| 释义 |
diagenesis|daɪəˈdʒɛnɪsɪs|
[mod. f. Gr. δια- across + γένεσις generation, origination: -genesis.]
Transformation by dissolution and recombination of elements. Hence diageˈnetic a., of or pertaining to diagenesis.
1886T. S. Hunt Mineral Physiol. & Physiogr. 173 The reactions..resulting not only in the conversion of amorphous into crystalline bodies, but in the breaking up of old combinations, as well as in the union of unlike matters mechanically mingled to form new crystalline species, are instructive examples of what Gümbel has termed diagenesis. Ibid., An instructive phase in this diagenetic process is that of the gradual conversion of smaller crystalline grains or crystals into larger ones. 1965New Scientist 30 Dec. 893 Diagenesis—the chemical alteration that takes place in sediments, turning them into rocks for posterity. 1965G. J. Williams Econ. Geol. N.Z. vi. 65/2 Barium and strontium were concentrated by lowgrade diagenesis during the consolidation of 28,000 ft. of Triassic sediments. |