Saturday, May 14, 2016, 4:00 pm - 6:00 pm
575 Osgood Street
North Andover, MA
Lecture 21: Fiordland National Park – Majestic Fjords
In the last lecture, we discussed the power of glaciers, carrying a continuous stream of ice and rock from the tops of mountain ranges down to the base, often the sea, as at Columbia Glacier in Alaska. In this lecture, we’ll look at what’s left over when the ice is gone. For this, we’ll visit Fiordland National Park, on the south island of New Zealand, a classic and spectacular example of glacial erosion. The park covers a large region with many fjords here called sounds, and in this lecture we’ll look at three famous ones, Dusky Sound, Doubtful Sound and Milford Sound.
Lecture 22: Rock of Gibraltar – Catastrophic Floods
In the last lecture, we looked at tall rocks that rise up out of the sea at the stunning fjords of Fiordland National Park in New Zealand. In this lecture, we’ll visit another rock that rises out of the sea — it’s not as tall, but perhaps it’s better known — the Rock of Gibraltar. Primarily limestone and shale, this rock is connected to Spain by a long, flat stretch of land called a tombolo. The rock of Gibraltar is not large by the scale of some of the places we’ve visited – say, the giant mountains in the Himalayas or the Andes – but it is distinctive, and it plays an important role in the history of early humans.
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