Well, in consideration of the earths crust and lithosphere, rises and events of mass flooding due to changes in the contour or depths of surface crust,lithoshere,plates ect....
the main cause of variant topography, is the effects of pole reversals, where in the events of magnetic pole reversals the crust and atmosphere of earth collaspe. This event of collaspe is seen on the Sun during the first phases of magnetic pole reversals on the sun. In general the sun diameter collaspes by 10%, the main magnetic pole splits into various pieces and migrates to the equator, during such time the sun cools on its surface as the cold vaccum of space engulfs the surface.
This same event on earth occurs during earths pole reversals where the earths crust collaspes about 10%. 10% of the earths diameter is about 790 miles(800), divided in the the radius this is about 400 miles, the atmosphere of earth retains the majority of the collaspe, the collaspe of the crust is equal to the increase in gravity per unit square area(surface) or about a quater of the total collaspe at about 100 miles in each hemisphere. This collaspe of the crust is distributed to various dpeths of the internal earth, where there exist vacant cavities in the earths curst like the rings of saturn, but are more like orbitals that encompass the internal area( vacant, empty layers) that normally act to hold gases and magma flows, these areas act as barriers that gases and magam must gain veloicty to breech. at various times the upper and lower interiors breech this vacant barrier and friction contact cause the creation of magma, ect.... whitin the earths crust there are several of these vacant orbitals at various depths, the largest located about 1,500 miles in depth is about 5 miles to 10 mile in vertical width, from here the barriers get smaller as they approach the earths surface, with the smallest actual barrier about 1,500 ft in vertical width,being the main carrier of surface magma, smaller barriers exist much closer to the surface but are very frequently breeched and act as cavities for water,and other fluids,gases ect... the same reduction in size of these barriers beigns at the 1,500 mile make and inward to the center of earth having the same organiztion, relavant to more gases at the distinct depth simluar to the earths surface cavites. at center the earth is hollow surrounded by cold gases that generate the magnetic feild.
These barries of the internal earth recieve the remaining distribution of the collaspe, leaving the actuall surface of the earth with a 40 to 20 mile collaspe effect that shapes the earths surface. this 40 to 20 mile collaspe of the crust is distributed across the surface of the earth causing various degrees of collaspes, reduceing in depth of the collaspe from the intial collapse zone or area and traveling west ward or east ward. The ital collaspe travels in a spike from each of the poles to the equator, resulting a graded collaspe either east of west. The origin of the spike will collaspe some 40 miles grading to 20 miles
around the equator, and then travel west ward or east with a grading effect from 20miles to 3 miles in collaspe.
The effect of collaspe causes great friction and then massive magma is produced, resulting in many volcanic eruptions, super volcanos,(the effect of internal degassing results releasing masive gaeous carbons,hydrogen,helium,oxyegn ect...) heavyier metals are brought to surface such as iridium ect.. . land masses are formed.
At this point during a magnetic pole reversal there is no major magentic field, only remiant feilds. In the return of the magnetic feild the earth has taken on exterior hydrogen and helium in the upper atmosphere and the earths crust begins to reexspand, with the addition of other forces as well, this creates various areas of rexspansion at different rates of rexspansion.
The collaspe of the crust creates deeper ocean basins, and exsposes new surface that will exist as habitalbe or walking land surfaces. As the crust reexspands the oceans sea level rises, the land and ocean balance out, plates slip ect....
The most prominet effect of this collaspe can be seen in the marina trench of the pacific ocean, which exstends from the asian region of the equator to the alaska interior coast and as well seen in the west coast of brazil,being prominet in exstent to the equator and beyond. the grading of the pacific floor is a very classic example of collaspe.
It is clear that the earth was much more covered in water untill the last collaspe of the earths crust, which deeping the ocean basins exsposed more habitable land surface that we take for granet today.
This type of collaspe in its grading effect is why we have a record of the magnetic pole reversal, indicated in the ocean crust, and a more spratic, random record in land samples.
DWAYNE D.L.RABON