Carbon and oxygen isotope geochemistry of Neoproterozoic limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2008
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| _version_ | 1866815605527543808 |
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| author | Ramasamy Nagarajan |
| author_facet | Ramasamy Nagarajan |
| contents | Carbon and oxygen isotope geochemistry of Neoproterozoic limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India Ramasamy Nagarajan Alcides N. Sial John S. Armstrong-Altrin Jayagopal Madhavaraju Raghavendra Nagendra Ciencias de la Tierra India diagenesis Bhima basin Geochemistry delta carbon Petrography, major (including four trace elements), stable isotopes (carbon and oxygen), and 87 Sr/ 86 Sr geochemistry of limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India are reported. These limestones show a narrow range of δ 13 C (~1.34 − 1.96‰) and δ 18 O (~ -6.04 to -7.61‰) values. The petrographic study reveals the presence of microsparite and micro- and macrostylolites. The δ 13 C and 87 Sr/ 86 Sr values indicate that these limestones were deposited during the late Neoproterozoic age and the δ 18 O values also are very similar to the average Proterozoic carbonate values. Mn and Sr concentrations and low Mn/Sr ratio (<1) together with the stable and radiogenic isotope data suggest that the studied samples are well-preserved or scarcely altered limestones and probably have retained their primary isotopic signatures. 2008 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57230346003 en http://www.redalyc.org/revista.oa?id=572 Revista Mexicana de Ciencias Geológicas application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Ciencias Geológicas (México) Num.2 Vol.25 |
| format | Artículo científico |
| id | redalyc_57230346003 |
| language | en |
| publishDate | 2008 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Carbon and oxygen isotope geochemistry of Neoproterozoic limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India Ramasamy Nagarajan Ciencias de la Tierra India diagenesis Bhima basin Geochemistry delta carbon Carbon and oxygen isotope geochemistry of Neoproterozoic limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India Ramasamy Nagarajan Alcides N. Sial John S. Armstrong-Altrin Jayagopal Madhavaraju Raghavendra Nagendra Ciencias de la Tierra India diagenesis Bhima basin Geochemistry delta carbon Petrography, major (including four trace elements), stable isotopes (carbon and oxygen), and 87 Sr/ 86 Sr geochemistry of limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India are reported. These limestones show a narrow range of δ 13 C (~1.34 − 1.96‰) and δ 18 O (~ -6.04 to -7.61‰) values. The petrographic study reveals the presence of microsparite and micro- and macrostylolites. The δ 13 C and 87 Sr/ 86 Sr values indicate that these limestones were deposited during the late Neoproterozoic age and the δ 18 O values also are very similar to the average Proterozoic carbonate values. Mn and Sr concentrations and low Mn/Sr ratio (<1) together with the stable and radiogenic isotope data suggest that the studied samples are well-preserved or scarcely altered limestones and probably have retained their primary isotopic signatures. 2008 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57230346003 en http://www.redalyc.org/revista.oa?id=572 Revista Mexicana de Ciencias Geológicas application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Ciencias Geológicas (México) Num.2 Vol.25 |
| title | Carbon and oxygen isotope geochemistry of Neoproterozoic limestones of the Shahabad Formation, Bhima basin, Karnataka, southern India |
| topic | Ciencias de la Tierra India diagenesis Bhima basin Geochemistry delta carbon |
| url | https://www.redalyc.org/articulo.oa?id=57230346003 |