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Isthmus and land bridge are related terms, with isthmus having a broader meaning. A land bridge is an isthmus connecting Earth's major land masses. The term land bridge is usually used in biogeology to describe land connections that used to exist between continents at various times and were important for the migration of people and various ...
This list of isthmuses is an appendix to the article isthmus.The list is sorted by the region of the world in which the isthmus is located. An isthmus (/ ˈ ɪ s θ m ə s / or / ˈ ɪ s m ə s /; plural: isthmuses, or occasionally isthmi; from Ancient Greek: ἰσθμός, romanized: isthmos, lit.
Also narrow. A land or water passage that is confined or restricted by its narrow breadth, often a strait or a water gap. nation A stable community of people formed on the basis of a common geographic territory, language, economy, ethnicity, or psychological make-up as manifested in a common culture. national mapping agency A governmental agency which manages, produces, and publishes ...
Isthmus – Narrow strip of land connecting two larger land areas; Lagoon – Shallow body of water separated from a larger one by a narrow landform; Machair – Fertile low-lying grassy plain; Marine terrace – Emergent coastal landform; Mid-ocean ridge – Basaltic underwater mountain system formed by plate tectonic spreading
The Isthmus of Panama is a land bridge whose appearance 3 million years ago enabled the Great American Biotic Interchange, in which animals and plants from the north colonized the south, and vice versa.
Historically in Greco-Roman geography, "Africa" meant Ancient Libya, and its eastern extent was taken to be around Marmarica, at the Catabathmus Magnus. This was not considered to be a continent. As wider knowledge of geography developed, the shape of the African landmass (and Egypt's "natural" inclusion in that landmass) became apparent.
Tombolo near Karystos, Euboea, Greece Tombolo contrasted with other coastal landforms.. A tombolo is a sandy or shingle isthmus.A tombolo, from the Italian tombolo, meaning 'pillow' or 'cushion', and sometimes translated incorrectly as ayre (an ayre is a shingle beach of any kind), is a deposition landform by which an island becomes attached to the mainland by a narrow piece of land such as a ...
A tombolo is a bar that forms an isthmus between an island or offshore rock and a mainland shore. In places of reentrance along a coastline (such as inlets, coves, rias, and bays), sediments carried by a longshore current will fall out where the current dissipates, forming a spit. An area of water isolated behind a large bar is called a lagoon.