submainland

Submainland is a term used in geography to describe a large landmass that is smaller than a continent but significantly larger than an island. It is a concept that lies on a spectrum between these two well-defined geographical features. The distinction between a submainland and a very large island can be subjective and depends on various factors, including geological formation, size, and perceived continental significance.

Geologically, submainlands may have formed as continental fragments, been uplifted from the seabed, or represent areas that have been isolated from larger continents for extended periods. Unlike true continents, they typically lack the distinct geological and structural characteristics associated with continental crust. Their size is a primary differentiating factor, with no universally agreed-upon minimum or maximum dimensions.

Examples often cited in discussions of submainlands include Greenland, Madagascar, and New Guinea. These landmasses are extensive enough to possess diverse ecosystems and significant populations, yet they are not considered continents in their own right. The classification can also be influenced by historical and cultural perspectives, where political or economic considerations might contribute to the designation. The term "submainland" is not as rigidly defined or as commonly used as "continent" or "island" and often arises in comparative geographical discussions.