Posted on 12/11/2021 10:51:10 PM PST by SunkenCiv
The researchers explain that instruments for measuring the strength of the Earth's magnetic field were first invented only approximately 200 years ago. In order to examine the history of the field during earlier periods, science is helped by archaeological and geological materials that recorded the properties of the field when they were heated to high temperatures. The magnetic information remains "frozen" (forever or until another heating event) within tiny crystals of ferromagnetic minerals, from which it can be extracted using a series of experiments in the magnetics laboratory. Basalt from volcanic eruptions or ceramics fired in a kiln are frequent materials used for these types of experiments. The great advantage in using archaeological materials as opposed to geological is the time resolution: While in geology dating is on the scale of thousands years at best, in archaeology the artifacts and the magnetic field that they have recorded can be dated at a resolution of hundreds and sometimes even tens of years (and in specific cases, such as a known destruction event, even give an exact date). The obvious disadvantage of archaeology is the young age of the relevant artifacts: Ceramics, which have been used for this purpose up until now, were only invented 8,500 years ago.
(Excerpt) Read more at eurekalert.org ...
“The archaeological artifacts demonstrated that at a certain stage during the Neolithic period, the field became very weak (among the weakest values ever recorded for the last 10,000 years), but recovered and strengthened within a relatively short amount of time.”
This could explain the long asked question of why many went underground and built dolmens around that time. Might have been only able to hunt for a few hours in the morning and evening and had to hide from the sun during the day.
When coupled with all of the other things that protect and sustain our existence - the properties of our atmosphere, the salinity of our oceans, the orbit stabilizing effects of our moon, our precise orbit around our star - who can doubt that our existence here is no accident?
God has a very precise design process.
interesting
It’s got a good beat and you can dance to it.......................
The call of Cthulhu....................
Wabash Cannonball. Pure iron, whole darned thing got magnetized.
It is my belief that the iron deposits of the Central Alabama area around Bessemer and Birmingham are actually the remains of an iron meteorite from before the age of the dinosaurs.
If you look at the mountains around there, they are curved around like the wall of a crater of a meteor that came in from the northeast..........
As much as I like impacts from space (from a safe distance), that sounds like it’s probably volcanic.
https://en.wikipedia.org/wiki/Wetumpka_crater
Notice the crescent shaped area that extends across teh whoel state and into Mississippi.......................
Ooh, nice! That could easily be an impact crater, but billions of years old. Because the Earth has an atmosphere, hydrologic cycle, and biosphere, erosion damages impact craters or buries them.
Oldest known is in Australia:
https://www.nature.com/articles/s41467-019-13985-7
It would also mean the the Appalachian Mountains are actually the side of a trench that the meteor created when it slid into the Earth. There probably wasn’t much of an atmosphere at the time. The Earth was probably still hot as heck! The circular crescent is no accident of nature. It would most likely be the oldest identifiable crater on earth.............
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