The Farallon Islands off the coast of California are an example of continental fragments.Ĭontinental archipelagos, such as British Columbia’s Inside Passage, are islands that form close to the coast of a continent. The Florida Keys are an example of a coral cay archipelago, which form when ocean currents transport sediments that gradually build up on the reef surface.Ĭontinental fragments are archipelagos that have separated from a continental land mass due to the Earth’s tectonic movements. The islands of the Hawaiian archipelago, for example, were formed by a series of volcanic eruptions that began more than 80 million years ago and are still active today.Īrchipelagos can also form as a result of erosion, sedimentary deposits, rising sea level, and other geographic processes. Most archipelagos are formed when volcanoes erupt from the ocean floor these are called oceanic islands. Here are the same sentence fragments changed into complete sentences: Before we went to the mall. All of the above examples are missing words/ideas that are needed to make the sentences complete. Here are some examples: Before we went to the mall. The word “archipelago” comes from the medieval Italian word archi, meaning chief or principal, and the Greek word pelagus, meaning gulf, pool, or pond. A sentence fragment is an incomplete sentence. While the Gulf Archipelago and San Juan Islands are geologically related, they are not technically included in the same archipelago due to manmade geopolitical borders. The Gulf Archipelago off the Pacific Coast forms part of a larger archipelago that geologically includes Washington State’s San Juan Islands. Archipelagos are sometimes defined by political boundaries.
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