bioherm


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Related to bioherm: biostrome

bioherm

[′bī·ō‚hərm]
(geology)
A circumscribed mass of rock exclusively or mainly constructed by marine sedimentary organisms such as corals, algae, and stromatoporoids. Also known as organic mound.
References in periodicals archive ?
Crotalocrinitids lived in high-energy environments with unstable and variable currents, a setting characteristic of very mobile water moving in varying directions, characteristic of the reef and bioherm conditions.
schmitti was collected from a wide sabellarian bioherm in Burrows Channel, Fidalgo Island (northern Puget Sound, Washington).
Grainy microhermal mounds are a kind of bioherm previously unrecognized in Jurassic rocks.
9 m thick succession, and Hedstroemia, found mainly in the bioherm facies, were observed under SEM for documentation of ultrastructures (Fig.
Small coral-stromatoporoid bioherms are locally present within the lower meter-scale Chicotte TRS, but were unable to keep up with relative sea-level rise and thus gave up.
Prolific growth occurs in clear protected areas in the lee of bioherms and in inter-biohermal sands near and below wave base.
However, true coral reefs are bioherms marked by long-term development, growth, and in Dominica by greater coral diversity than rocky habitats (Steiner 2003).
This area is known as the Oculina Bank, a series of reefs and high-relief bioherms (thickets of live coral, capping mounds of sediment and coral rubble, built upon an underlying lithified base structure) constructed by the scleractinian ivory tree coral (Oculina varicosa).
Some present day offshore bioherms found in the continental shelf are supported by these diapiric structures (Vernette, 1989b).
1991, Holocene sponge bioherms on the western Canadian continental shelf.