Principles dating sedimentary rocks

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In the late 19th century the Austrian geologist proposed that large ancient continents had been composed of several of the present-day smaller ones.

According to this hypothesis, portions of a single enormous southern continent—designated Gondwanaland (or )—foundered to create the Atlantic and Indian oceans.

His analysis of tectonic features foreshadowed in many ways modern thought regarding plate collisions.

of the Atlantic coastlines, explicitly presented the concept of continental drift.

With a surface area of 26.7 million hectares, each New Zealander has 7.0 ha as living space (USA= 940Mha/290M= 3.2 ha each; Holland= 0.2).