Browsing by Subject "radiocarbon dating"
Now showing items 1-8 of 8
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A first look at past sea surface temperatures in the equatorial Indian Ocean from Mg/Ca in foraminifera
(AGU, 2005)Sea surface temperature (SST) for the central equatorial Indian Ocean, has been reconstructed over the last approx. 137 kyr, from Mg/Ca of the planktonic foraminiferal species Globigerinoides ruber. According to our record ... -
Atypical delta sup(13) C signature in Globigerina bulloides at the ODP site 723A (Arabian Sea): Implications of environmental changes caused by upwelling
(Elsevier, 2004)Production of Globigerina bulloides generally increases during upwelling in the tropical ocean and, in particular, during southwest monsoon season in the Arabian Sea. We studied the delta sup(13) C signatures of Globigerina ... -
Carbon and oxygen isotope time series records of planktonic and benthic foraminifera from the Arabian Sea: Implications on upwelling processes
(Elsevier, 2003)Oxygen and carbon isotopic analyses have been performed on the tests of Globigerina bulloides and Pulleniatina obliquiloculata (planktonic foraminifera) and Uvigerina excellens (benthic foraminifer) to study the evolution ... -
Do inverted depositional sequences and allochthonous foraminifers in sediments along the Coast of Kachchh, NW India, indicate palaeostorm and/or tsunami effects?
(Springer, 2006)The study of 134 subsurface sediment samples from three cores collected along the Coast of Kachchh, off Gujarat Province, NW India, shows the presence of 151 foraminifer species. Q-mode cluster analysis on foraminifer data ... -
Equatorial Indian Ocean productivity during the last 33 kyr and possible linkage to Westerly Jet variability
(Elsevier, 2014)The top 1 m radiocarbon dated section of a 5.6 m long sediment core retrieved from the Equatorial Indian Ocean is studied for productivity changes in response to climate variability that have taken place during the last ... -
Exploration of Portuguese shipwreck in Goa waters of India: With special reference to Sunchi reef
(Ulu Burun Publishing, 2004)India had overseas trade contacts from the 4th-3rd Millennium BC. The history of Portuguese shipwrecks in Goa waters began with the arrival of Vasco da Gama at Kapukad (Kappat) a few kilometers north of Calicut (Kozhikode) ... -
Holocene phosphorites of the western continental margin of India
(Indian Association for Limnology and Oceanography, 1985)Seventeen samples collected during different cruises of RV Gaveshani, were analysed by X-Ray diffractometer for apatite. These samples consists of algal and oolitic limestones and were recovered from depths ranging from ... -
Isotopic studies of beach rock carbonates from Konkan, central west coast of India
(New Academic Publishers, Delhi, 2001)The beach rock carbonates from the 200 km long stretch from Guhagar in the north to Deogad in the south along the Konkan coast (Maharashtra, India) are studied for sup(14)C dating and sup(13)C : sup(12)C and sup(18)O : ...