465c8ae2-aa70-015b-e054-002128a47908
English
nonGeographicDataset
non geographic dataset
British Geological Survey
+44 115 936 3100
Environmental Science Centre,Keyworth
NOTTINGHAM
NOTTINGHAMSHIRE
NG12 5GG
United Kingdom
enquiries@bgs.ac.uk
pointOfContact
2024-03-27
UK GEMINI
2.3
http://data.bgs.ac.uk/id/dataHolding/13607077
Melting in the Deep Earth (NERC grants NE/I010734/1 and NE/I010947/1)
2014-12
publication
http://data.bgs.ac.uk/id/dataHolding/13607077
Published paper from grant NE/I010734/1, Modeling the melting of multicomponent systems: the case of MgSiO3 perovskite under lower mantle conditions by Cono Di Paola and John P. Brodholt doi: 10.1038%2Fsrep29830 Two published papers from NERC grant NE/I010947/; Thomson et al AmMin 2014 Experimental Determination of Melting in the systems Enstatite-Magnesite and Magnesite-Calcite from 15 to 80 GPa http://dx.doi.org/10.2138/am.2014.4735 Lord et al EPSL 2014 The Melting Curve of Ni to 1 Mbar http://dx.doi.org/10.1016/j.epsl.2014.09.046 Grant Abstract: Melting in the Earth has a huge effect on its chemical and physical state. For instance, the chemistry of the crust, the mantle and the atmosphere are largely controlled by melting and crystalisation at mid-ocean ridges, hotspots or island arcs. There has, therefore, been an enormous effort in the last decades to understand these shallow melting processes. Yet much deeper melts may have been equally influential in the evolution of the Earth. For instance, it is generally accepted that a deep magma ocean perhaps extending to the Earth's centre, existed early its history. This was the result of multiple impacts as the Earth accreted. From this magma ocean, iron melts separated from silicate melts to form the core, volatiles degassed to form an early atmosphere, and a proto-crust may have formed. It is also accepted that the Earth was hit by a Mars-sized body to create the moon; this too would have caused enormous amounts of melting in the deep Earth. Moreover, there is some evidence for melting in the deep Earth now. It is possible, therefore, that melts in the deepest Earth have existed throughout Earth's history. However, many basic data on the physical and chemical properties of deep melting do not exist. For instance, we don't know the melting curves for mantle minerals and rocks at the pressure and temperatures of the deep Earth. We don't know which minerals crystalise from these melts first (the liquidus phases). We don't know the composition of partial melts of deep mantle rocks or rocks which have been subducted. We don't know the relative densities of the rocks and their melts, and so we do not even know whether minerals float of sink in these deep melts. This lack of data has led to much speculation on the effect of deep melts on the Earth's evolution. For instance, it has been suggested that geophysical and geochemical anomalies in the Earth's mantle have deep early melts as their origin. But these models depend of the chemical and physical properties of the melts and crystalline solids, properties that are simply not known. This project will use novel experiments in conjunction with ab initio modelling obtain these data. The data will provide the chemical and physical foundation on which all future models of the Earths early crystallization and subsequent evolution will be based.
Professor Michael Walter
University of Bristol
School of Earth Sciences
Wills Memorial Building, Queens Road, Clifton
Bristol
BS8 1RJ
not available
pointOfContact
Professor John Brodholt
University College London
Department of Earth Sciences
Gower Street
London
WC1E 6BT
not available
pointOfContact
notApplicable
https://resources.bgs.ac.uk/images/geonetworkThumbs/465c8ae2-aa70-015b-e054-002128a47908.png
Geology
GEMET - INSPIRE themes, version 1.0
2008-06-01
publication
NGDC Deposited Data
Melting points
Nickel
BGS Thesaurus of Geosciences
2022
revision
NGDC Deposited Data
dataCentre
NERC_DDC
otherRestrictions
no limitations
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.
otherRestrictions
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.
Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
English
geoscientificInformation
2014-12
NERC split award, lead grant NE/I010734/1, associated grant NE/I010947/1)
http://dx.doi.org/10.1016/j.epsl.2014.09.046
download
http://dx.doi.org/10.2138/am.2014.4735
download
https://dx.doi.org/10.1038%2Fsrep29830
download
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item72909
download
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item72029
download
nonGeographicDataset
non geographic dataset
INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology
2011
publication
See the referenced specification
false
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
2010-12-08
publication
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
false
Published papers may contain lineage information.