Genesis and characteristics of a red-yellow soil derived from Gabbro, Northern Kyushu

Kanno, Ichiro; Honjo, Yoshio; Arimura, Shizuoki; Tokudome, Shoichi

doi:10.1080/00380768.1963.10431058

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Stephen (1952) showed that in an appinite-derived soil, hornblende weathered to chlorite which in turn altered to interstratified chlorite-vermiculite. A similar transformation was found in some Japanese soils by Kanno et al (1963) and by Kato (1965). Again Kukovskii (1958 found that in a weathered amphibolite, hornblende was replaced by hydrochlorite and Lebedev (1959) found a similar mineral in the weathered crust of hornblendebearing ultrabasic rocks in south-west Ukraine.…”

Section: Discussionsupporting

confidence: 82%

A Study of Weathering in a Soil Derived from a Biotite-Hornblende Rock

Wilson¹,

Farmer²

1970

Clay miner.

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The weathering of hornblende in the Rehiran profile has been investigated by optical, X-ray, infrared and differential thermal methods. Optical studies of the fresh hornblende show that it contains discrete lamellar intergrowths of another amphibole which, from infrared evidence, is of an iron-rich nature. This minor phase is selectively weathered in the lower horizons and yields a clay mineral which was identified as interstratified swelling chlorite-saponite. The major hornblende component remains relatively unchanged. Single crystal photographs indicate that the formation of the clay mineral is not structurally controlled by the parent hornblende, although there is a tendency towards alignment along cleavage planes. The clay mineral becomes unstable in the upper part of the profile and could not be detected in the A horizon. Comparisons are made with the findings of other workers.

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Section: Discussionsupporting

confidence: 82%

A Study of Weathering in a Soil Derived from a Biotite-Hornblende Rock

Wilson¹,

Farmer²

1970

Clay miner.

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“…Ageing of the amorphous material to oriented cryptocrystalline goethite, with direct solution of residual fresh cores, occurs in augite, while enstatite may give rise to vermiculite or vermiculite-chlorite (Delvigne, 1965). In humid subtropical or Mediterranean-type climates, similar replacements are found (Hendricks & Whittig, 1968) but more direct formation of chlorite, vermiculite or mixed-layer minerals appears typical (Cady, 1950;Kanno et at., 1963). Intermediate brown iron oxides are also recorded (Kato, 1965).…”

Section: Discussionmentioning

confidence: 95%

“…under peat; Strakhov, 1967) but most natural occurrences of the more highly developed kaolinite or kaolinite-gibbsite vermiforms have been reported from regions of redyellow soils in warm humid climates (e.g. Nyun & McCaleb, 1955;Kanno et al, 1963).…”

Section: R Bashammentioning

confidence: 99%

Mineralogical changes associated with deep weathering of gabbro in Aberdeenshire

Basham

1974

Clay miner.

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The distribution, profile morphology and mineralogy of deeply weathered gabbroic rocks in the basic igneous masses of lnsch and Bogancloch, Aberdeenshire, have been studied. The saprolite is characterized by granular disintegration and spheroidal weathering with a relatively low degree of secondary mineral development. The upper part of the profile often shows evidence of mass movement and incorporation into overlying drift but below this zone the degree of alteration is generally uniform with depth. Feldspar and hornblende are largely unaffected, except by disintegration, but pyroxenes show varying degrees of weathering from the incipient development of amorphous iron oxides to replacement by reticulate networks or complete pseudomorphs of trioctahedral vermiculite. Biotite weathers to hydrobiotite and vermiculite, giving rise also, under certain conditions, to kaolinite-gibbsite vermiforms. The correspondence between occurrences of deep weathering and coarser textured biotite-bearing rocks can be related to the instability of this mineral. Consideration of the mineralogical changes found and the morphology of the profile of weathering suggest their formation under a warm, humid climatic regime, probably during the mid Tertiary times.

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“…The ratios of Brown Forest soils in the USSR ranged from 0.7 to 1.5 (mostly 1.0) (13,26). The ratio of the surface horizon is 0.96 for Brown Forest soil derived from serpentine (11) and 0.27 for Red-Yellow soil derived from gabbro (10). 5 Humic Allophane soils have ChlCf ratios ranging from 0.3 to 1.9.…”

Section: Humus Composition Of Humic Allophane Soilsmentioning

confidence: 99%