BGS Data Catalogue
Nannofossil assemblage data IODP expedition U359 (NERC grant NE/N014049/1)
Nannofossil assemblage data IODP expedition U359 produced from NERC Grant NE/N014049/1. Data collected from the Maldives, Indian Ocean. NERC grant award abstract: IOPD Expedition 359, Sea Level, Currents, and Monsoon Evolution in the Indian Ocean will be investigating the Maldives Ridge which stretches southward through the Indian Ocean as a double chain of coral atolls. These atolls lie along a volcanic ridge which formed over a mantle hotspot as the Indian plate moved northwards. As the ridge cooled it subsided to be replaced at the surface by the string of atolls and between them deeper troughs.Within these troughs vast thicknesses of carbonate sediments derived from the ridge have built up intermixed with open ocean sediments. These sediments provide a unique opportunity to examine the relationships between open ocean planktonic carbonates and shallow marine carbonates - which normally are difficult to compare. This project seeks to exploit this opportunity to see whether there are any consistent correlations between changes in the pelagic carbonate producing coccolithophores and the shallow marine carbonate system. If such correlations do occur it will provide strong evidence that abiotic factors such as temperature and sea water chemistry have strong influences on large scale evolution of these systems. Conversely if no such linkages can be observed it will cal into question the degree to which changes in for instance coccolithophore abundance or calcification are interpreted as being caused by abiotic factors. The great thicknesses of the successions also mean that intervals of abrupt change in plankton assemblages can be studied at higher resolution than is normally possible. This will provide the opportunity to test if such changes are caused by environmental events. The project will specifically focus on size variation in the dominant group of coccolithophores the reiticulofenestrids. This group shows a long term size reduction but this is formed of series of abrupt size reduction events separated by extended intervals of size increase. This will be the first time the set of size reduction events from the middle Miocene to the recent have been studied systematically in one place as well as testing to see if they correlate with change in environmental proxies or changes in the shallow marine carbonate system.
Default
Identification info
- Metadata Language
- English (en)
- Dataset Reference Date ()
- 2016-09-30
University College London
-Professor Paul Bown
(Earth Sciences
)Kathleen Lonsdale
,London
,WC1E 6BT
,- Maintenance and update frequency
- notApplicable
- GEMET - INSPIRE themes
- BGS Thesaurus of Geosciences
-
-
Microfossils
-
Fossil assemblage
-
- Keywords
-
-
NERC_DDC
-
- Limitations on Public Access
- otherRestrictions
- Other constraints
- no limitations
- Other constraints
- The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
- Use constraints
- otherRestrictions
- Other constraints
-
The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
- Other constraints
-
The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage. iprdigital@bgs.ac The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk) if further advice is required with regard to permitted usage.
- Topic category
-
- Geoscientific information
- Extent
-
MALDIVES [id=922500]
- Dataset Reference Date ()
- 1979
- Extent
-
MDV
- Dataset Reference Date ()
- 2009
- Extent
-
MV
- Dataset Reference Date ()
- 2009
))
- Begin date
- 2016-02-01
- End date
- 2016-09-30
- Additional information
-
NERC grant NE/N014049/1
Spatial Reference System
Distribution Information
- Data format
-
- Resource Locator
- http://iodp.tamu.edu/scienceops/expeditions/maldives_monsoon.html
- Resource Locator
- http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item73709
- Resource Locator
- http://iodp.tamu.edu/scienceops/expeditions/maldives_monsoon.html
- Resource Locator
- http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item73709
- Quality Scope
- dataset
- Other
-
dataset
Report
- Dataset Reference Date ()
- 2011
- Explanation
-
See the referenced specification
- Degree
Report
- Dataset Reference Date ()
- 2010-12-08
- Explanation
-
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
- Degree
- Statement
-
No lineage information provided.
Metadata
- File identifier
- 49d19acc-aad6-0d57-e054-002128a47908 XML
- Metadata Language
- English (en)
- Resource type
- dataset
- Metadata Date
- 2022-09-26
- Metadata standard name
- UK GEMINI
- Metadata standard version
-
2.3
British Geological Survey
Environmental Science Centre,Keyworth
,NOTTINGHAM
,NOTTINGHAMSHIRE
,NG12 5GG
,United Kingdom
