scholarly journals Magnetometric surveys over some iron-ore occurrences in the Eastern Ghats belt of Godavari Districts, Andhra Pradesh

1984 ◽  
Vol 93 (2) ◽  
pp. 159-176
Author(s):  
V Bhaskara Rao ◽  
A Lakshmipathi Raju
Keyword(s):  
Andhra Pradesh ◽  
Iron Ore ◽  
Eastern Ghats ◽  
Eastern Ghats Belt

Incipient Charnockite Formation in Leptynite from Vizianagaram, Andhra Pradesh: Implication for Pan-African (?) Crustal Reworking in the Eastern Ghats Belt

2001 ◽  
Vol 4 (4) ◽  
pp. 603-604 ◽  
Author(s):  
Niloy Ranjan Datta ◽  
P. Sengupta ◽  
Aparajita Gangopadhyay ◽  
Sushmita Sarkar
Keyword(s):  
Andhra Pradesh ◽  
Eastern Ghats ◽  
Eastern Ghats Belt ◽  
Pan African ◽  
Crustal Reworking

scholarly journals Prismatine and ferrohögbomite-2N2S in granulite-facies Fe-oxide lenses in the Eastern Ghats Belt at Venugopalapuram, Vizianagaram district, Andhra Pradesh, India: do such lenses have a tourmaline-enriched lateritic precursor?

2003 ◽  
Vol 67 (5) ◽  
pp. 1081-1098 ◽  
Author(s):  
E. S. Grew ◽  
A. T. Rao ◽  
K. K. V. S. Raju ◽  
C. Hejny ◽  
J. M. Moore ◽  
...  
Keyword(s):  
South Africa ◽  
Andhra Pradesh ◽  
Granulite Facies ◽  
Eastern Ghats ◽  
Dehydration Melting ◽  
Fe Oxide ◽  
Eastern Ghats Belt ◽  
Fine Grained ◽  
Distinctive Type ◽  
Ultrahigh Temperature

AbstractFluorine-rich prismatine, (□,Fe,Mg)(Mg,Al,Fe)5Al4(Si,B,Al)5O21(OH,F), with F/(OH+F) = 0.36–0.40 and hercynite are major constituents of a Fe-Al-B-rich lens in ultrahigh-temperature granulite-facies quartz-sillimanite-hypersthene-cordierite gneisses of the Eastern Ghats belt, Andhra Pradesh, India. Hemo-ilmenite, sapphirine, magnetite, biotite and sillimanite are subordinate. Lithium, Be and B are concentrated in prismatine (140 ppm Li, 170 ppm Be, and 2.8 –3.0 wt.% B2O3). Another Fe-rich lens is dominantly magnetite, which encloses fine-grained zincian ferrohögbomite-2N2S, (Fe2+,Mg,Zn,Al)6 (Al,Fe3+,Ti)16O30(OH)2, containing minor Ga2O3 (0.30 –0.92 wt.%). Fe-Al-B-rich lenses with prismatine (or kornerupine) constitute a distinctive type of B-enrichment in granulite-facies rocks and have been reported from four other localities worldwide. A scenario involving a tourmalineenriched lateritic precursor affected by dehydration melting is our preferred explanation for the origin of the Fe-Al-B-rich lenses at the five localities. Whole-rock analyses and field relationships at another of these localities, Bok se Puts, Namaqualand, South Africa, are consistent with this scenario. Under granulite-facies conditions, tourmaline would have broken down to give kornerupine-prismatine (±other borosilicates) plus a sodic melt containing H2O and B. Removal of this melt depleted the rock in Na and B, but the formation of ferromagnesian borosilicate phases in the restite prevented total loss of B.

Three Mosses New to Bryoflora of Eastern Ghats

2016 ◽  
Vol 1 (1) ◽  
Author(s):  
A.K. Asthana ◽  
Priyanshu Srivastava
Keyword(s):  
Tamil Nadu ◽  
Andhra Pradesh ◽  
Eastern Ghats ◽  
Extended Range

Eastern Ghats are discontinuous hill ranges passing through Orissa, Andhra Pradesh and Tamil Nadu located between 11⁰30' & 22⁰N latitude and 76⁰50' & 86⁰30'E longitude. Bryophyte flora of this region is still very less explored. During a recent field exploration to Eastern Ghats region of Tamil Nadu three moss taxa viz. Solmsiella biseriata (Austin) Steere, Aulacopilum glaucam Wilson and Groutiella tomentosa (Hornsch) Wijk & Marg. have been identified as new additions to moss flora of Eastern Ghats. The present study provides the information regarding extended range of distribution of these taxa in India and a compensable account of morpho-taxonomical details with earlier described taxa from other bryogeographical zones.

Structure and floristic composition of tree stand in tropical forest in the Eastern Ghats of northern Andhra Pradesh, India

2011 ◽  
Vol 22 (4) ◽  
pp. 491-500 ◽  
Author(s):  
C. Sudhakar Reddy ◽  
Shilpa Babar ◽  
Giriraj Amarnath ◽  
Chiranjibi Pattanaik
Keyword(s):  
Tropical Forest ◽  
Andhra Pradesh ◽  
Floristic Composition ◽  
Eastern Ghats ◽  
Tree Stand

Aluminous sapphirine granulites from the Eastern Ghats Belt (India): Phase relations and relevance to counterclockwise P-T history

2006 ◽  
Vol 18 (1) ◽  
pp. 35-48 ◽  
Author(s):  
Suman Das ◽  
Abhijit Bhattacharya ◽  
Michael M. Raith ◽  
Subhadip Bhadra ◽  
Manua Banerjee
Keyword(s):  
Phase Relations ◽  
Eastern Ghats ◽  
Eastern Ghats Belt

Studies on Phytochemical, Antimicrobial activity and Micro propagation of Medicinal plants from Eastern Ghats of Andhra Pradesh

2021 ◽  
pp. 111-115
Author(s):  
Darsi Phebe Sarah Koti Ratnam
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plants ◽  
Andhra Pradesh ◽  
Eastern Ghats ◽  
Total Phenolic ◽  
Rauwolfia Serpentina ◽  
Alstonia Scholaris ◽  
Soxhlet Apparatus ◽  
Medicinal Plant Extracts ◽  
Micro Propagation

The aim of the present study was to investigate the presence of phyto chemical, antimicrobial activities and micro propagation of the selected medicinal plants i.e. Rauwolfia serpentina, Adhatoda vasica and Alstonia scholaris. These endemic plants belong to Apocynaceae and were collected from higher altitudes of Eastern Ghats, Lambasingi forest region, Andhra Pradesh India. To determine the total phenolic and flavonoid contents, Soxhlet apparatus was used for this study. Solvents used were in this study are water, ethyl acetate, chloroform and methanol. Among them the solvent methanolic extract of Rauwolfia serpentina (57.15±1.2) and Alstonia scholaris (55.06±0.7) showed high content of saponins. The test microrganism which were studied against the efficacy of selected medicinal plant extracts were, two bacterial strians i.e., Streptococcus pyogenes, Pseudomonas aeruginosa and two fungal strains Aspergillus niger and Vibrio cholera. The antimicrobial activity was proved that the methanol extracts was found to be maximum antimicrobial growth inhibition. The simple and effective protocol was developed to propagate the Rauwolfia plant from nodal explants. Maximum no of 95% plantlets regenerated successfully. These propagated plantlets were hardened to survive in vivo conditions.

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