The relation between the Terra rossa and the carbonate-free residue of the underlying limestones and dolostones in Apulia, Italy

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Authors:Moresi, M.; Mongelli, G.
Author Affiliations:Primary:
Univ. Bari, Dip. Geomineral., Bari, Italy
Volume Title:Special issue devoted to some papers read at the sixth meeting of the European Clay Groups
Volume Authors:Bain, D. C., editor
Source:Clay Minerals, 23(4), p.439-446; Euroclay 87 conference ; sixth meeting of the European Clay Groups, Seville, Spain, Sept. 7-10, 1987, edited by D. C. Bain. Publisher: Mineralogical Society, London, United Kingdom. ISSN: 0009-8558
Publication Date:1988
Note:In English. 25 refs.; illus. incl. 4 tables
Summary:A statistical comparison has been made of chemical data for terra rossa and carbonate-free residues of Cretaceous limestones and dolostones in Apulia in order to evaluate the hypothesis that the terra rossa is a product of weathering of the underlying carbonate rocks. It has been shown that the differences in chemical composition between the residue of the carbonate rocks and the terra rossa are consistent with the former being the parent material of the latter. The transformation from carbonate rock residue to terra rossa was governed mainly by chemical weathering which produced a marked decrease in the K2O/Al2O3 (i.e. illite/kaolinite) ratio. The geochemical pattern of the Apulian terra rossa has been influenced by sedimentary processes which have led to a characteristic distribution of mineralogical components and a moderate contamination by biogenic silica. [P.Br.]
Subjects:Biogenic processes; Carbonate platforms; Carbonate rocks; Chemical weathering; Clay minerals; Cretaceous; Dolostone; Geochemistry; Illite; Kaolinite; Limestone; Mesozoic; Parent materials; Pedogenesis; Sedimentary petrology; Sedimentary rocks; Sheet silicates; Silica; Silicates; Soil surveys; Soils; Surveys; Terra rossa; Weathering; Apulia Italy; Europe; Italy; Southern Europe
Abstract Numbers:89M/4066
Record ID:1989050612
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
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