continental drift is the process that causes the continents to drift apart.
continental drift is the process that causes the continents to drift apart.
what process causes the continents to drift apart how?
continental drift
unfortunately, wegener provided no convincing mechanism for this drift, and his ideas were not generally accepted during his lifetime. arthur homes accepted wegener's theory and provided a mechanism: mantle convection, to cause the continents to move. however, it was not until after the second world war that new evidence started to accumulate that supported continental drift. there followed a period of 20 extremely exciting years where the theory of continental drift developed from being believed by a few to being the cornerstone of modern geology. beginning in 1947 research found new evidence about the ocean floor, and in 1960 bruce c. heezen published the concept of mid-ocean ridges.soon after this, robert s. dietz and harry h. hess proposed that the oceanic crust forms as the seafloor spreads apart along mid-ocean ridges in seafloor spreading. this was seen as confirmation of mantle convection and so the major stumbling block to the theory was removed. geophysical evidence suggested lateral motion of continents and that oceanic crust is younger than continental crust. this geophysical evidence also spurred the hypothesis of paleomagnetism, the record of the orientation of the earth's magnetic field recorded in magnetic minerals. british geophysicist s. k. runcorn suggested the concept of paleomagnetism from his finding that the continents had moved relative to the earth's magnetic poles. tuzo wilson, who was a promoter of the sea floor spreading hypothesis and continental drift from the very beginning, added the concept of transform faults to the model, completing the classes of fault types necessary to make the mobility of the plates on the globe function. a symposium on continental drift was held at the royal society of london in 1965 must be regarded as the official start of the acceptance of plate tectonics by the scientific community.the abstracts from the symposium are issued as blacket, bullard, runcorn;1965.in this symposium, edward bullard and co-workers showed with a computer calculation how the continents along both sides of the atlantic would best fit to close the ocean, which became known as the famous "bullard's fit". by the late 1960s the weight of the evidence available saw continental drift as the generally accepted theory.
history of geology
when two worlds drift apart









































"when two worlds drift apart" is a song by cliff richard from his album "every face tells a story" and the third single from the album. it was released as a single in 1977 reaching number 46 on the uk singles chart. in south africa it reached number 19.
when two worlds drift apart