Kachemak Bay, Alaska: An Exploration of People and Place

Where are We?
Who are We?
What are the Dynamic Forces that Shape Our Place?
Volcanoes
Tides, Winds, Weather
Earthquakes
Geology
Glaciers
How Have We Survived?
What are the Challenges of Living Here?
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Up They Came Photo Gallery

Radiolarian Chert formation
Radiolarian Chert
© Janet R. Klein

Tectonic Taffy

As the front of the Kenai Mountains formed, it acted as a gigantic snowplow. Thin layers from the oceanic plate were scraped away and folded up like ribbons of taffy to form the base of the overlying mountains. This distinctive radiolarian or banded chert forms the cliffs along the water's edge of Kachemak Bay's south shore.

Pillow Basalt
Pillow Basalt
© Janet R. Klein

Bubbling Magma

A line of rocks and islands near Kachemak Bay's south shore formed when magma infusions deep within the earth bulged upward between the Farallon and North American Plates. The resulting huge pillows of basalt are visible at Gull Island, Sixty Foot Rock, and Yukon and surrounding islands.

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