Anomalous phosphorus episodes during Callovian-Oxfordian times in the Kachchh Basin, western India: Implications for palaeoclimate, productivity, and weathering

Ramkumar M, Alberti M, Fürsich F, Pandey DK (2012)

Publication Language: English

Publication Type: Journal article

Publication year: 2012

Journal

Chemie Der Erde-Geochemistry Elsevier

Book Volume: 72

Pages Range: 141-148

Journal Issue: 2

DOI: 10.1016/j.chemer.2012.01.002

Abstract

The Upper Callovian-Oxfordian strata of the Kachchh Basin, western India, record three positive excursions of phosphorus. They have been documented in three sections of the Chari Formation from different parts of the basin. Corroboration of field and petrographic data with trends of major and trace elemental data and elemental ratios of the strata revealed that these excursions were coeval with reduced chemical weathering in the source area and significant reduction of siliciclastic influx to the depositional sites. The study also revealed the intrabasinal source of P, and minor sea-level fluctuations and resultant episodic sediment recycling as the causative factors. Considering the geographic locations of the three sections, the phosphorus anomalies seem to be controlled by a regional and/or basin-scale process, if not linked with global signals. Temporal resolution of these anomalies suggests that the processes were episodic and related to short term climate/relative sea-level cycles, the durations of which could be unraveled with high-resolution biostratigraphic data. © 2012 Elsevier GmbH.

Authors with CRIS profile

Franz Fürsich Naturwissenschaftliche Fakultät

Involved external institutions

Periyar University IN India (IN) Christian-Albrechts-Universität zu Kiel DE Germany (DE) University of Rajasthan IN India (IN)

How to cite

APA:

Ramkumar, M., Alberti, M., Fürsich, F., & Pandey, D.K. (2012). Anomalous phosphorus episodes during Callovian-Oxfordian times in the Kachchh Basin, western India: Implications for palaeoclimate, productivity, and weathering. Chemie Der Erde-Geochemistry, 72(2), 141-148. https://dx.doi.org/10.1016/j.chemer.2012.01.002

MLA:

Ramkumar, Muthuvairavasamy, et al. "Anomalous phosphorus episodes during Callovian-Oxfordian times in the Kachchh Basin, western India: Implications for palaeoclimate, productivity, and weathering." Chemie Der Erde-Geochemistry 72.2 (2012): 141-148.

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