Lithic fragment (geology)
http://dbpedia.org/resource/Lithic_fragment_(geology) an entity of type: Weapon
En pétrologie, les fragments lithiques sont des éclats de roches plus anciennes inclus dans une roche plus récente, généralement sédimentaire mais parfois issue d'un contexte volcanique (lors du remaniement d'un ancien dôme de lave par des coulées pyroclastiques, notamment). La taille des fragments lithiques est très variable, de quelques dizaines de micromètres à plusieurs mètres.
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Lithic fragments, or lithics, are pieces of other rocks that have been eroded down to sand size and now are sand grains in a sedimentary rock. They were first described and named (in their modern definitions) by Bill Dickinson in 1970. Lithic fragments can be derived from sedimentary, igneous or metamorphic rocks. A lithic fragment is defined using the Gazzi-Dickinson point-counting method and being in the sand-size fraction. Sand grains in sedimentary rocks that are fragments of larger rocks that are not identified using the Gazzi-Dickinson method are usually called rock fragments instead of lithic fragments. Sandstones rich in lithic fragments are called lithic sandstones.Lithic fragments can also be define as the breakdown of preexisting ,fine -to medium grained igneous . metamorphic an
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Fragment lithique
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Lithic fragment (geology)
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23946975
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1054238287
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En pétrologie, les fragments lithiques sont des éclats de roches plus anciennes inclus dans une roche plus récente, généralement sédimentaire mais parfois issue d'un contexte volcanique (lors du remaniement d'un ancien dôme de lave par des coulées pyroclastiques, notamment). La taille des fragments lithiques est très variable, de quelques dizaines de micromètres à plusieurs mètres.
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Lithic fragments, or lithics, are pieces of other rocks that have been eroded down to sand size and now are sand grains in a sedimentary rock. They were first described and named (in their modern definitions) by Bill Dickinson in 1970. Lithic fragments can be derived from sedimentary, igneous or metamorphic rocks. A lithic fragment is defined using the Gazzi-Dickinson point-counting method and being in the sand-size fraction. Sand grains in sedimentary rocks that are fragments of larger rocks that are not identified using the Gazzi-Dickinson method are usually called rock fragments instead of lithic fragments. Sandstones rich in lithic fragments are called lithic sandstones.Lithic fragments can also be define as the breakdown of preexisting ,fine -to medium grained igneous . metamorphic and sedimentary rocks results in sand -sized fragments..
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2902