UNLIMITED Audiobooks and eBooks

Over 40,000 books & works on all major devices

Get ALL YOU CAN for FREE for 30 days!

Nuclear Clocks

Henry Faul

How does All You Can Books work?

All You Can Books gives you UNLIMITED access to over 40,000 Audiobooks, eBooks, and Foreign Language courses. Download as many audiobooks, ebooks, language audio courses, and language e-workbooks as you want during the FREE trial and it's all yours to keep even if you cancel during the FREE trial. The service works on any major device including computers, smartphones, music players, e-readers, and tablets. You can try the service for FREE for 30 days then it's just $19.99 per month after that. So for the price everyone else charges for just 1 book, we offer you UNLIMITED audio books, e-books and language courses to download and enjoy as you please. No restrictions.

Book Excerpt: 
. . .000,000 and up Whole rock Time of separation of the rock as a closed unit 100,000,000 and up Uranium-lead Zircon When crystals formed 200,000,000 and up Uranium-238 fission Many When rock last cooled 100-1,000,000,000 (Depending on material) 4

Time scale of the Earth, drawn to scale. See also the Holmes time scale on page 46.

Event Geologic Time Period Era Man appears[4] (2 million years ago) Quaternary CENOZOIC Tertiary Extinction of the dinosaurs (70 million years ago) Cretaceous MESOZOIC Mammals appear (130 million years ago) Jurassic Triassic Oldest known reptiles (300 million years ago) Permian PALEOZOIC Pennsylvanian Mississippian Devonian Silurian Ordovician . . . Read More