... to contain them. Case studies include mines at Jhamarkotra, Matoon-Kanpur, Jhabua, Maldeota-Durmala and Purulia. Copyright © 1987 Geological Society of India 1987 Geological Society of India 10URNAL GEOLOGICAL SOCIETY OF INDIA Vol. 30, Noy. 1987, pp. 439 to 450 Environmental impact of phosphate mining...

...B. K. Singh; V. Subramanian Abstract Water quality studies in the mining areas clearly point out to the contributions made by the mining activity to the chemical composition of Bandal flver in the Durmala and Maldeota region Levels of phosphates and fluofide in the water are enhanced even in canal...

... (30 ï 042 353 : 78 ï 292 453) and abandoned mine of PPCL at Maldeota (30 ï 202 453 : 78 ï 072 403 ) in the Garhwal syncline, Tehri Garhwal district, Uttarakhand lesser Himalaya. ( Figs.1 and 2 ). The phosphatic samples were macerated in 10-15% glacial acetic acid for 10-15 days. Macerated...

... mine (Fig. 4). Bhargava (1969) describes algal pisolites from upper Krol of Himachal Pradesh. ALGAL MAT FACIESFINELY LAMINATED DOLOMITE ALGAL CRENULATEO LAMINATION AL TERNATE WITH LAYI:RS OF SMOOTH ALGAL lAMINATION Figure 4. Lithologic succession in upper Krol dolomite (Krol D) near Maldeota...

... Syncline, Garhwal Lesser Himalaya) at Maldeota Phosphorite Mine, Dehra Dun. 1-3. holotype, (WIMF/A 189, samp~e IVtDA - 15); 1. a natural cluster in oblique top view, x 100; 2. natural cluster in side view, x 1l4~ 3. two natural clusters in side views, x 75; 4"6. paratypes of isolated sclerites; 4. side...

... into action. Post-retirement, he was nominated by the Ministry of Mines to the Verma Committee to suggest improvements in the working of the Geological Survey of India. 01 9 2017 Copyright © 2017 Geological Society of India 2017 Geological Society of India Ravi Shanker...

... , D.K. , Mamgain , V.D. , Misra , R.S. and Srivastava , J. P. (1983) Shelly microfossils of Tommotian age (Lower Cambrian) from the Chert-Phosphorites Member of Lower Tal Formation, Maldeota, Dehra Dun District, Uttar Pradesh . Geophyto. , v. 13 , pp. 116 – 123 . Bhatt , D.K...

... by marly to arenaceous members of arenites and microbial laminites of the Upper Tal Formation. The samples studied here were collected from two limbs of the Mussoorie Syncline, Maldeota (= MA) located in the southern limb and Durmala ( = DUR) on the northern limb; for localities and detailed...

... (1980) describe this facies from Krol dolomite (D) on lharipani-Mussoorie mule track and near Maldeota phosphorite mine, Dehra Dun. The senior author (V.C.T.) has traced this facies in Krol (D) dolomite at King Crab, Mussoorie ridge, Gunhill Camel's back and Dhobhighat-Chamasari localities of Mussoorie...

...Ben Yang; Michael Steiner Abstract Classical sections, such as the Maidiping and Daqiao Mine sections of South Sichuan (China), expose early Cambrian deposits that are crucial for understanding the biological and environmental evolution of Yangtze Craton. These sequences are rich in Terreneuvian...

...., M1SRA, R. S. and SRIVASTAVA, J. P. (1983) Shelly micro-· fossils of Tommotian age (Lower Cambrian) from Chert Phosphorite Member of Tal Formation, Maldeota, Dehra Dun district, Uttar Pradesh. Geophytology, v. (1), pp., 116-123. BHATT, D. K., MAMGAIN, V. D. and MISRA, R. S. (1985) Small shelly fossils...

... and carbonate rocks to generate sulphate ions and combine with calcium in solution to form gypsum. Upper and lower Krol-Tal contact contain black carbonaceous shale, algal mat structure which describes the paleoenvironmental facies through the Maldeota Phosphorite mine in the Dehradun-Jharipani mule track...

...). Elelineation of prospecting targets for Kuroko deposits based on modes of volcanism of underlying dacite and alteration halos. Mining Geology, v.30, pp.137-152. SINGHS..K. and S I N G IS~. ,(1997). Geochemcinl characteristics of post-magmatic alteration and tungsten mineralisation associated with Balda granite...

... was scanned to obtain the bulk concentration of major elements) with a Ca/P ratio (% wt) of 2.27 ± 0.18. These values are compatible with a phosphorus content ranging from 9.2–14.0 wt % in pelletic phosphorite from Janytas mine field (early Cambrian, Maly Karatau, S. Kazakhstan), Doushantuo Formation (Sinian...

... Petrology , 46 , 235 – 9 . Banerjee , D. M. , Schidlowski , M. , Siebert , F. & Brasier , M. D. 1997 . Geochemical changes across the Proterozoic–Cambrian transition in the Durmala phosphorite mine section, Mussoorie Hills, Garhwal Himalaya, India . Palaeogeography...

... on Precambrian-Cambrian boundary : Himalayan Geology , v. 11 , p. 360 - 372 . Banerjee , D.M. , Schidlowski , M. , Siebert , F. , and Brasier , M.D. , 1997 , Geochemical changes across the Precambrian-Cambrian transition in the Durmala phosphorite mine section, Mussoorie Hills, Garhwal...

... (Department of Geology and Mines), Karma Choden and Ugyen Rinzen (Yangphel Adventure Travel). Detailed and constructive reviews by Editor Eric Kirby and two anonymous reviewers are gratefully acknowledged. REFERENCES CITED Acharyya S.K. Sastry M. , 1979 , Stratigraphy of the eastern...