other bodies in the solar system, scientists are able to find out more about the early history of the planet.The nearest body to Earth, the moon, does not suffer from the resurfacing problems that cover Earth's landscape.Scientists attempted to predict the age based on changing sea levels, the time it took for Earth or the sun to cool to present temperatures, and the salinity of the ocean.

As science progressed, these methods were proven to be unreliable; for instance, the rise and fall of the ocean was shown to be an ever-changing process rather than a gradually declining one.We are an online dating and social networking website for single women and men who take green issues seriously.Our members are smallholders, organic famers, environmentalists, ramblers, ecologists and those that follow the principles of the good life.These tiny zirconium silicate crystals have ages that reach 4.3 billion years, making them the oldest materials found on Earth so far. The rocks and zircons set a lower limit on the age of Earth of 4.3 billion years, because the planet itself must be older than anything that lies on its surface.In an effort to further refine the age of Earth, scientists began to look outward.By examining the existing elements, scientists can calculate the initial quantity, and thus how long it took for the elements to decay, allowing them to determine the age of the rock.