How old are the Sierra Nevada mountains? Space radar offers clues
Geologists aim to determine if the Sierra Nevada mountains are either 40 million to 80 million years old or only 3 million years old.
theyarefloatinginspace liked this 
inspiringcolors liked this 
pizzashack liked this 
bonedust liked this 
disco-dancer-donna liked this 
oh-biology-blog reblogged this from mothernaturenetwork 
www-outerspacepi liked this 
mrs-misguided liked this 
lorddarthstrix-blog liked this 
grainneskytree-blog reblogged this from mothernaturenetwork 
mothernaturenetwork posted this