[decimon]

Geocentric axial dipole ping.

[thefactor]

not bad for only being 6,000 years old.

[concentric circles]

The North American continent includes a Midcontinent Rift. This 1200-mile arc-shaped rift extends from Detroit, up through the middle of the Lower Peninsula, across Lake Superior, then down along the Minnesota/Wisconsin border, and across Iowa to eastern Nebraska. This tear in the continent allowed lava to reach the surface of the earth and accumulate in the rift valley as basalt rock 1.1 billion years ago.

[SunkenCiv]

By taking a closer look at the 1.1 billion-year-old volcanic rocks on the north shore of Lake Superior, the researchers have found that Earth's ancient magnetic field was a geocentric axial dipole -- essentially a large bar magnet centered in the core and aligned with the Earth's spin axis. Some earlier studies of these rocks had led other teams to conclude that the magnetic field of the ancient Earth had a far more complex structure -- some proposing the influence of four or even eight poles -- implying that present models of the supercontinents that relied on paleomagnetic data and an axial dipole assumption were wrong.

Thanks decimon.

· join · view topics · view or post blog · bookmark · post new topic · subscribe ·

[SunkenCiv]

· join list or digest · view topics · view or post blog · bookmark · post a topic · subscribe ·
	Gods Graves Glyphs	Thanks decimon. To all -- please ping me to other topics which are appropriate for the GGG list. GGG managers are SunkenCiv, StayAt HomeMother, and Ernest_at_the_Beach
·Dogpile · Archaeologica · ArchaeoBlog · Archaeology · Biblical Archaeology Society · · Discover · Nat Geographic · Texas AM Anthro News · Yahoo Anthro & Archaeo · Google · · The Archaeology Channel · Excerpt, or Link only? · cgk's list of ping lists ·

[GodGunsGuts]

101 evidences for a young age of the earth and the universe

[Towed_Jumper]

I wonder what Charles Hapgood would have to say about this.