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In geology, accretion is a process by which material is added to a tectonic plate at a subduction zone, frequently on the edge of existing continental landmasses. The added material may be sediment, volcanic arcs , seamounts , oceanic crust or other igneous features.
In finance, the term accretion refers to a positive change in value following a transaction; it is applied in several contexts. When trading in bonds , accretion is the capital gain expected when a bond is bought at a discount to its par value , [ 1 ] given that, it is expected to mature at par .
Aside is a simplified example. A real-life accretion/dilution analysis may be much more complex if the deal is structured as cash-and-stock-for-stock, if preferred shares and dilutive instruments are involved, if debt and transaction fees are substantial, and so on.
A classic example is the Coast Range ophiolite of California, which is one of the most extensive ophiolite terranes in North America. This oceanic crust likely formed during the middle Jurassic Period, roughly 170 million years ago, in an extensional regime within either a back-arc or a forearc basin.
In astrophysics, accretion is the accumulation of particles into a massive object by gravitationally attracting more matter, typically gaseous matter, into an accretion disk. [ 1 ] [ 2 ] Most astronomical objects , such as galaxies , stars , and planets , are formed by accretion processes.
See also Accretion (finance). In particular, "accretion expense" is a phrase used in topic 410-20 of the United States GAAP Codification of Accounting Standards (SFAS 143), which describes the reporting of asset retirement obligations. This kind of liability typically has a long and predetermined life on a company's balance sheet, and hence, as ...
Accretion (coastal management), the process where coastal sediments return to the visible portion of the beach following storm erosion Accretion (geology) , the increase in size of a tectonic plate by addition of material along a convergent boundary
Accretion is the process of coastal sediment returning to the visible portion of a beach or foreshore after a submersion event. [1] A sustainable beach or foreshore often goes through a cycle of submersion during rough weather and later accretion during calmer periods.