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  Palaeoenvironmental implications of evaporative gaylussite crystals from Lonar lake, Central India

Anoop, A., Prasad, S., Plessen, B., Basavaiah, N., Gaye, B., Naumann, R., et al. (2013). Palaeoenvironmental implications of evaporative gaylussite crystals from Lonar lake, Central India. Journal of Quaternary Science, 28(4), 349-359. doi:10.1002/jqs.2625.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0025-C1A6-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0025-C1A7-0
Genre: Journal Article

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 Creators:
Anoop, A., Author
Prasad, S., Author
Plessen, B., Author
Basavaiah, N., Author
Gaye, Birgit1, Author              
Naumann, R., Author
Menzel, P., Author
Weise, S., Author
Brauer, A., Author
Affiliations:
1B 3 - Marine and Coastal Systems, Research Area B: Climate Manifestations and Impacts, The CliSAP Cluster of Excellence, External Organizations, escidoc:1863483              

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Free keywords: evaporites; gaylussite; isotopes; Lonar Lake; monsoon
 Abstract: We have undertaken petrographic, mineralogical, geochemical and isotopic investigations on carbonate minerals found within a 10-m-long core from Lonar Lake, central India, with the aim of evaluating their potential as palaeoenvironmental proxies. The core encompasses the entire Holocene and is the first well-dated high-resolution record from central India. While calcite and/or aragonite were found throughout the core, the mineral gaylussite was found only in two specific intervals (4630–3890 and 2040–560 cal a BP). Hydrochemical and isotope data from inflowing streams and lake waters indicate that evaporitic processes play a dominant role in the precipitation of carbonates within this lake. Isotopic (δ18O and δ13C) studies on the evaporative gaylussite crystals and residual bulk carbonates (calcite) from the long core show that evaporation is the major control on δ18O enrichment in both the minerals. However, in case of δ13C additional mechanisms, for example methanogenesis (gaylussite) and phytoplankton productivity (calcium carbonate), play an additional important role in some intervals. We also discuss the relevance of our investigation for palaeoclimate reconstruction and late Holocene monsoon variability.

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Language(s): eng - English
 Dates: 2013
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1002/jqs.2625
 Degree: -

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Title: Journal of Quaternary Science
Source Genre: Journal
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Publ. Info: Chichester : John Wiley & Sons, Ltd.
Pages: - Volume / Issue: 28 (4) Sequence Number: - Start / End Page: 349 - 359 Identifier: ISSN: 0267-8179
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925500137