bioherm

biohermal, adj.
/buy"oh herrm'/, n. Geol.
a carbonate rock formation, in the form of an ancient reef or hummock, consisting of the fossilized remains of corals, algae, mollusks, and other sedentary marine life, and commonly surrounded by rock of a different lithology.
[1925-30; BIO- + -herm < Gk hérma sunken rock, reef]

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      ancient organic reef of moundlike form built by a variety of marine invertebrates, including corals, echinoderms, gastropods, mollusks, and others; fossil calcareous algae are prominent in some bioherms. A structure built by similar organisms that is bedded but not moundlike is called a biostrome. Bioherms and biostromes occur in sedimentary rock strata of all geological ages, providing definitive information on paleoenvironments in the vicinity of their occurrence.

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Universalium. 2010.

Look at other dictionaries:

  • bioherm — ☆ bioherm [bī′ō hʉrm΄ ] n. [< BIO + Gr herma, a reef] 1. a reeflike mass or mound of limestone built by sedentary organisms, as corals: cf. BIOSTROME 2. CORAL REEF …   English World dictionary

  • Bioherm — Unter einem Bioherm (v. griech. βιός, bios, „Leben“ und ἕρμα, herma, „Felsen“, „Stein“, „Ballast“, „Klippe“, „Riff“) versteht man biogene Riffe mit Höhenwachstum. Die Riffe werden von koloniebildenden Organismen (z. B. Korallen, Schwämmen,… …   Deutsch Wikipedia

  • bioherm — n. [Gr. bios, life; herma, mound] A body of rock composed largely of sedentary organisms such as corals and mollusks …   Dictionary of invertebrate zoology

  • bioherm — noun A mass of rock constructed from the remains of marine organisms such as coral or algae …   Wiktionary

  • Bioherm — Bio|herm das; s, e <zu ↑bio... u. gr. hérma »Sandbank, Riff«, eigtl. »Hügel«> von Organismen aufgebautes, kuppelförmig aus dem Meer aufragendes Riff …   Das große Fremdwörterbuch

  • bioherm — bi·o·herm …   English syllables

  • bioherm — …   Useful english dictionary

  • Biostrom — Unter einem Bioherm (v. griech. βιός, bios, „Leben“ und ἕρμα, herma, „Felsen“, „Stein“, „Ballast“, „Klippe“, „Riff“) versteht man biogene Riffe mit Höhenwachstum. Die Riffe werden von koloniebildenden Organismen (z.B. Korallen, Schwämmen, Algen,… …   Deutsch Wikipedia

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  • Stromatolite — Stromatolites (from Greek στρώμα, strōma , mattress, bed, stratum, and λιθος, lithos , rock) are layered accretionary structures formed in shallow water by the trapping, binding, and cementation of sedimentary grains by biofilms of microorganisms …   Wikipedia

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