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lithification |
Also found in: Wikipedia, Hutchinson | 0.01 sec. |
lithificationComplex process whereby loose grains of sediment are converted into rock. Lithification may occur at the time a sediment is deposited or later. Cementation is one of the main processes involved, particularly for sandstones and conglomerates. In addition, reactions take place within a sediment between various minerals and between minerals and the fluids trapped in the pores; these reactions may form new minerals or add to others already present in the sediment. lithification [‚lith·ə·fə′kā·shən] (geology) Conversion of a newly deposited sediment into an indurated rock. Also known as lithifaction. Compositional change of coal to bituminous shale or other rock. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The surrounding sediment was partly lithified just below the seafloor surface, but burrows remained unlithifled because their fill material had different porosity and permeability (Coniglio, 1999). Recent archaeological finds of both historic and aboriginal cultural artifacts have been found associated with these well lithified Miocene exposures. The Earth's oldest glacial rocks (mid-Proterozoic) were reported from Gowganda in northern Ontario (Coleman, 1907) and in 1906 Albrecht Penck introduced the term tillite for ancient lithified tills. |
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