Browsing Scholarly literature by Subject "palaeo studies"
Now showing items 21-40 of 44
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Magnetic expression of some major lineaments and cretaceous quiet zone in the Bay of Bengal
(Springer, 1997)Magnetic data over the eastern continental margin of India and adjacent Bengal fan demarcate two major lineaments. A high amplitude N - S trending lineation of the Cauvery offshore Basin corresponds to the offshore fragment ... -
Marine magnetic anomalies off Ratnagiri, Western continental shelf of India
(Elsevier, 1984)Total magnetic intensity and bathymetric surveys were carried out in the offshore area of Ratnagiri on the western continental shelf of India and an isomagnetic anomalies map at a contour interval of 50 nT was prepared ... -
Marine magnetic anomalies off the southwest coast of India and their analysis
(Geological Society of India, 1977)Total magnetic intensity and bathymetric surveys were carried out in the offshore area of Ratnagiri on the western continental shelf of India and an isomagnetic anomalies map at a contour interval of 50 nT was prepared ... -
Monsoon related changes in sea surface productivity and water column denitrification in the Eastern Arabian Sea during the last glacial cycle
(Elsevier, 2005)Sea surface salinity reconstruction for the Holocene and the Last Glacial Maximum (LGM) suggests that the LGM-Eastern Arabian Sea was more saline (by approx.5 psu) than the Holocene due to weakened freshwater flux to the ... -
Occurrence of rhyolytic tuffs at deep sea drilling project site 219 on the Laccadive Ridge
(Geological Society of India, 1976)A study of thin sections from the lower and middle parts of Unit 5 (Paleocene) from Site 219 shows that these largely consist of acidic or rhyolitic tuffs. The overlying limestones in Unit 5 (Paleocene) and Unit 4 (Lower ... -
Orbital frequencies in radiolarian assemblages of the central Indian Ocean: implications on the Indian summer monsoon
(Elsevier, 2003)Radiolarian distribution in surface sediments and its relationships with overlying surface oceanography provided impetus for down-core faunal variation related to changes in monsoon intensity due to the Earth's orbital ... -
Oxygen isotope records of Globigerina bulloides across a north-south transect in the south-western Indian Ocean
(Springer, 2009)Along a north-south transect (9.69 degrees N to 55.01 degrees S) in the southwestern Indian Ocean during the Indian Pilot Expedition to Southern Ocean (PESO), the oxygen isotopic analysis of planktic foraminifera (Globigerina ... -
Paleogene magnetic isochrons and palaeo-propagators in the Arabian and Eastern Somali basins, NW Indian Ocean
(Geological Society of London, UK, 2002)A revised magnetic isochron map of the conjugate Arabian and Eastern Somali basins based on an up-to-date compilation of Indian, French, and other available sea-surface magnetic data are presented. The magnetic anomaly and ... -
Past 100 Ky surface salinity-gradient response in the eastern Arabian Sea to the summer monsoon variation recorded by delta super(18)O of G. sacculifer
(Elsevier, 2005)Northward flowing coastal currents along the western margin of India during winter-spring advect low-salinity Bay of Bengal water in to the Eastern Arabian Sea producing a distinct low-salinity tongue, the strength of which ... -
Petrology of seamounts in the Central Indian Ocean Basin: Evidence for near-axis origin
(Springer, 1995)Previous studies on the distribution and morphology of ancient seamount chains (>50 Ma) in the Central Indian Ocean basin (CIOB) indicated their generation from the fast spreading Southeast Indian Ridge. The petrology of ... -
Postglacial Indian Ocean
(Elsevier, 2006) -
Prehistoric chronology of Madhya Pradesh
(Harman Publishing House, 2004)Madhya Pradesh is very rich in archaeological wealth, with availability of remains starting from Early Stone Age to Historical period. Several Stone Age sites have been brought to light specially in districts of Hoshangabad, ... -
Productivity fluctuations in the southeastern Arabian Sea during the last 140 ka
(Elsevier, 2003)Detailed analyses of multiple geochemical productivity proxies such as calcium carbonate, biogenic opal, biogenic Ba, organic carbon and total nitrogen have been carried out on a sediment core from the southeastern Arabian ... -
Pyloniid stratigraphy - A new tool to date tropical radiolarian ooze from the central tropical Indian Ocean
(Elsevier, 2002)Pyloniid stratigraphy, a faunal abundance-variation stratigraphic tool, similar to Cycladophora davisiana stratigraphy employed at high latitudes, is found to work well for tropical radiolarian ooze. The relationship between ... -
Quaternary radiolarian faunal changes in the tropical Indian Ocean: Inferences to paleomonsoonal oscillation of the 10 degrees S hydrographic front
(Current Science Association, Bangalore, 1997)The northern Indian Ocean is characterized by three distinct surface water masses, i.e. (1) highly saline (greater than 34.5 ppt) Arabian Sea, (2) low saline (less than 34.5 ppt) Bay of Bengal and (3) a moderate salinity ... -
Recently studied sedimentary records from the eastern Arabian Sea: Implications to Holocene monsoonal variability
(The Society of Earth Scientists, 2008)Deep insight into exact mechanism(s) controlling past monsoonal variability on inter-annual to millennial time scales is a pre-requisite for developing predictive capability of monsoon on timescales relevant to human life. ... -
Record of the Cretaceous magnetic quiet zone in the distal Bengal fan and its significance in understanding the evolutionary history of the northeastern Indian Ocean
(Assoc. of Explor. Geophys., Hyderabad, India, 1996)The Bengal Fan was one of the thickest sedimentary basins of the World. Many were of the view that the magnetic anomalies will be hard to find off East Coast of India due to this huge sediment accumulation. Though extensive ... -
Sediment traps as a new tool for estimation of longevity of planktonic foraminifera
(NCAOR, Goa, 2005)Sediment trap technique provides time series data of sinking particles (faunal and sediment) from surface to bottom of the sea. Besides many other applications, data can also be used to estimate life span of planktonic ... -
Significance of correspondence between river discharge and proloculus size of benthic foraminifera in paleomonsoonal studies
(Springer, 1995)Variations in the mean proloculus size (MPS) of the benthic foraminiferal species Rotalidium annectens were studied in a core collected off Karwar (20 m water depth), on the west coast of India. Comparison of downcore ... -
Significance of relic carbonate deposits along the central and southwestern margin of India for late Quaternary environmental and sea level changes
(Elsevier, 2003)Environmental and sea level indicators were investigated using dredge samples from late Quaternary carbonate deposits along the shelf break between Goa and Cape Comorin, India. Geomorphic features in the area were identified ...