Continental drift orogeny at the boundaries of convection cells. By 1967, barely two decades after discovery of the mid-oceanic rifts, and a decade after discovery of the striping, plate tectonics had become axiomatic to modern geophysics. In addition, Marie Tharp, in collaboration with Bruce Heezen, (who initially ridiculed Marie's observations that her maps confirmed continental drift theory), provided essential corroboration, using her skills in cartography and seismographic data, to confirm the theory. Evidence for the movement of continents on tectonic plates is now extensive. Similar plant and animal fossils are found around the shores of different continents, suggesting that they were once
The Defence of Duffer's Drift a lightly armoured small group of "Redeemers" against attack from a larger force, that would not tie down many "Redeemer" troops un-necessarily. The Defence of Duffer's Drift The Defence of Duffer's Drift is a short 1904 book by Major General Sir Ernest Dunlop Swinton. It purports to be a series of six dreams by "Lieutenant Backsight Forethought" about the defence of a river crossing in the Boer War. The infantry tactics in the early dreams are disastrous, but each time BF learns something until in the final defence he is successful. "The Defence of Duffer's Drift" was published in 1904