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Geology√

1974 Archival description results for Geology√

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The Alaskan-Siberian land bridge

The Alaskan-Siberian land bridge wich functioned as a migration route along which an interchange of animals took place between Asia and North America during the Pleistocene. (Zumberge, 1958, p. 360).

The bedrock formations of Iceland

The bedrock formations of Iceland. Palagonite Formation = Moberg Formation Older Series = Old Grey Basalts. Younger Series = Moberg Mountains and Young Grey Basalts

The Bering Straits between North America and Asia

The Bering Straits between North America and Asia, showing the shallow, submerged shelf that would become land with a drop of sea level of only 150 feet. During the Ice Age and at various times during the Tertiary Period, this land bridge was open to migrations between the Americas and Eurasia. In many ways, it is the most important land bridge on the earth. Land areas are in grey, water over 150 feet is in black and water less than 150 feet deep in white. (Stokes, 1960, p. 405).

Results 1756 to 1770 of 1974

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