Minerals are the gift of nature which occurs either in thick forest areas or adjacent to it. During the course of mining, vegetation/forest gets destroyed and gets replaced by huge quantities of overburden dumps. Restoration of these dumps becomes necessary so that the land may come back to its original topography. Soil has the significant role in restoration process. Present paper focuses on how the physical characteristics of soil affect the restoration intervention in a derelict mined land. The study was carried out with an objective of evaluating the role of soil physical properties in ecological succession of an age series of 23, 22, 21 and 20 years old restored mine sites in Dehradun district, Uttarakhand, India. Adjoining natural forest was also studied for comparison of some selected soil physical properties (texture, porosity, electrical conductivity, bulk density). Data of the present investigation reveals that as the physical properties of soil improve with age of bio-restoration, the successional processes also advance culminating into successful restoration of mine derelict sites. The results of the present study will be helpful in further understanding the successional processes and how soil properties play significant role in successional processes.
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Light Minerals, XRD and SEM Studies in the depositional environments between Tuticorin and Thiruchendur, South East Coast of India, Tamil Nadu
Author(s)– Suresh Gandhi.M, Solai.A, Chandrasekar.N
Indian coastal region is subjected to complex coastal process and boasts multifarious landforms. IN order to know the depositional environmental conditions and provenance an attempt has been made suing light mineral studies. The investigated area is located in the coastal track of southern Tamil Nadu. The coastal stretch between Tuticorin and Thiruchendur, Gulf of Mannar extends over a distance of about 60 kms. The result shows that the higher percentage of microcrystalline quartz is characteristics of all the study regions. The sub rounded to rounded grade is dominant in Tuticorin zone where as the sub-angular grade is predominant in Thiruchendur zone. Higher order of sphericity is noticed in Tuticorin zone which implies the concentration of sediments from paleoenvironment along with present day marine environments. From SEM studies, the depositional environment can be categorized in terms physical and chemical energy gradients. Moreover, the study of quartz grains has pointed to the source of sediments , i.e. both igneous and metamorphic crystalline rocks transported some considerable distance from a mixed source, in addition to paleosedimetns, which littoral process have carried to beaches from different sources.
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