8/4/2023 0 Comments Storyboard pro import videoWith exception of the few continental islands, the distribution of island types is broadly interpretable from the proximity of island-forming processes. Rationale for the spatial distributions of the various island attributes is drawn from the available literature and canvassed in the text. Continental islands, 18 of the 1779 islands examined, are not included in maps showing the distribution of island attributes and types. Most common are reef islands (36 %) and volcanic high islands (31 %), whereas the least common are composite low islands (1 %). These attributes yielded eight island types: volcanic high and low islands limestone high and low islands composite high and low islands reef (including all unconsolidated) islands and continental islands. It is intended to be valid at a regional scale and based on two attributes: five types of lithology (volcanic, limestone, composite, continental, surficial) and a distinction between high and low islands. The principal aim of the classification is to assess the spatial diversity of the geologic and geomorphic attributes of Pacific islands. Reefs lacking islands and short-lived (<20 years) transient islands are not included. An earth-science-based classification of islands within the Pacific Basin resulted from the preparation of a database describing the location, area, and type of 1779 islands, where island type is determined as a function of the prevailing lithology and maximum elevation of each island, with an island defined as a discrete landmass composed of a contiguous land area ≥1 ha (0.01 km 2) above mean high-water level.
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