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It’s just amazing that fossils even exist. Thanks, random natural events and processes for showing us what the freakin’ distant past looked like!
by webwielder2 2y ago
It’s just amazing that fossils even exist. Thanks, random natural events and processes for showing us what the freakin’ distant past looked like!
- imoverclocked 2y agoWe even have a record of ancient Earth’s magnetic fields :) The geological record is pretty amazing indeed!
- jjtheblunt 2y agoHow is magnetic field history figured out?
- BWStearns 2y agoBasalt on the ocean floor records the magnetic field of the earth from when it cooled. Since it radiates out from midoceanic rifts and the rate of its creation is known, we can use it as a diary of the magnetic field. Iirc we first figured it out during WW2 doing magnetic bathyometry to help ships navigate.
- CalRobert 2y agohttps://en.m.wikipedia.org/wiki/Remanence https://en.m.wikipedia.org/wiki/Remanence can get you started! I did horribly in this lab session in college but it was still fun.
- ChrisMarshallNY 2y agoThere must have been a whole shitload of the little bugs. We've found so many of their fossils, that they are a commodity. For each fossil, there's probably a thousand individuals that never got rocked.