Marine Terraces of the Californian Coastline-Newport Tidalpools


Joined December 2008

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Artist's Description

These terraces are characteristic of exposed, windward coast where waves pound against the shore, cutting a vertical cliff face over time. The surging ocean then planes smooth the sea floor at the base of the cliff, forming the flat step of the submerged terrace. The existence of several terrace levels at one coastal site is evidence of the long-term geologic processes affecting the California coast. Between one and two million years ago the oldest and highest terraces were uplifted by the same mountain-building process that created the Coast Ranges. In addition to the incremental rise of the coast, the subsequent advance and retreat of Ice Age glaciers caused sea level to alternately drop and rise, and sequences of terraces were cut by waves and currents in the intervening periods of sea level stability.

The most extensive marine terraces along the California coast are exposed along the sides of the Palos Verdes Hills in Los Angeles County, where a series of thirteen terraces rises to 1,300 feet above sea level.

California’s State rock is Serpentine. It is apple-green and Black in colour and is offer mottled with light and dark colours as you can see in the rocks here. Due to shifting of the tetonic plates in regards to the Andres fault, supplies the stripe effect and the version Geological stages of formation.

Photo taken by Canon Rebel EOS 450d xsi

Artwork Comments

  • Charmiene Maxwell-Batten
  • Bellavista2
  • Bellavista2
  • barnsis
  • Susan Littlefield
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