A Caltech Library Service

Cenomanian-Turonian sea-level transgression and OAE2 deposition in the Western Narmada Basin, India

Keller, Gerta and Nagori, Madan L. and Chaudhary, Maya and Reddy, A. Nallapa and Jaiprakash, B. C. and Spangenberg, Jorge E. and Mateo, Paula and Adatte, Thierry (2021) Cenomanian-Turonian sea-level transgression and OAE2 deposition in the Western Narmada Basin, India. Gondwana Research, 94 . pp. 73-86. ISSN 1342-937X. doi:10.1016/

[img] PDF - Accepted Version
See Usage Policy.

[img] Archive (ZIP) - Supplemental Material
Creative Commons Attribution.


Use this Persistent URL to link to this item:


We report the Narmada Seaway began in India during the largest global sea-level transgression and Oceanic Anoxic Event 2 (OAE2) δ¹³C excursion during the late Cenomanian to early Turonian. The transgression progressed eastward during the Turonian-Coniacian and reached Jhilmili by the end of the Maastrichtian. During this time the Narmada and Godavari Seaways may have joined via the Narmada-Tapti rift and formed a Trans-India Seaway. The history of this major seaway is entombed in a fossil-rich marine transgression of the tectonically active Narmada rift zone. We examined this transgression in the western Narmada Basin, Gujarat, to improve age control based on planktic foraminifera and ostracods and evaluate paleoenvironmental changes based on the Cenomanian-Turonian OAE2 δ¹³C excursion, δ¹⁸O records, and mercury concentrations in sediments as index for volcanic eruptions. Results reveal the onset of the OAE2 δ¹³C excursion began in the western Narmada Basin during the late Cenomanian coeval with the sea-level transgression and first influx of planktic and benthic foraminifera in the Nimar Sandstone that overlies Archean rocks. The OAE2 δ¹³C excursion peak was recorded in oyster biostromes followed by fluctuating values of the δ¹³C plateau in the overlying Limestone with oysters beds, and gradual decrease to background values by the early Turonian. We tested the age of the transgression and δ¹³C excursion based on planktic foraminifera and ostracod biostratigraphy and successfully compared the results with the Pueblo, Colorado, Global Section and Stratotype Point (GSSP), and the eastern Sinai Wadi El Ghaib section of Egypt.

Item Type:Article
Related URLs:
URLURL TypeDescription ItemData
Additional Information:© 2021 International Association for Gondwana Research. Published by Elsevier B.V. Received 3 July 2020, Revised 15 January 2021, Accepted 25 February 2021, Available online 3 March 2021. We thank the four anonymous reviewers for their very helpful comments that helped improve this study. We thank Professor Jahnavi Punekar (Department of Earth Sciences, IIT Bombay) for discussions and her graduate student, Mr. Sooraj C.P., for processing samples. Partial funding for analytical studies was provided by Princeton University through the Geosciences Department's Tuttle and Scott funds. MLN and MC are thankful to the coordinator (SAP) in the Department of Geology, Mohanlal Sukhadia University, Udaipur, for providing financial support to carry out the fieldwork. Special thanks to the Ministry of Human Resource Development, Government of India, for supporting this project through the National Mission Directorate under the RUSA 2 scheme, Government of Rajasthan, support should be listed as part of the Ministry of Human Resource Development, Government of India, India. Author Contributions: Gerta Keller: Conceptualization; Data curation; Formal analysis; Funding acquisition; Investigation; Methodology; Project administration; Resources; Supervision; Validation; Visualization; Writing - original draft; Writing - review & editing. Madan Nagori: Funding acquisition; Investigation; Methodology; Resources; Writing - review & editing. Maya Chaudhary: Investigation; Methodology; Resources; Writing - review & editing. Nallapa A. Reddy: Investigation; Methodology; Resources; Writing - review & editing. B.C. Jaiprakash: Investigation; Methodology; Resources; Validation; Writing - review & editing. Jorge E. Spangenberg: Investigation; Methodology; Resources; Writing - review & editing. Paula Mateo: Conceptualization; Investigation; Project administration; Visualization; Writing - review & editing. Thierry Adatte: Investigation; Methodology; Resources. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Funding AgencyGrant Number
Princeton UniversityUNSPECIFIED
Mohanlal Sukhadia UniversityUNSPECIFIED
Ministry of Human Resource Development (India)UNSPECIFIED
Government of RajasthanUNSPECIFIED
Subject Keywords:Narmada Valley; Interior Seaway; Gujarat; Cenomanian-Turonian OAE2; Planktic foraminifera; Ostracods
Record Number:CaltechAUTHORS:20210303-134110637
Persistent URL:
Official Citation:Gerta Keller, Madan L. Nagori, Maya Chaudhary, A. Nallapa Reddy, B.C. Jaiprakash, Jorge E. Spangenberg, Paula Mateo, Thierry Adatte, Cenomanian-Turonian sea-level transgression and OAE2 deposition in the Western Narmada Basin, India, Gondwana Research, Volume 94, 2021, Pages 73-86, ISSN 1342-937X, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108294
Deposited By: Tony Diaz
Deposited On:03 Mar 2021 21:52
Last Modified:16 Nov 2021 19:10

Repository Staff Only: item control page