I didn't Realize grand ledge was so unique! I'm for sure going to take a closer look at the ledges. Also it was really interesting to see how Michigan was formed. This video does a great job at explaining the process.
This is a great summary of the geology of Michigan. I was able to take a field trip to the U.P. with a geology class and see the old, volcanic rocks that are present up there as well as take a tour of an operating copper mine. I thought it was very interesting that organisms such as gastropods and stromatolites were present during the Cambrian time.
Soon, there will be a new book on the geology of Michigan that will take the reader to 56 unique stops scattered across the state to see areas of geologic significance.
The gypsum that you speak of was mined until about the year 2000 in the Grand Rapids area. I worked with a guy who was a blaster first in the mines by Butterworth (where there remain concerns about sinkholes due to the shallow nature of the mine) and then at the mine near East Paris street out by the airport until he was layed off when the mine closed. I believe that one of the mines in the vicinity of the CSX rail yards is still used for document storage. So the Jurassic beds were used economically and may include potentially mineable potash deposits around Mecosta county. Still a good video so I will be leaving a thumbs up.
Great video! It was really interesting to learn about the unique processes that formed the geology of Michigan, and the species/climate that used to be there.
I did not realize that Michigan is so sedimentary heavy! It’s so fascinating that Michigan has been shaped and influenced by water, via marine environments, inland seas, swamps, and glaciers, while today it is in the middle of the continent.
I like the star to show where MI is located for the different time periods, however I think the state outline would be better to show scale for how much of the state is submerged or where it is located. Good video overall.
Interesting video, im no Randy Marsh so im not so smart with geology. But I remember knowing that because of the ice sheets, it exposed a lot of copper for native Americans to use and trade, essentially creating one of the earliest metal working civilizations. Also its native copper, i dont know how special that is in geology, but i love the pretty copper ores and malachites we get from the UP
Very good but to speedy, slow down and show more rocks-examples so Michigan citizens and others can be more familiar with what they see when hiking or just looking in their back yard.
It’s refreshing to see climate change being shown and the consequences explained in geological records after all climate change is currently being blamed on human activity. Folks, climate change is continuous wether humans are here or not. The planet is alive and continues to evolve.
Yes, the earth’s climate has always changed. What is different now is the RATE OF CHANGE. Burning of fossil fuels (mostly) has altered the atmosphere unusually rapidly since the dawn of the Industrial Revolution. One of the downsides is that most species are unable to adapt to such rapid change.
@@scott5565Yep. Historically when the climate has radically changed in short time periods due to perturbations like meteor impacts we refer to the result as mass-extinction events. Take note.
