Virtual Geomagnetic Pole tools
Forward and inverse paleomagnetic calculations
1. Direction → VGP
Calculate a VGP from site coordinates and a paleomagnetic direction using a geocentric dipole.
tan(I) = 2 cot(p)→p = atan2(2, tan(I))
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Recommended columns
ID, Slat, Slong, D, ICalculated VGPs
No VGPs calculated yet.
| # | ID | Slat | Slong | D | I | p | Plat | Plong |
|---|
VGP projections
Global equal-area Mollweide projection
Polar azimuthal projection
2. VGP → Direction
Calculate the paleomagnetic direction expected at a site from the VGP coordinates.
Calculated directions
No directions calculated yet.
| # | ID | Slat | Slong | Plat | Plong | p | D | I |
|---|
Equal-area stereographic projection (Schmidt net)
Positive inclinations (down) are filled; negative inclinations (up) are open.