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- M. S. Rathi
- P. P. Khanna
- K. K. Purohit
- N. K. Saini
- Taraknath Pal
- S. Sengupta
- S. Shome
- Ravi Shanker
- T. Pal
- R. K. Bandyopadhyay
- Goutam Sutradhar
- Saurabh Singhal
- Vikas Adlakha
- S. K. Rai
- Som Dutt
- Aditya Kharya
- A. K. Gupta
- Sudhanshu Kumar Meher
- S. K. Banarjee Chaudhury
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- A. K. Jain
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- Sandeep Singh
- Puneet Seth
- Mrinal Shreshtha
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Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Mukherjee, P. K.
- Cleome rutidosperma DC.- a New Record for India
Abstract Views :454 |
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Indian Forester, Vol 95, No 4 (1969), Pagination: 237-237Abstract
Cleome rutidospenna DC. (Capparaceae), a native of Africa but naturalised in Burma and Malaysia, is now recorded from W. Bengal.
- Hydrocotyle himalaica P. K. Mukh. Sp. Nov.- a New Hydrocotyle from India
Abstract Views :290 |
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Indian Forester, Vol 95, No 7 (1969), Pagination: 470-472Abstract
no abstract- Some Name Changes in Indian Umbelliferae
Abstract Views :186 |
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Indian Forester, Vol 95, No 8 (1969), Pagination: 567-567Abstract
no abstract- A Note on the Correct Identity of Pimpinella radiata W. W. SM
Abstract Views :263 |
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Indian Forester, Vol 97, No 1 (1971), Pagination: 55-56Abstract
no abstract- Working Values for Major, Minor and Trace Elements for Meta-Basic Reference Sample (MB-H)
Abstract Views :168 |
PDF Views:1
Authors
Affiliations
1 Wadia Institute of Himalayan Geology, 33-General Mahadeo Singh Road, Dehra Dun, IN
1 Wadia Institute of Himalayan Geology, 33-General Mahadeo Singh Road, Dehra Dun, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 43, No 3 (1994), Pagination: 295-303Abstract
Proposal for the preparation of a metabasic reference sample (MB-H) from the Himalayas has attracted the participation of twenty four laboratories of repute from thirteen countries beside India. Tables of compiled data (1818 total individual results in all) are presented in this paper. Working values/information values have been assigned for 37 major, minor and trace elements including REEs after rigorous statistical as well as subjective data evaluation.Keywords
Trace Elements, Statistics, Geochemistry, Geostandard.- Evaluation of REE Determination in Geological Samples by Inductively Coupled Plasma Emission Spectrometry
Abstract Views :182 |
PDF Views:1
Authors
Affiliations
1 Wadia institute of Himalayan Geology, 33, General Mahadeo Singh Road, Dehra Dun - 248 001, IN
1 Wadia institute of Himalayan Geology, 33, General Mahadeo Singh Road, Dehra Dun - 248 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 48, No 3 (1996), Pagination: 325-330Abstract
Rare earth elements were separated from ten intemational geological reference samples by the classical ion-exchange chromatographic technique. Concentrations of ten rare earth elements were measured by inductively coupled plasma emission spectrometry. Comparison with the conensus values show a fairly good accuracy (<10%) for all the elements except for Lu. REE data for MB-H a metabasic reference sample and G-2, a granite reference sample have been compiled to determine the long term precision. A RSD value of 5-8% for La, Ce, Nd, Sm, Eu, Gd, Dy, Er and Yb indicates good reproducibility of our values. RSD for Lu was found to be high and it reaches up to 22% in G-2. The high RSD and poor accuracy for Lu in some samples is mainly attributed to low abundance level of this element which is very close to its detection limit. Ce, Gd and Sm are preferred to be analysed against a separated REE fraction of a rock standard having similar matrix to avoid the interferences. However, rest of the REEs can be comfortably measured against a salt standard.Keywords
Analytical Geochemistry, Rare Earth Elements, ICP-AES.- Geochemistry and Petrogenesis of a Supracrustal Granite from Dalhousie, Himachal Himlaya
Abstract Views :190 |
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Authors
Affiliations
1 Wadia Institute of Himalayan Geology, 33, Gen Mahadeo Singh Road, Dehra Dun, 248001, IN
1 Wadia Institute of Himalayan Geology, 33, Gen Mahadeo Singh Road, Dehra Dun, 248001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 52, No 2 (1998), Pagination: 163-180Abstract
A two mica granite body occurs in and around Dalhousie (Himachal Himalaya) as an intrusion into the core of an antiform at the southern flank of the Dhauladhar range. The rocks near the contact are enriched in biotite (bio>mus), whereas those of the core are more enriched in muscovite (mus>bio). Otherwise the major mineralogical make-up and their whole rock chemistry are monotonous. The rocks are weakly to moderately peraluminous in nature. The trace elemental characteristics are very similar to the average upper crust and follow more closely with the mean felsic S-type trend.
The low normative as well as calculated modal quartz and high NazO content suggest their origin from a less mature sedimentary source. The ubiquitous Eu anomaly, depleted Sr with enriched Rb and non-involvement of plagioclase or alkali feldspar in the fractionation model further implies that there was abundant feldspar in the source and more calcic plagioclase were left out in the residue that selectively retained Eu and SI- and released Rb in its early fraction of melts. It was noted that only -10% fractionation of solids mainly consisting of biotite and muscovite with minor amounts of feldspar are required to account for the major elemental mass balance requirement between the compositional differences. Whereas the depletion of REEs as well as other trace element abundances in the more . fractionated samples from the central part of the intrusion were modeled and attributed due to fractionation of minor quantity of REE enriched phases (∼1.5%) like monazite, apatite and zircon. However, the Zr requirement in this model is insufficient. Nevertheless, the observed nearly three times depletion in REEs, Zr, Th and P may be required to be explained in a similar way involving such REE sink accessory phases. The haplogranitic phase relations suggest that the emplacement of the granitic magma took place under water-sufficient condition at a shallower depth (-2-3kb.) whereas magma generated at relatively deeper level but restricted to a depth where plagioclase is stable rather than garnet. The water requirement was homogeneously made available internally by the breakdown of hydrous minerals like micas and aH2O was sufficiently high. This also led to high oxidizing condition of the magma causing higher population of Eu3+ as compared to Eu2+ that might have behaved much similar to other adjacent MREEs (Sm and Gd) which occurs in 3+ state.
Keywords
Geochemistry, Petrogenesis, Granite, REE, Himachal Himalaya.- A Proposed Amphibolite Reference Rock Sample (AM-H) from Himachal Pradesh
Abstract Views :201 |
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Authors
Affiliations
1 Wadia Institute of Himalayan Geology, Dehra Dun - 248 001, IN
1 Wadia Institute of Himalayan Geology, Dehra Dun - 248 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 4 (2007), Pagination: 799-802Abstract
An amphibolite sample named as AM-H is the third candidate reference rock in the series of reference samples from Himalaya. First two geostandards already characterized in the series being MB-H (metabasic) and DG-H (granite), are now in use for routine analysis at several laboratories. The sample is being distributed to several participating laboratories and analysts for contribution of analytical data. The sample was tested for its suitability as a reference standard in terms of its bulk homogeneity using F-test carried out for 16 fractions of the sample analyzed in duplicate. The results of homogeneity test along with relevant information like, location, geological set-up, mineralogical makeup, petrography and expected chemical composition are given for the benefit of potential analyst/contributors. The proposed reference sample may prove useful for analysis of metabasics and intermediate igneous rocks with high Cr and lower abundances of elements like Ba, Na, K, P, Nb and Zr.Keywords
Geochemistry, AM-H, Geostandard, Amphibolite, F-test, Himalaya.- Geochemical Dispersion Pattern of some Heavy Metals in Upper Alaknanda Catchment: Application in Mineral Exploration and Environmental Implications
Abstract Views :202 |
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Authors
Affiliations
1 Wadia Institute of Himalayan Geology, 33, Gen. Mahadeo Singh Road, Dehra Dun, 248 001, IN
1 Wadia Institute of Himalayan Geology, 33, Gen. Mahadeo Singh Road, Dehra Dun, 248 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 70, No 1 (2007), Pagination: 97-108Abstract
Geochemical characteristics of active stream and river sediment from part of the main Alaknanda catchment including main tributaries (Nandakini, Pindar and Mandakini) in Garhwal Himalaya were investigated. Economically important and environmentally sensitive selected trace element (Cr, Ni, Pb, Zn, Cu, Th and U) abundance in the sediments were studied to evaluate their spatial distribution in relation to lithotectonic control, mineral prospects and environmental geochemistry. The background concentrations, as median values, are found perceptibly enriched for these elements with respect to upper crustal average. Distribution patterns of U, Th and Pb are distinctive and show intrinsic relationship with the medium-grade deformed rocks (granitoids) of central crystallines and are generally enriched, whereas Cu is depleted in the same area. Background concentration of Cr is many fold enriched as compared to crustal abundance. 5 However, Ni in relation to Cr is not so high. There is a good correlation between Cr and Ni in the areas of mafic volcanic occurrences within low-grade metasedimentry rocks. But the same is not true in case of Nandakini valley within Baijnath central crystallines where Cr enrichment is anomalously high with Ni showing antagonistic relationship. High U and Th content in sediments are observed within or near the central crystalline thrust sheets, whereas the Cu and Zn anomaly zones are restricted within the Garhwal group of rocks. Some of these anomalies are significant and seems to have a definite structural (thrust/Fault) and lithological control, such as crystallines for U and Th and carbonates for Cu and Zn. The present study, thus also provides some useful clues for mineral exploration. Whereas the high anomaly areas are highly potential for economic mineral deposits of Cu, Zn, U and Th, but at the same time are equally prone to toxic exposure of U and Th as well as risk of arsenic and cadmium contamination that are normally associated with Cu and Zn sulphides.Keywords
Trace element geochemistry, Heavy Metals, Stream Sediments, Background value, Mineralization, Environmental impact, Himalaya.- Arsenic Rich Phases in Aquifer Sediments from Southern West Bengal
Abstract Views :187 |
PDF Views:179
Authors
Affiliations
1 Central Petrological Laboratory, Geological Survey of India, 15, Kyd Street, Kolkata 70001 6, IN
1 Central Petrological Laboratory, Geological Survey of India, 15, Kyd Street, Kolkata 70001 6, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 58, No 2 (2001), Pagination: 173-176Abstract
No Abstract.Full Text
- Association of Microbes with Arsenic-Bearing Siderite Concretions from Shallow Aquifer Sediments of Bengal Delta and its Implication
Abstract Views :202 |
PDF Views:134
Authors
Affiliations
1 Geological Survey of India, Kolkata - 700 016, IN
1 Geological Survey of India, Kolkata - 700 016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 58, No 3 (2001), Pagination: 269-271Abstract
No Abstract.Full Text
- Arsenic Rich Phases in Aquifer Sediments Prom Southern West Bengal
Abstract Views :181 |
PDF Views:141
Authors
Affiliations
1 Publication Division, Geological Survey of India, Eastern Region, Kolkata, IN
2 Central Petrological Laboratory, Geological Survey of India, 15 Kyd Street, Kolkata - 700 016, IN
1 Publication Division, Geological Survey of India, Eastern Region, Kolkata, IN
2 Central Petrological Laboratory, Geological Survey of India, 15 Kyd Street, Kolkata - 700 016, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 58, No 6 (2001), Pagination: 552-553Abstract
No Abstract.Full Text
- A New Geochemical Reference Sample of Granite (DG-H) from Dalhousie, Himachal Himalaya
Abstract Views :212 |
PDF Views:5
Authors
Affiliations
1 Wadia Institute of Himalayan Geology, Dehradun - 248 001, IN
1 Wadia Institute of Himalayan Geology, Dehradun - 248 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 52, No 5 (1998), Pagination: 603-606Abstract
A new geochemical reference sample of Granite named as DG-H from Dalhousie, Himachal Pradesh is proposed for collaborative study. The sample has been tested for its suitability as a reference standard in terms of its bulk homogeneity using F-test carried out for 16 fractions of the sample analysed in duplicate. The relevant information like, location, geological set-up, mineralogical make-up, petrography, expected chemical composition and F-ratios derived for major oxides are given for the benefit of potential contributors and users. The proposed standard may prove useful for analysis of granitic rocks with high Cr and lower abundances of elements like Ba, Ca, Cu, Nb, Ni, Sr, Th, Y and Zr.Keywords
Geochemistry, Granite, DG-H, Geostandard, F-Test, Himalaya.- Grooming of Entrepreneurial Society-The Need For Developed India
Abstract Views :201 |
PDF Views:120
Authors
Affiliations
1 Department of Mechanical Engineering, IN
2 Department of Physics, IN
1 Department of Mechanical Engineering, IN
2 Department of Physics, IN
Source
Reason-A Technical Journal (Formerly Reason-A Technical Magazine), Vol 5 (2004), Pagination: 28-30Abstract
Role of technical and management institutions are enormous as these institutions are creating the skiiled workforces for the industries and which are the backbone of socio-economic structure of any country. Normally in any developed country 60% - 70% economic growth occurs due to the technical advancement. At present, the number of AICTE approved technical and management institutions have grown to about 4791 with an annual intake of 6.5 million students from a meager 46 engineering colleges in 1947. The growth rate became very stiff during last 6-7 years.Full Text
- In situ U-Pb Zircon Micro-Geochronology of MCT Zone Rocks in the Lesser Himalaya Using LA–MC–ICPMS Technique
Abstract Views :232 |
PDF Views:80
Authors
P. K. Mukherjee
1,
Saurabh Singhal
1,
Vikas Adlakha
1,
S. K. Rai
1,
Som Dutt
1,
Aditya Kharya
1,
A. K. Gupta
1
Affiliations
1 Wadia Institute of Himalayan Geology, 33, General Mahadeo Singh Road, Dehradun 248 001, IN
1 Wadia Institute of Himalayan Geology, 33, General Mahadeo Singh Road, Dehradun 248 001, IN
Source
Current Science, Vol 112, No 04 (2017), Pagination: 802-810Abstract
A multi-collector (MC) inductively coupled plasma mass spectrometer (ICPMS) was used in combination with an Excimer (193 nm) laser to carry out in situ U-Pb dating of zircons. High performance twovolume sample cell provided unmatched laser ablated aerosol transportation efficiency resulting in reducing laser-related down-hole fractionation. Three wellcharacterized natural zircon reference standards (Harvard zircon 91500, GJ-1 zircon, Plesovice) were repeatedly measured in different sessions to evaluate the analytical figures of merits. Precision of <1% was achieved for spot sizes 20 μm with accuracies well within 2% of the reference values for these standards. Zircons from MCT Zone in the inner Lesser Himalaya reveal a highly discordant Palaeo-proterozoic (1901 ± 11 Ma) magmatic crystallization age inferred from the upper intercept in the concordia plot. The 207Pb/206Pb ages are also internally consistent with the disconcordia age with a weighted mean of 1900 ± 10 Ma and in turn suggest a major phase of Palaeo-proterozoic magmatic activity along the northern margin of Indian craton, while Early Miocene (~25 Ma) Pb loss in zircon inferred from lower intercept in disordria may be related to tectono-thermal activity along MCT.Keywords
LA–MC–ICPMS, Lesser Himalaya, MCT Zone, U–Pb Geochronology, Zircon.Full Text
- Experimental Studies on the Renal Protective Effect of Gokshura (Tribulus terrestris Linn) and Varuna (Crataeva nurvala Buch-Ham)
Abstract Views :217 |
PDF Views:2
Authors
Affiliations
1 Central Ayurveda Research Institute for Hepatobilliary Disorders, Bhubaneswar, IN
2 Institute of PG Ayurvedic Education and Research, Kolkata, IN
3 Department of Pharmacology, Calcutta National Medical College, Kolkata, IN
4 Department of Anatomy, Institute of PG Medical Education and Research, Kolkata, IN
5 Department of Kayachikitsa, IPGAER, Kolkata, IN
1 Central Ayurveda Research Institute for Hepatobilliary Disorders, Bhubaneswar, IN
2 Institute of PG Ayurvedic Education and Research, Kolkata, IN
3 Department of Pharmacology, Calcutta National Medical College, Kolkata, IN
4 Department of Anatomy, Institute of PG Medical Education and Research, Kolkata, IN
5 Department of Kayachikitsa, IPGAER, Kolkata, IN
Source
Research Journal of Pharmacology and Pharmacodynamics, Vol 8, No 2 (2016), Pagination: 75-82Abstract
Kidney is one of the most vital organs in the body. It is a very sophisticated structure and very complex physiology hence suffers from a variety of specific types of diseases and is also liable to be affected in a number of other systemic conditions of external origin. Moreover, there is no satisfactory treatment for most of the diseases of the kidney, while on the other hand the hospital statistics indicated a rising incidence of kidney diseases in different parts of the world. Standard medical treatment, dialysis and transplant are very expensive propositions and out of reach of the majority hence non-dialytic/non-transplant and economical conservative management is often sought by majority of the patients. In this paper renal protective study has been carried out on aqueous extract of Gokshura (Tribulus terrestris Linn) and Varuna (Crataeva nurvala Buch-Ham) as described in Ayurvedic literature based on their action on urinary system as pre and post treatment in different doses in experimentally induced nephrotoxic animal model with Gentamicin. Parameters like Blood urea and Serum Creatinine estimation, Urine RE/ME and histopathological examination of kidney tissues have been considered for comparative study. The result has been statistically analyzed for its significance. It is observed that Aqueous Extract of Gokshura Fruit and Aqueous Extract of Varun Bark pre treated to induction of nephrotoxicity shown protection to kidney against Gentamicin induced nephrotoxicity in rats considering the above parameters. The role of these 2 drugs may be considered as renal protective effect against drug induced nephropathy.Keywords
Renal Protective Effect, Gokshura (Tribulus terrestris Linn), Varuna (Crataeva nurvala Buch-Ham), Gentamicin Nephrotoxicity.- Development of Rural Industries
Abstract Views :155 |
PDF Views:0
Authors
Affiliations
1 Indian Investment Centre, Calcutta, IN
1 Indian Investment Centre, Calcutta, IN
Source
Journal of the Association of Engineers, India, Vol 53, No 4-1 (1978), Pagination: S25-S25Abstract
Rural industry is an enterprise which utilises local resources and skills with adequate infrastructural facilities for operating them. It is therefore true that the pattern of industries would vary from to place as resources endowments and skills will differ from place to place. But there is one common focal point and that is agriculture. Agro-based industries have close affinity with it and it would, therefore, be easier to set up such industries using agricultural raw materials.- Migmatization, Granite Generation and Melt Accumulation in the Himalayan Orogenic Channel, Central and Eastern Bhutan
Abstract Views :279 |
PDF Views:87
Authors
Affiliations
1 CSIR-Central Building Research Institute, Roorkee 247 667, IN
2 Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
3 Department of Geosciences, Texas Tech University, Lubbock, TX 79409, US
1 CSIR-Central Building Research Institute, Roorkee 247 667, IN
2 Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
3 Department of Geosciences, Texas Tech University, Lubbock, TX 79409, US
Source
Current Science, Vol 114, No 09 (2018), Pagination: 1903-1912Abstract
In Central and Eastern Bhutan Himalaya, the Great Himalayan Sequence (GHS) reveals mesoscopic structures within the migmatite–leucogranite association due to crustal anataxis above the Main Central Thrust (MCT). The first phase of dominant melting generates stromatitic migmatite along the main foliation during high grade of metamorphism, possibly by dehydration melting. Subsequent ductile strike–slip shearing caused in situ melting in dilatational sites to produce structureless, non-foliated patchy leucogranite leucosome as well as in boudin necks and post-tectonic patches. In addition, melt-enhanced deformation caused doming of accumulated melt and subsidiary ductile shear zones on either margins of these domes. Surrounded by biotite-rich melanosome, leucosomes destroy the pre-existing foliation during new anatectic phase, which post-dates earlier stromatitic migmatite. These migmatites are the snapshot of mutual relations between newly-developed migmatite and leucogranite melt, and signify the transportation of Himalayan Orogenic Channel to the extreme south in Central and Eastern Bhutan over the Lesser Himalayan sedimentary belt along the MCT.Keywords
Bhutan, Channel, Himalayan Orogenic Migmatite, Leucogranite.Full Text
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