scholarly journals Facies Architecture and Sedimentary Structures in the drill cores of Uranium Bearing Sediments of Banganapalle Formation of Palnad Sub-basin, Guntur District, Andhra Pradesh

2021 ◽  
Vol 38 (1) ◽  
pp. 109-118
Author(s):  
SHEKHAR GUPTA ◽  
R V Singh ◽  
Rahul Banerjee ◽  
M B Verma
Keyword(s):  
Andhra Pradesh ◽  
Carbonaceous Matter ◽  
Vein Quartz ◽  
Sedimentary Structures ◽  
The North ◽  
Composition Variation ◽  
Quartz Arenite ◽  
Guntur District ◽  
Basal Conglomerate ◽  
Polymictic Conglomerate

The Banganapalle Formation, the lowest member of the Neoproterozoic Kurnool Group of rocks, resting over the basement granites, has been identified as the host rock for uranium in Koppunuru area in the western part of Palnad sub-basin. The uppermost arenite facies of the Banganapalle Formation is exposed on surface and shows only few bedform indicators like ripple marks, planer laminations etc. Down-hole lithological examinations on course of core drilling in Koppunuru and adjoining areas identified five recognizable lithofacies of Banganapalle Formation, viz.  basal conglomerate unit, quartzite-shale intercalated facies, and two quartz arenite facies separated by a grey shale dominated argillaceous facies. The polymictic conglomerate, with unsorted grit to pebble size clasts of granite, shale, quartzite, vein quartz and dolerite indicate short distance transportation and derivation from nearby granitoids traversed by quartz reef/dolerite dykes. Cyclic repetitions of arenaceous and argillaceous sediments in Banganapalle lithocolumn above the basal conglomerates point to alternate rhythmic marine transgression and regression regimes. These units can also be discriminated based on their sedimentary texture, bedforms and several soft-sedimentary penecontemporaneous deformational structures (PCD) like load structure, convolute bedding/laminations, and slump structures such as micro-slips, gravity faults and folds. These syn-sedimentary structures clearly indicate perturbation and submergence of the basin contemporaneous to deposition. Cross-beds suggests change in current direction/intensity while bi-directional symmetrical ripples in outcrops of upper arenite facies suggests that the Banganapalle sediments are derived from the basement granitoids exposed to the north as well as upper Cuddapah sediments to its west. Overall, the sedimentary structures, textural and composition variation of the lithounits suggest deposition of these sediments in marginal marine, inter- to supra-tidal flat environment. The porous and permeable nature of the quartz arenite and the basal conglomerates and the presence of available reductants in the form of sulphides and carbonaceous matter make them the best suited loci for fluid movement and precipitation of uranium.

Geochemistry and quality of groundwater of Gummanampadu sub-basin, Guntur District, Andhra Pradesh, India

2012 ◽  
Vol 67 (5) ◽  
pp. 1451-1471 ◽  
Author(s):  
N. Subba Rao ◽  
A. Subrahmanyam ◽  
S. Ravi Kumar ◽  
N. Srinivasulu ◽  
G. Babu Rao ◽  
...  
Keyword(s):  
Andhra Pradesh ◽  
Guntur District

scholarly journals V.—Note on some Pebbles in the Basal Conglomerate of the Cambrian at St. Davids

1889 ◽  
Vol 6 (7) ◽  
pp. 315-318 ◽  
Author(s):  
T. G. Bonney
Keyword(s):  
Vein Quartz ◽  
Basal Conglomerate ◽  
Cambrian System

More than one kind of rock, as we learn from Dr. H. Hicks and other writers, occurs in the conglomerate which forms a well-marked base to the Cambrian system at St. Davids. Sometimes the pebbles are mainly vein quartz, sometimes felstone predominates, but occasionally, as in the neighbourhood of Nun's Chapel Bay, quartzites (using the term rather generally) are not uncommon. At one place, not far from a quartz-felsite dyke, these are rather large, occasionally about a foot in diameter. From this locality, while spending a few days at St. Davids in 1882, I brought away specimens of three of the most marked varieties of quartzite, of which I had slices prepared, thinking that as examples of rocks which were probably far from modern at the beginning of the Cambrian age, their structures might be instructive.

scholarly journals Prevalence of ophthalmic disorders among hearing-impaired school children in Guntur district of Andhra Pradesh

2019 ◽  
Vol 67 (4) ◽  
pp. 530 ◽  
Author(s):  
RohitC Khanna ◽  
NiranjanK Pehere ◽  
Ramakrishna Marlapati ◽  
Krishnaiah Sannapaneni
Keyword(s):  
School Children ◽  
Andhra Pradesh ◽  
Hearing Impaired ◽  
Guntur District

scholarly journals Sedimentology and Economic Significance of Hangu Formation, Northwest Pakistan

2020 ◽  
Vol 11 (1) ◽  
pp. 48-55
Author(s):  
Kamil Ahmed Qureshi ◽  
Muhammad Raza Shah ◽  
Ishaque Ali Meerani ◽  
Shah Fahad ◽  
Hamid Hussain ◽  
...  
Keyword(s):  
Coal Seam ◽  
Carbon Content ◽  
Calorific Value ◽  
Chemical Study ◽  
Ash Content ◽  
Coarse Grained ◽  
Carbonaceous Shale ◽  
Sedimentary Structures ◽  
Economic Significance ◽  
Quartz Arenite

The Hangu Formation (Paleocene) consists of sandstone, siltstone, carbonaceous shale, coal and laterite. It is well exposed in the Trans Indus Surghar range and the southern Hazara basin. The sandstone is yellowish brown, fine to coarse grained and medium to thick bedded. The sandstone of the Hangu Formation is classified as quartz arenite on the Q-F-L diagram. It is mostly grain supported and are cemented by silica cement. The study of different stratigraphic sections reveal that Hangu Formation can be sub-divided into a number of lithofacies on the basis of sedimentary structures and lithological variations. These include lateritic lithofacies, coal and carbonaceous shale, cross-bedded sandstone, bioclastic limestone and bioturbated sandstone. All these lithofacies are well-developed in the Baroch Nala section of the Surghar range except the lateritic lithofacies which contains a thin bed of ferruginous clay. In the studied sections of the Hazara basin, the lateritic lithofacies is the only well-developed lithofacies present in the area. The coal occurs at two stratigraphic levels in the Baroch Nala section. The lower coal seam is thick and its chemical study indicates higher calorific value and carbon content than the upper coal seam and with low moisture/ash content. On the basis of the calorific value, the coal of the Hangu Formation is characterized as high volatile bituminous. The degree of laterization is strong in the Langrial and Khanpur sections and moderate in Baroch Nala section.

scholarly journals Impact of Lime Stone on Groundwater and Soil

2020 ◽  
Vol 8 (5) ◽  
pp. 1101-1104
Keyword(s):  
Groundwater Contamination ◽  
Soil Structure ◽  
Andhra Pradesh ◽  
White Cement ◽  
Sampling Locations ◽  
Groundwater Samples ◽  
Guntur District ◽  
Extent Of Damage ◽  
Lime Stone

Unpredictable rapid increased growth of population with increased lifting of water from the deeper crusts of earth leads severe groundwater contamination and also unrepairable damage to soil structure and its stability. The extent and severalty of damage to the groundwater and the soil depends on the nature and the toxicity of the pollutants. It is very difficult to identify exact sources of groundwater contamination as the sources are hidden from the sight even the sources are predicted it is difficult to measure the extent of damage to the groundwater and soil. Taken to consider it, the present study was carried out at Piduguralla municipal region, Guntur district Andhra Pradesh which is surrounded by limestone beds. Due to the availability and the abundance of natural lime stone the area is very much familiar with other name as ‘Lime city’ which is surrounded by number of lime stone and white cement industries. It was observed that chemicals from lime stone quarries damaging quality of both groundwater and the soil. Twenty five sampling locations were identified to collect groundwater samples along with ten soil sampling locations. Samples were collected for three times during the study period of three months and the average values were noted as final values, water quality results were correlated with IS5000 – 2012 standards to find out the suitability of water consumption, all the tests for both groundwater and the soil were carried out by adopting standard analytical procedures.

scholarly journals DEVELOPMENTAL PROGRAMS AND SOCIAL TRANSFORMATION - ASTUDY ON SCHEDULED CASTES IN GUNTUR DISTRICT OF ANDHRA PRADESH

2021 ◽  
Vol 9 (08) ◽  
pp. 896-899
Author(s):  
Bontha Ambedkar ◽  
◽  
V. DivyaThejomurthy ◽  
Keyword(s):  
Social Transformation ◽  
Andhra Pradesh ◽  
Total Population ◽  
British Government ◽  
Medieval Period ◽  
Developmental Programs ◽  
Guntur District ◽  
Scheduled Castes ◽  
The Government

The Scheduled Castes, according to the 2011 census, are 20.13 crores and constitute 16.6 per cent of the total population of the country and have long suffered from extreme social and economic backwardness. The Scheduled Castes category comprises many castes which share certain common handicaps in relation to the rest of the castes in society. They are quite distinct in caste hierarchy. They are economically dependent, educationally backward, politically suppressed, and socially the worst sufferers. Further they were classed as untouchables. The term scheduled castes refers to a list of castes prepared in 1935 by the British Government in India. But during the ancient period and medieval period they were known as Panchamas (fifth group), Chandalas (heathens or outeastes) and Antyajas (lowest class), and during the British period they came to be called first as Depressed Classes (dalitjatis) or Exterior Castes (avarnas), later as Harijans (children of God), and finally as Scheduled Castes (castes listed in the Government Schedule Article 341).

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