During all of my hikes over the Sierra the past few years, I’ve had soooo many questions about how and why things are the way there are, geologically speaking. I’d see a huge lava outcropping and I’d wonder when that got there and how? Was it blown to it’s current resting place from a distant volcano? Did it pop out of the ground from an ancient fissure? Just how old are the Sierra anyway?
I’m finally taking some time to seriously study Geology. I have some answers and my hikes are that much more interesting! This Earth has been evolving for 4.6 billion years and we’ve only been here 200,000 years of it. Heating up, cooling down, over and over again with many variations of life forms that have come and gone over the millions of years. Continents moving around, and still on the move. The Hawaiian Islands are moving in a Northwest direction about 4 inches a year! Eventually they will join up with Japan! Australia is moving Northward about 2.7 inches a year. All the plates are moving, some faster than others. Don’t believe me? Study Geology! I would love to drive to Australia.. Mountains pushing up and STILL getting higher. Think Everest is high now? Just you wait! What will be here a million years from now? Us? Something else? Nothing? Hmmm….. things I think about when I hike! Geology is COOL!
Today, we take a short hike up to an ancient lava flow plateau that was formed during the creation of the Sierra Nevada when the entire range was bubbling with volcanoes and molten lava being pushed up everywhere!! Here is some interesting reading about the Sierra.
With winter around the corner, the trees are singing their songs and a warning that a big change is soon to come.