Author
A. H. Beavers
Bio: A. H. Beavers is an academic researcher from University of Illinois at Urbana–Champaign. The author has contributed to research in topics: Illinoian & Loess. The author has an hindex of 1, co-authored 1 publications receiving 17 citations.
Topics: Illinoian, Loess, Montmorillonite, Chlorite, Illite
Papers
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TL;DR: In this paper, three groups of soil profiles were investigated to determine the influence of parent material and intensity of weathering upon the soil profile development and clay mineral composition and found that Montmorillonite, illite, and chlorite are the dominant clay minerals in all the samples studied.
Abstract: Clay mineral analyses were made of three groups of soil profiles — one developed from Peorian loess overlying Illinoian till — one associated with glacial till of Wisconsin age — one developed on deep to thin loess overlying Wisconsin till. These groups were investigated to determine the influence of parent material and intensity of weathering upon the soil profile development and clay mineral composition. Montmorillonite, illite, and chlorite are the dominant clay minerals in all the samples studied. In known loess samples, montmorillonite is invariably the most abundant clay mineral component. In the samples of unweathered till of Wisconsin age, illite and chlorite are the abundant clay minerals.
17 citations
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389 citations
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11 Sep 2018253 citations
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TL;DR: In this paper, eight pedons of modern soils and six paleosols were selected in order to investigate the types of modern and past soil forming processes and to compare the degree of soil development of surface and buried soils.
70 citations
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TL;DR: In this article, it was shown that smectite is the dominant pedogenetically formed mineral in the fine clay fraction in Central European Holocene and Pleistocene loess soils as well as in relict loess soil in the central and northern part of the Great Plains of the U.S.
70 citations
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TL;DR: The mineral components of many soils are inherited almost exclusively from the parent material, but in others they have developed mostly in situ during the course of weathering and pedogenesis as discussed by the authors.
Abstract: The mineral components of many soils are inherited almost exclusively from the parent material, but in others they have developed mostly in situ during the course of weathering and pedogenesis. In the majority of soils, the composition is a result of both inheritance and authigenic formation. Primary minerals are understood to mean those formed at high temperatures in igneous and metamorphic rocks, and secondary minerals are referred to those formed at lower temperatures in sedimentary rocks and soils. Primary minerals may have been subjected to one or more sedimentary cycles or have been components of previously existing soils. The proportion of secondary (authigenic) versus inherited (allogenic) minerals varies greatly among soils. Almost all the clay has developed in situ in some soils, but in others most of it is inherited. Soil sand and silt may consist entirely of primary minerals, but a significant portion of even these fractions.
56 citations