Studies of some minerals in calcareous soils of a r e

Publication Title Name :Studies of some minerals in calcareous soils of a.r.e /
Publication year :Thesis 1980
Publication Address :Mikhail, nawal naguib.
Main Category :Technology
Main & Sub Category :631 Techniques, equipment & materials - Calcareous soils
Vol :-
Dewey Decimal Classification (DDC)No :631.14
Article Title :Studies of some minerals in calcareous soils of a.r.e /
Statement of responsibility :Nawal naguib Mikhail ; Supervised by M. khadr, M.k sadk
Place of publication :-
Name of publisher :-
Date of publication :1980.
Publication Extent :213 p. ؛
Publication Dimensions :30 cm.
Topical term :Calcareous soils.
Leader :00000naa#a2200000uu#4500
ISBN :11606726
Original BibID :FLS
Date and time of last modification :20131121124153.0
General informatio :/ c)1980. a)213 p. ؛ c)30 cm. a)Calcareous soils./sadk, M. k., / Suprevisor. khadr, M., / Suprevisor. Benha university. / Faculty of agriculture. -Department of horticulture./a)In cludes biblografac refrens./a)sadk, M. k., e)Suprevisor. a)khadr, M., e)Suprevisor. a)Benha university. b)Faculty of agriculture. b)Department of horticulture./The study includes two complete calcareous profiles from Maryut and Burg El-Arab localities, and two 000- Calcareous ones from El-Kanater (alluvium) and El-Payoum (lacustrine) localitieso ~ese profiles were morphologically described in the field and the representative samples were collected for laboratory investigations. Evaluation of the physical and chemical properties o~ these soil samples was carried out through the determinatioD of their particle size d1strlbu~onl ca C03 contentl soil reactioD; chemical composition of the soila saturation extracts and exchange characteristics. Separation of ’the clay fraction ( < 2 P equivalent spher-ical diameter) was then conducted, and the separated clayS were X-ra;yed for identification of their clay mineral aas_blages~ The obtained data reveal that the calcareous 8011s range in texture from sandJ’10” ’to ail ty” 10•• and 10•• in Burg XL-Arab and Jlaryut localities respectively, while ’the allUviUII are sUt1 clay and the lucustriae are clay throughOll’t w11;h apparent l1IlUo1’ll1t.Y. Ca ~3 .content refiects 1ihe pronounced intluenee ~ paren’li _teria! en the formation of these soils as well as·~e sedimentation regiae. ~exeforet its origin is quite different in the three families of prof!l es, being of primary origin 1n the calcareous protl1es,wbile of secondary origin in un. alluvium and laeustrime ones. This has been reflec~ed on the distribution of carbonate in the mechanical separates as it dominates the s11t fraction in the former care while dominates the c~ay fra.ctlon in the latter ODes! The ehemical composition of the soils saturation extract shows that the calcareous soUs are sal’t-affected,whereas the other soils are nOD-saline. Sodiumdominates the cationic composition and Chloride dominates the anionic composition except in few cases~ Cation exchange capacity of the calcareous soils in relatively low than those of the alluvium and lac11Strille ones and this is rendered to the variations in Ilineralogieal composition as will be shown later. ~e. patterns of exchangeable cations dif’f’er widely trora one profile to another and even within the two profUes representing ’the calcareous so118, while Na predominates 1n Burg litl-Arab ”and El-:Fayoum so11s, Ca dODlinates in lIaryut and also in the alluvial soil of EJ.- Kanater. As to the mineralogicalcomposit1on of 8011 clays, presented X-ray diffractograms Show that palygorskite. 11l1te andinterstratified minerals dominate the calcareous clays with kandite, smectite, vermiculite and sepiolite 1n ” a decreasing order~ Accasory minerals differ in-between both profiles. On the other land, the alluvial clay is dominated with smectite and 111ite 1n the uppermost surface, while dominated with vermiculite and smectite in the deepest layers. The associated minerals are kaolinite and interstratified layer silicates with traces of chlorite. Accessory minerals are mainly quartz and hematite. ~e lacustrine clay 1s dOll1nated with smectite and 1nterstratified minerals with considerable amount of sepiolite in ’thetop l~er and kaolirdte in ”the 55-80 CIIl:aler. ~e expected foras o~ 1nterstratifieatioD in each clay fraction were also discussed in light of the present :1Dformatioft. The origin and genesis of the dominant clay minarals in each soil group is predicted with reference to parent materials involved, sediaentatioD regime and enviroDmental condi tions prevailed during soUs t’ormatlon”./a)The study includes two complete calcareous profiles from Maryut and Burg El-Arab localities, and two 000- Calcareous ones from El-Kanater (alluvium) and El-Payoum (lacustrine) localitieso ~ese profiles were morphologically described in the field and the representative samples were collected for laboratory investigations. Evaluation of the physical and chemical properties o~ these soil samples was carried out through the determinatioD of their particle size d1strlbu~onl ca C03 contentl soil reactioD; chemical composition of the soila saturation extracts and exchange characteristics. Separation of ’the clay fraction ( < 2 P equivalent spher-ical diameter) was then conducted, and the separated clayS were X-ra;yed for identification of their clay mineral aas_blages~ The obtained data reveal that the calcareous 8011s range in texture from sandJ’10” ’to ail ty” 10•• and 10•• in Burg XL-Arab and Jlaryut localities respectively, while ’the allUviUII are sUt1 clay and the lucustriae are clay throughOll’t w11;h apparent l1IlUo1’ll1t.Y. Ca ~3 .content refiects 1ihe pronounced intluenee ~ paren’li _teria! en the formation of these soils as well as·~e sedimentation regiae. ~exeforet its origin is quite different in the three families of prof!l es, being of primary origin 1n the calcareous protl1es,wbile of secondary origin in un. alluvium and laeustrime ones. This has been reflec~ed on the distribution of carbonate in the mechanical separates as it dominates the s11t fraction in the former care while dominates the c~ay fra.ctlon in the latter ODes! The ehemical composition of the soils saturation extract shows that the calcareous soUs are sal’t-affected,whereas the other soils are nOD-saline. Sodiumdominates the cationic composition and Chloride dominates the anionic composition except in few cases~ Cation exchange capacity of the calcareous soils in relatively low than those of the alluvium and lac11Strille ones and this is rendered to the variations in Ilineralogieal composition as will be shown later. ~e. patterns of exchangeable cations dif’f’er widely trora one profile to another and even within the two profUes representing ’the calcareous so118, while Na predominates 1n Burg litl-Arab ”and El-:Fayoum so11s, Ca dODlinates in lIaryut and also in the alluvial soil of EJ.- Kanater. As to the mineralogicalcomposit1on of 8011 clays, presented X-ray diffractograms Show that palygorskite. 11l1te andinterstratified minerals dominate the calcareous clays with kandite, smectite, vermiculite and sepiolite 1n ” a decreasing order~ Accasory minerals differ in-between both profiles. On the other land, the alluvial clay is dominated with smectite and 111ite 1n the uppermost surface, while dominated with vermiculite and smectite in the deepest layers. The associated minerals are kaolinite and interstratified layer silicates with traces of chlorite. Accessory minerals are mainly quartz and hematite. ~e lacustrine clay 1s dOll1nated with smectite and 1nterstratified minerals with considerable amount of sepiolite in ’thetop l~er and kaolirdte in ”the 55-80 CIIl:aler. ~e expected foras o~ 1nterstratifieatioD in each clay fraction were also discussed in light of the present :1Dformatioft. The origin and genesis of the dominant clay minarals in each soil group is predicted with reference to parent materials involved, sediaentatioD regime and enviroDmental condi tions prevailed during soUs t’ormatlon”./ Thesis(m .s) - Benha universty- faculty of agriculture - department of horticulture. a)Thesis(m .s) - Benha universty- faculty of agriculture - department of horticulture. a)Texet in english and abstract in english. 1)M 2)Master/
Cataloging Source :130221s1980####xx#####frmb###000#0#eng#c
DDC No :2)21 a)631.14
Personal Name :a)Mikhail, nawal naguib.
Publication data field :a)Studies of some minerals in calcareous soils of a.r.e / c)Nawal naguib Mikhail ; Supervised by M. khadr, M.k sadk
physical descripti :-
Topical term :-
Language Code :a)EG EULC c)EG EULC a)eng b)eng
Additional input :-
Author Name :Mikhail, nawal naguib.

 

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