5 The belief that continents have not always been fixed in their present positions was
suspected long before the 20^th
century; this notion was first suggested as early as 1596 by
the Dutch map maker Abraham Ortelius in his work Thesaurus Geographicus, Ortelius
suggested that the Americas were "torn away from Europe and Africa. by earthquakes and
floods' and went on to say: "The vestiges of the rupture reveal themselves, if someone
brings forward a map of the world and considers carefully the coasts of the three
[continents]: Ortelius "dea surfaced again in the 19^th century. However, it was not until
1912 that the idea of moving continents was seriously considered as a full-blown scientific
theory-called continental drift -Introduced in two articles published by a 32 year-old
German meteorologist named Allred Lother Wegener. He contended that, around 200
million years ago, the supercontinent Pangaea began to split apart. Alexander Du Toit,
Professor of Geology at Witwatersrand University and one of Wegener's staunchest
supporters, proposed that Pangaes first broke into two large continental landmasses.
Laurasia in the northern hemisphere and Gondwanaland in the southern hemisphere.
Laurasla and Gondwanaland then continued to break apart Into the various smaller
continents that exist today.
Why do the authors include information about the Dutch map maker, Ortelius,in
paragraph 5?
to suggest that most intellectuals at the time agreed with Wegener's theory of
continental drift
.
to emphasize that Ortelius's geographical observations lent support to Wegener's
theory of continental drift
to discredit the significance of Wegener's contributions to the theory of continental
drift
to confirm that Ortelius's map provided the evidence that Wegener used to prove his
theory of continental drift