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Rohtasgarh Limestone

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Journal Article
Journal: Geology
Published: 01 February 2002
Geology (2002) 30 (2): 131–134.
... and carbonaceous megafossils. New U-Pb zircon and 87 Sr/ 86 Sr isotopic data from the Lower Vindhyan Supergroup require that the rocks are latest Paleoproterozoic to earliest Mesoproterozoic in age. Two rhyolitic volcanic horizons from the Deonar Formation, between the Kajrahat and Rohtasgarh Limestones and below...
FIGURES
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Figure 1. Generalized geologic map of Vindhyan Supergroup of east-central I...
in > Geology
Published: 01 February 2002
Limestone (1), Rohtasgarh Limestone (2), and Bhander Limestone (3). Arrows show positions of horizons containing small shelly fossils (SSF) and articulate brachiopods, and trace fossils. Location 2 on map is also location of small shelly fossils (and articulate brachiopods). Trace fossils were reported
Image
Figure 3.  87 Sr/ 86 Sr data for Precambrian marine carbonates plotted  aga...
in > Geology
Published: 01 February 2002
Sr/ 86 Sr during Precambrian. Lowest 87 Sr/ 86 Sr values of Vindhyan limestones are shown plotted against this curve. Age of 1700 Ma is assumed for Kajrahat Limestone, whereas 87 Sr/ 86 Sr ratios for Rohtasgarh Limestone and Bhander Limestone intersect seawater curve ca. 1200 Ma and ca. 750 Ma
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Carbonate  δ  13 C and  δ  18 O values of samples from the Revett Formation...
Published: 01 September 2012
. (2007) ; from the Paranoá Group, central Brazil, from Santos et al. (2000) ; from the Rohtasgarh Limestone, northern India, from Ray et al. (2003) ; from the Carswell Formation, Saskatchewan, from Abell et al. (1989) ; and from the Svetlyi Formation, eastern Siberia, from Bartley et al. (2001
Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2007
DOI: 10.1144/SP286.22
EISBN: 9781862395343
..., thus indicating an absence of Late Proterozoic organisms in the Vindhyan sequence of India. Azmi (1998) reported a variety of small shelly fossils from the topmost part of the Rohtasgarh Limestone and Shale in the Semri Group in the lower part of the Vindhyan sequence from two areas, Maihar...
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Journal Article
Published: 02 October 2018
Canadian Journal of Earth Sciences (2019) 56 (3): 335–346.
... largely mimics the global pattern ( Fig. 8A ). Similar to the Paleoproterozoic and early Mesoproterozoic global values, the δ 13 C from the lower Vindhyans, which include the ∼1.72 Ga Kajrahat, Salkhan, and the ∼1.6 Ga Rohtasgarh limestones and their equivalents, fall within 0‰ ± 2‰. The late...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2012
DOI: 10.1144/SP365.13
EISBN: 9781862396135
...) , Kumar (2001) , Azmi et al. (2007) 9 Rohtasgarh Limestone Palaeo-Mesoproterozoic Katnia Singhii , Grypania Tandon & Kumar (1977) , Sharma & Shukla (2009 a , b ) 10 Rampur Shale/Chorhat Sandstone Neoproterozoic, Cambrian/Ordovician, Palaeoproterozoic Triploblastic animal...
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Journal Article
Journal: Economic Geology
Published: 01 September 2012
Economic Geology (2012) 107 (6): 1223–1249.
.... (2007) ; from the Paranoá Group, central Brazil, from Santos et al. (2000) ; from the Rohtasgarh Limestone, northern India, from Ray et al. (2003) ; from the Carswell Formation, Saskatchewan, from Abell et al. (1989) ; and from the Svetlyi Formation, eastern Siberia, from Bartley et al. (2001...
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