Author: Steingrimur Thorbjarnarson

Convection of the mantle is too simple to discuss. Heat from the core is carried upwards with magma flow. And it must circulate, up and down.

But the 3D model is harder to explain. The effect of rotation forces the convection to adhere to the plane of rotation. A fraction vector of the flow is also horizontal. Here on the drawing the path of the division line between the upwelling convection cells of lower mantle, and the relevant backflow are shown. It is of course also circulating around the globe.

Looking at this map, you can see how Hawaii, Iceland, Indonesia, Japan and New Zealand are all a part of this main belt of magma flow. I include the estuaries two main rivers, Amazon and Nile. Take a look at equator, as land mass and ocean always seem to be divided where the magma division lines cross equator. And all the main ocean ridges are also found where the magma division lines cross equator. What else do we need to find? Well, remember that this bending line is calculated. It adheres to the Coriolis force always swaying in the same way mathematically for each latitude, with slow flow subject to no oscillation, with the same diameter as the radius of Earth as the basic length scale found along 32nd parallel where the flow is directly north-south.

Can you trace something more? I would like to see that, because I am interested in this 🙂

Last post was about Greenland, Iceland and Norway. But here we deal with the mainland of Canada, Greenland and Iceland. In this case the story is repeated. The coast of mainland Canada is exactly 30° apart from the coast of Greenland along 66°N.

This is one of so many examples of how the magma currents work. Remember that the position of land is constantly changing. And we humans try to think about one thing at a time, just to be able to cope with our work. Nature in general is not like that. Nature takes many factors into account simultanously. So slowly, slowly, the distiribution of land is changed, while still showing resemblance to the convection rolls below. Even the most brilliant minds can not really cope with it 🙂

As tectonic drift is due to the flow of magma, the pattern of magma flow affects the arrangement of tectonic plates. A manifestation of such arrangement is found along the latitude of 66°N. There are exactly 30° in between the west coast of Iceland and the west coast of Greenland along that latitude. Also, from the Icelandic coast to the abyss of Norway there are also 30° along 66°N.

Coincidence? Sorry, no way! Not to be understood? Not acceptable, because we are obliged to understand things like that, screaming and kicking!

Looking a bit more carefully, you will see that there are 6° along 66°N from the Norwegian abyss to the Norwegian coast. Also, from the west coast point of Iceland, there are exactly 6° to the central magma division line of lower mantle. That logically means that from the central line to the coast of Norway along 66°N there ara exactly 30°. That means the coast of Norway at that point is directly above the main division line of large lower mantle cells (as each of them spans 30° from east to west).

One out of endless mysteries of magic magma!

An earthquake fault is responsible for the geothermal heat of Hveragerði. This is how they bake bread in the Geothermal Park:

The same fault is under the Service Center of Hveragerði, where the exhibition of Magic Magma is found:

The most powerful hot spring in the world is found in a peaceful area of Borgarfjörður.

The explanation? Underneath the Reykjanes Ridge foundations are still found!