authigenic


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authigenic

(ˌɔːθɪˈdʒɛnɪk)
adj
(Geological Science) (of minerals) having crystallized in a sediment during or after deposition
[C19: from German authigene from Greek authigenēs native + -ic]
References in periodicals archive ?
Barite fronts in continental margin sediments: a new look at barium remobilization in the zone of sulfate reduction and formation of heavy barites in authigenic fronts.
According to the present study, the carriers of the remanent magnetization are (i) allogenic and synsedimentary and/or early diagenetic authigenic ironbearing minerals of the primary sedimentary siliciclastic and carbonate rocks and (u) alteration products of primary minerals or new authigenic minerals formed during latediagenetic, hydrothermal, or weathering processes.
Kukersite contains 10-60% organic matter, carbonate and siliciclastic terrigenous component, and accessory authigenic minerals, such as pyrite (Bauert & Kattai 1997).
Ilmjarv shows that there was intensive authigenic carbonate deposition since the Boreal up to the Sub-Atlantic.
Moreover, elemental mapping demonstrates the fundamental role of authigenic mineralization in the preservation and replication of faunal remains in the presence of clay minerals [12].
The occurrence of authigenic zeolites suggests deposition in hypersaline lacustrine waters in closed basins.
The precision of the analysis of the K-Na sanidine composition is [+ or -] 1% in favourable cases (low intensity of authigenic feldspar reflection, no kaolinite, high intensity of the magmatic sanidine reflection) and [+ or -] 2% in less favourable cases.
Presence of authigenic zeolites and preservation of the organic matter reveal the influence of hypersaline conditions during formation in closed basins during the Paleocene-Eocene and Upper Miocene Epochs [29].