Strontium stratigraphy of the Oligocene–Early Miocene shellbeds of the Kutch Basin, western India, and its implications

Lethaia ◽  
2020 ◽  
Vol 53 (3) ◽  
pp. 382-395
Author(s):  
Saurav Dutta ◽  
Devapriya Chattopadhyay ◽  
Debarati Chattopadhyay ◽  
Sambuddha Misra ◽  
Alexandra V. Turchyn
Keyword(s):  
Early Miocene ◽  
Western India ◽  
Kutch Basin

scholarly journals An updated generic classification of Cenozoic pleurotomariid gastropods, with new records from the Oligocene and early Miocene of India

2021 ◽  
pp. 1-14
Author(s):  
Kanishka Bose ◽  
Shiladri S. Das ◽  
Subhronil Mondal
Keyword(s):  
Mass Extinction ◽  
Classification Scheme ◽  
New Records ◽  
Indian Subcontinent ◽  
Early Miocene ◽  
Western India ◽  
New Classification ◽  
Kutch Basin ◽  
The Family

Abstract Although taxonomically distinct, the Cenozoic pleurotomariids are the bottlenecked remnants of the Mesozoic members of the family in terms of morphology, with only conical forms surviving the end-Cretaceous mass extinction. Here, we propose an updated classification scheme for the Cenozoic representatives of this group, based on data from the entire Cenozoic pleurotomariid fossil record. We consider all conventional as well as several new characters so that this scheme can readily help to distinguish Cenozoic pleurotomariid genera. Following the new classification scheme, a revision of the generic status of Cenozoic species previously assigned to ‘Pleurotomaria’ Defrance, 1826 is presented. Only a few Cenozoic pleurotomariid gastropods have been reported from the Indian subcontinent. Here we report four species from the Oligocene of the Kutch Basin and the early Miocene (Burdigalian) of the Dwarka Basin of Gujarat, western India, of which two are described as new: Perotrochus bermotiensis n. sp., Entemnotrochus kathiawarensis n. sp., Entemnotrochus cf. E. bianconii, and Entemnotrochus? sp. 1. UUID: http://zoobank.org/89b6ff67-2834-477f-862b-67691104aca4

Mantle xenolith-xenocryst-bearing monogenetic alkali basaltic lava field from Kutch Basin, Gujarat, Western India: Estimation of magma ascent rate

2016 ◽  
Vol 312 ◽  
pp. 40-52 ◽  
Author(s):  
Arijit Ray ◽  
Kalyanbrata Hatui ◽  
Dalim Kumar Paul ◽  
Gautam Sen ◽  
S.K. Biswas ◽  
...  
Keyword(s):  
Mantle Xenolith ◽  
Magma Ascent ◽  
Western India ◽  
Basaltic Lava ◽  
Lava Field ◽  
Ascent Rate ◽  
Kutch Basin ◽  
Magma Ascent Rate

Introduction to Geology of the Kachchh (Kutch) Basin, Western India

2021 ◽  
pp. 1-36
Author(s):  
Sanjib K. Biswas ◽  
Kotha Mahender ◽  
Gaurav D. Chauhan
Keyword(s):  
Western India ◽  
Kutch Basin

Lignite deposits of the Kutch Basin, western India: Carbon isotopic and palynological signatures of the early Eocene hyperthermal event ETM2

2017 ◽  
Vol 146 ◽  
pp. 296-303 ◽  
Author(s):  
Shailesh Agrawal ◽  
Poonam Verma ◽  
M.R. Rao ◽  
Rahul Garg ◽  
Vivesh V. Kapur ◽  
...  
Keyword(s):  
Western India ◽  
Early Eocene ◽  
Carbon Isotopic ◽  
Kutch Basin ◽  
Lignite Deposits

Early Miocene mammals from central Kutch (Gujarat), Western India: Implications for geochronology, biogeography, eustacy and intercontinental dispersals

2010 ◽  
Vol 256 (1) ◽  
pp. 69-97 ◽  
Author(s):  
Ansuya Bhandari ◽  
D. M. Mohabey ◽  
Sunil Bajpai ◽  
B. N. Tiwari ◽  
Martin Pickford
Keyword(s):  
Early Miocene ◽  
Western India

Palynology, palaeoecology and palaeodepositional environment of Eocene lignites and associated sediments from Matanomadh mine, Kutch Basin, western India

2013 ◽  
Vol 82 (3) ◽  
pp. 236-248 ◽  
Author(s):  
Runcie P. Mathews ◽  
Suryakant M. Tripathi ◽  
Santanu Banerjee ◽  
Suryendu Dutta
Keyword(s):  
Western India ◽  
Kutch Basin

Oligocene reefal environment of Kutch Basin (Western India) with implications of the Mediterranean connection

1994 ◽  
Vol 21 (3) ◽  
pp. 127-129
Author(s):  
M. Mohanti ◽  
S. C. Srivastava
Keyword(s):  
Western India ◽  
Kutch Basin ◽  
The Mediterranean

Compositional evolution of siliciclastic sediments recording the tectonic stability of a pericratonic rift: Mesozoic Kutch Basin, western India

2020 ◽  
Vol 111 ◽  
pp. 476-495 ◽  
Author(s):  
Angana Chaudhuri ◽  
Santanu Banerjee ◽  
Gaurav Chauhan
Keyword(s):  
Western India ◽  
Compositional Evolution ◽  
Kutch Basin ◽  
Siliciclastic Sediments

Tracing multiple sources of sediments using trace element and Nd isotope geochemistry: provenance of the Mesozoic succession in the Kutch Basin, western India

2020 ◽  
pp. 1-16
Author(s):  
Angana Chaudhuri ◽  
Anirban Chatterjee ◽  
Santanu Banerjee ◽  
J.S. Ray
Keyword(s):  
Rare Earth ◽  
Isotope Composition ◽  
Integrated Approach ◽  
Source Rocks ◽  
Western India ◽  
Multiple Sources ◽  
High Concentration ◽  
Nd Isotope ◽  
Kutch Basin ◽  
Depleted Mantle

Abstract An integrated approach involving Sr–Nd isotope, trace and rare earth element analyses tracks multiple sources of the Mesozoic sediments of the Kutch Basin at the western continental margin of India. High (87Sr/86Sr)t (ratio at time of deposition), negative εNd and high concentrations of large-ion lithophile elements (LILEs) indicate the upper continental source. Ratios of Nb/Ta and Zr/Hf suggest sedimentary and felsic igneous sources of sediments. The moderate to high concentration of La, Th and Sc, light rare earth elements (LREE-) enrichment, weak negative Eu anomalies and the relationship between εNd(0) and Th/Sc indicate the dominantly felsic composition of source rocks. However, low contents of Th, low values of (87Sr/86Sr)t and depleted mantle model age TDM < 1600 Ma indicate input from a younger mafic source. Increasing concentrations of Zr, Hf and Nd isotopes and a gradual increase in mean TDM from the older to the younger formations indicate erosional unroofing at the source terrain. The increasing (87Sr/86Sr)t through time relates to increased weathering of the source rock. The overwhelmingly southwesterly palaeocurrent direction of current-generated sedimentary structures, and the mean TDM ages trace suggest source areas of the Kutch Basin to Precambrian rocks in the north and NE of this basin. The TDM ages highlight the dominance of late Palaeoproterozoic source rocks. Nd isotope composition indicates that Proterozoic rocks of Marwar Supergroup and Erinpura Granite, in particular, served as main sediment contributors for the Mesozoic sediments in Kutch. We therefore conclude that the Mesozoic sediments in the Kutch Basin are predominantly of late Palaeoproterozoic age with lesser inputs from rocks of early Mesoproterozoic and early Palaeoproterozoic age.

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