stromatolite

stro·mat·o·lite

S0815100 (strō-măt′l-īt′)n. A usually rounded or columnar sedimentary structure consisting of alternating layers of carbonate or silicate sediment and fossilized microbial mats, produced over geologic time by the trapping, binding, or precipitating of minerals by groups of microorganisms, primarily cyanobacteria.

[Late Latin strōma, strōmat-, covering; see stroma + -lite.]

stro·mat′o·lit′ic (-măt′l-ĭt′ĭk) adj.

stromatolite

(strəʊˈmætəˌlaɪt) n (Palaeontology) a rocky mass consisting of layers of calcareous material and sediment formed by the prolific growth of cyanobacteria: such structures date back to Precambrian times[C20: from Greek, from strōma covering + -lite] stromatolitic adj

stro•mat•o•lite

(stroʊˈmæt lˌaɪt)

n. a laminated calcareous fossil structure built by marine algae and having a rounded or columnar form. [< German Stromatolith (1908) < New Latin stromat-, s. of stroma stroma + -o- -o- + German -lith -lith; see -lite] stro•mat`o•lit′ic (-ˈɪt ɪk) adj.

Translations

estromatolito

stromatolite

stromatolite,

layered structures produced by the binding together of sediments by a thin layer of cyanobacteriacyanobacteria
or blue-green algae,
photosynthetic bacteria that contain chlorophyll. For many years they were classified in the plant kingdom along with algae, but discoveries made possible by the electron microscope and new biochemical techniques have shown them to be
..... Click the link for more information. . The layers, which are deposited very slowly, gradually produce rounded or hummocklike formations. Stromatolite fossils are common in Precambrian rocks, and the cyanobacteria associated with them are believed to have been a major contribubutor to the increasing oxygen of the early earth. Stromatolites now are found primarily in environments where high salt levels discourage animals from eating the cyanobacteria.

Stromatolite

a dense, layered structure that forms in limestones and dolomites as a result of the presence of colonies of blue-green and other algae. Stromatolites reach several meters in length and 1–2 m in height. They have been traced back to the Proterozoic; Upper Proterozoic and Lower Paleozoic fossils are particularly common. The formation of stromatolites occurs in warm, shallow waters with elevated or decreased salinity. The various morphological types, which evolved during the course of geological time, are used for the biostratigraphic analysis of Upper Proterozoic deposits, in which remains of other organisms are extremely rare.

stromatolite

[strə′mad·əl‚īt] (geology) A structure in calcareous rocks consisting of concentrically laminated masses of calcium carbonate and calcium-magnesium carbonate which are believed to be of calcareous algal origin; these structures are irregular to columnar and hemispheroidal in shape, and range from 1 millimeter to many meters in thickness. Also known as callenia.

stromatolite

(strō-măt′l-īt′)n. A usually rounded or columnar sedimentary structure consisting of alternating layers of carbonate or silicate sediment and fossilized microbial mats, produced over geologic time by the trapping, binding, or precipitating of minerals by groups of microorganisms, primarily cyanobacteria.

stro·mat′o·lit′ic (-măt′l-ĭt′ĭk) adj.

stromatolite

a rock-like mound, often found in fossil form (which can be over 3000 million years old), created by CYANOBACTERIA. It is possible that the fossil microbes within the stromatolite were able to produce oxygen from photosynthesis. If so, they are likely to have had a profound effect on the course of evolution of living forms.

单词	stromatolite
释义	stromatolite stro·mat·o·lite S0815100 (strō-măt′l-īt′)n. A usually rounded or columnar sedimentary structure consisting of alternating layers of carbonate or silicate sediment and fossilized microbial mats, produced over geologic time by the trapping, binding, or precipitating of minerals by groups of microorganisms, primarily cyanobacteria. [Late Latin strōma, strōmat-, covering; see stroma + -lite.] stro·mat′o·lit′ic (-măt′l-ĭt′ĭk) adj. stromatolite (strəʊˈmætəˌlaɪt) n (Palaeontology) a rocky mass consisting of layers of calcareous material and sediment formed by the prolific growth of cyanobacteria: such structures date back to Precambrian times[C20: from Greek, from strōma covering + -lite] stromatolitic adj stro•mat•o•lite (stroʊˈmæt lˌaɪt) n. a laminated calcareous fossil structure built by marine algae and having a rounded or columnar form. [< German Stromatolith (1908) < New Latin stromat-, s. of stroma stroma + -o- -o- + German -lith -lith; see -lite] stro•mat`o•lit′ic (-ˈɪt ɪk) adj. Translations estromatolito stromatolite stromatolite, layered structures produced by the binding together of sediments by a thin layer of cyanobacteriacyanobacteria or blue-green algae, photosynthetic bacteria that contain chlorophyll. For many years they were classified in the plant kingdom along with algae, but discoveries made possible by the electron microscope and new biochemical techniques have shown them to be ..... Click the link for more information. . The layers, which are deposited very slowly, gradually produce rounded or hummocklike formations. Stromatolite fossils are common in Precambrian rocks, and the cyanobacteria associated with them are believed to have been a major contribubutor to the increasing oxygen of the early earth. Stromatolites now are found primarily in environments where high salt levels discourage animals from eating the cyanobacteria. Stromatolite a dense, layered structure that forms in limestones and dolomites as a result of the presence of colonies of blue-green and other algae. Stromatolites reach several meters in length and 1–2 m in height. They have been traced back to the Proterozoic; Upper Proterozoic and Lower Paleozoic fossils are particularly common. The formation of stromatolites occurs in warm, shallow waters with elevated or decreased salinity. The various morphological types, which evolved during the course of geological time, are used for the biostratigraphic analysis of Upper Proterozoic deposits, in which remains of other organisms are extremely rare. stromatolite [strə′mad·əl‚īt] (geology) A structure in calcareous rocks consisting of concentrically laminated masses of calcium carbonate and calcium-magnesium carbonate which are believed to be of calcareous algal origin; these structures are irregular to columnar and hemispheroidal in shape, and range from 1 millimeter to many meters in thickness. Also known as callenia. stromatolite stromatolite (strō-măt′l-īt′)n. A usually rounded or columnar sedimentary structure consisting of alternating layers of carbonate or silicate sediment and fossilized microbial mats, produced over geologic time by the trapping, binding, or precipitating of minerals by groups of microorganisms, primarily cyanobacteria. stro·mat′o·lit′ic (-măt′l-ĭt′ĭk) adj. stromatolite a rock-like mound, often found in fossil form (which can be over 3000 million years old), created by CYANOBACTERIA. It is possible that the fossil microbes within the stromatolite were able to produce oxygen from photosynthesis. If so, they are likely to have had a profound effect on the course of evolution of living forms.
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