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Distribution of zeolitic soils in India

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Relation http://oar.icrisat.org/9106/
http://www.currentscience.ac.in/Volumes/109/07/1305.pdf
 
Title Distribution of zeolitic soils in India
 
Creator Bhattacharyya, T
Chandran, P
Ray, S K
Pal, D K
Mandal, C
Mandal, D K
 
Subject Soil Science
 
Description Calcium-rich zeolites control naturally occurring
chemical degradation in the black soils (Vertisols and
their intergrades). With the help of modern tools such
as remote sensing, geographic information system, soil
database, geological information, topography and
other related datasets, an attempt was made to update
the distribution of zeolitic soils in India. To ascertain
the presence of Ca-rich zeolites in soils, mineralogical
information was generated using X-ray diffraction
techniques for the selected soils from the Indo-Gangetic
Plains and the black soil region (BSR). The zeolitic
soils are mostly confined in the pediments (sloping regions
of the upland) of the Deccan plateau in BSR,
although a few are also found along the valley floor.
The IGP, on the other hand, hosts the zeolitic black
soils along the drainage channels in the valley floor
where the basaltic alluvium deposited the smectite and
clay-rich sediments. The study indicates Ca-rich zeolitic
soils in India to occupy an area of ~2.8 m ha, of
which BSR and IGP constitute ~92% and ~8% respectively.
The zeolites are mostly concentrated in the drier
tracts of the country and help in maintaining soil
health against natural soil degradation. While the
occurrence of Ca-rich black soils in BSR was known,
those in the IGP are new findings. With the help of the
available information, we have generated state-of-art
information approximation map on the distribution of
Ca-rich zeolites in Indian soils.
 
Publisher Current Science Association
 
Date 2015-10-10
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/9106/1/ZEOLITE%20CURRENT%20SCIENCE%20PAPER%20.pdf
Bhattacharyya, T and Chandran, P and Ray, S K and Pal, D K and Mandal, C and Mandal, D K (2015) Distribution of zeolitic soils in India. Current Science, 109 (7). pp. 1305-1313. ISSN 0011-3891