Amy Riches

Amy Riches
University of Edinburgh School of Geoscience and SETI Institute

PhD

About

107
Publications
15,345
Reads
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720
Citations
Additional affiliations
January 2019 - August 2021
University of Edinburgh School of Geosciences and SETI Institute
Position
  • Researcher
July 2018 - December 2018
University of Glasgow
Position
  • Geochemistry (planetary)
July 2015 - August 2017
Durham University
Position
  • Fellow
Education
September 2004 - July 2009
The Open University (UK)
Field of study
  • Geochemistry and Igneous Petrology
October 2000 - July 2004
Durham University
Field of study
  • Geological Sciences

Publications

Publications (107)
Article
Coupled 187Os/188Os compositions and highly-siderophile-element (HSE: Os, Ir, Ru, Pt, Pd, and Re) abundance data are reported for eight angrite achondrite meteorites that include quenched- and slowly-cooled textural types. These data are combined with new major- and trace-element concentrations determined for bulk-rock powder fractions and constitu...
Article
We report the petrography, mineral and whole-rock chemistry (major-, trace-, and highly-siderophile element abundances, and osmium and oxygen isotope compositions) of a newly recognized lherzolitic shergottite, Yamato (Y) 984028. Oxygen isotopes (Δ17O = 0.218‰) confirm a martian origin for this meteorite. Three texturally distinctive internal zones...
Research
Full-text available
http://womeninastronomy.blogspot.com/2019/12/career-profiles-geochemist-to-planetary.html
Article
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https://doi.org/10.1016/j.gca.2019.05.025 Martian lava flows likely acquired S-rich material from the regolith during their emplacement on the planet’s surface. We investigated five of the twenty known nakhlites (Nakhla, Lafayette, Miller Range (MIL) 090032, Yamato 000593, and Yamato 000749) to determine whether these lavas show evidence of regoli...
Research
Full-text available
To build knowledge and enhance prospects for all geochemists, we ask all geochemists and cosmochemists in our broad-based areas of work to help by participating in the Global Geochemistry Community Survey. If relevant to you please participate by going to -> https://eag-gs.limesurvey.net/182975.
Preprint
Full-text available
I'm sure you'd like to know the focus, but all shall be revealed in due course.
Preprint
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https://geoscienceforthefuture.com/first-gen-geoscience/
Research
https://www.chemistryworld.com/careers/exploring-the-space-economy/4013893.article
Preprint
An exploration of employment opportunities in space and planetary science. Accepted by ChemistryWorld, and to be published in August.
Article
Full-text available
Diversity, at every step along the scientific path, drives innovative research. Scientific societies, like the Geochemical Society (GS) and the European Association of Geochemistry (EAG), have a significant influence over which discoveries and innovators are celebrated. Such choices impact the future of research, and therefore influence the evoluti...
Preprint
Full-text available
“Knowledge belongs to humanity, and is the torch which illuminates the world.” – Louis Pasteur
Article
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https://www.chemistryworld.com/opinion/letters-march-2021/4013262.article
Conference Paper
Find here - https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/Paper/7155
Conference Paper
Full-text available
Find here - https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/Paper/7356
Preprint
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This contribution examines the context for the newly-founded Diversity, Equity, and Inclusion (DEI) Committee of the European Association of Geochemistry. The report summarises the work to advance DEI undertaken during 2020 under conditions of the COVID-19 global pandemic, acknowledges the various impacts for community members, and takes a forward...
Research
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EAG blog / article contribution January 2021. https://blog.eag.eu.com/advance-dei-pandemic-post-pandemic/
Research
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Open access blog for the public. Available at this link: https://ajvriches.wixsite.com/website/post/divided-worlds-coming-soon
Preprint
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Published online - open access. https://blog.eag.eu.com/writing-for-change/ November 2020. Feature with the European Association of Geochemistry
Conference Paper
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Establishing the distribution and history of bioessential elements, e.g., C-H-N-O-P-S, among Martian meteorites is fundamentally important to understanding potential habitability beyond Earth. The Tissint meteorite, an observed fall with a crystallisation age of 547 ± 20 Ma1, was shocked at ≥29 GPa during impact ejection at ~1 Ma2 and preserves a r...
Preprint
Full-text available
To examine how the mantle lithosphere stabilises continents, we present a synthesis of the mantle beneath Zealandia in the SW Pacific Ocean. Zealandia, Earth's "8th continent", occurs over 4.9 M km 2 and comprises a fore-arc, arc and back-arc fragment rifted from the Australia-Antarctica Gondwana margin 85 Myr ago. The oldest extant crust is ∼500 M...
Article
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Free access for 50 days at https://authors.elsevier.com/c/1YFFy,Ig4DCoi To examine how the mantle lithosphere stabilises continents, we present a synthesis of the mantle beneath Zealandia in the SW Pacific Ocean. Zealandia, Earth’s “8th continent”, occurs over 4.9 M km2 and comprises a fore-arc, arc and back-arc fragment rifted from the Australia...
Article
While the mantle roots directly beneath Archean cratons have been relatively well studied because of their economic importance, much less is known about the genesis, age, composition and thickness of the mantle lithosphere beneath the regions that surround the cratons. Despite this knowledge gap, it is fundamentally important to establish the natur...
Conference Paper
Full-text available
The sulphur isotopic characteristics of Martian meteorites, including mass independent fractiona-tion, suggest that magmatic assimilation of sulphur occurred throughout the planet's geological history. Sulphur isotope ratios can be fractionated by three main processes: hydrothermal, photochemical, and biological. Large isotopic fractionations of δ...
Conference Paper
Full-text available
Geochemical and geophysical data suggest that the martian mantle retained heat from Mars formation, and that it could still be actively convecting [e.g., 1]. Here we try to infer thermodynamical information related to martian mantle activity via mineralogical data acquired from olivine and pyroxene in the Tissint martian meteorite, with a crystalli...
Conference Paper
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Introduction: Geochemical and geophysical data suggest that the martian mantle retained heat from Mars formation, and that it could still be actively convecting [e.g., 1]. Here we try to infer thermodynamical information related to martian mantle activity via mineralogical data acquired from olivine and pyroxene in the Tissint martian meteorite. Ti...
Conference Paper
Full-text available
Tissint is an exceptional martian sample, because it is an unusual depleted olivine-phyric shergottite that could testify to the composition of melts derived from the martian mantle and, despite being a find, it is remarkably fresh. The rock's crystallization age is ~574 ± 20 Ma, based on Rb–Sr and Sm–Nd isotopic systematics. We here report major e...
Conference Paper
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Highly siderophile elements (HSE: Re, Au, Os, Ir, Ru, Pt, Rh, and Pd) are particularly important in constraining planetary formation and evolution processes and they exhibit chalcophile element behaviour in the absence of metals, preferring to partition into sulphides. Rhenium-osmium isotope data for the nakhlite martian meteorites are currently li...
Article
Re-Os and platinum group element analyses are reported for peridotite xenoliths from the 533 Ma Venetia kimberlite cluster situated in the Limpopo Mobile Belt, the Neoarchaean collision zone between the Kaapvaal and Zimbabwe Cratons. The Venetian xenoliths provide a rare opportunity to examine the state of the cratonic lithosphere prior to major re...
Conference Paper
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Introduction: The only available rock samples from Mars are represented by the Martian meteorites, roughly divided into shergottites (basalts), nakhlites (clinopyroxenites), and chassignites (olivine cumulates), with some exception. Crystallization ages of these mantle-derived rocks are different, from around 4.4 Ga to a few hundred Ma, and this re...
Research
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A summary of the activities and outcomes arising from the 4th International Workshop on Highly Siderophile Element Geochemistry Elements v12(6), p. 446
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A summary of what the Geochemical Society's MAP support enabled with respect to the 4th International Workshop on Highly Siderophile Element Geochemistry Elements v12(5), p. 365
Research
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A summary of the activities and outcomes of the 4th International Workshop on Highly Siderophile Element Geochemistry http://blog.eag.eu.com/general/hseworkshop/
Conference Paper
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Rhenium and osmium are highly siderophile elements (HSE) that can help in revealing the genesis of asteroidal and planetary cores and mantles. In particular, the 187Re-187Os isotope system can be used to answer key issues in planetology and cosmochemistry, as insights on core formation, early differentiation, and late accretion events in terrestria...
Conference Paper
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Introduction: Platinum group element (PGE) abundances and Os-isotope compositions determined for magmas of Earth, the Moon, Mars, and asteroidal bodies place important constraints on planetary evolution and these data are fundamental to our understanding of the addition of material to silicate mantles following core formation [e.g., 1-3]. The absol...
Conference Paper
http://www.hseworkshop.co.uk/programme Page 42
Conference Paper
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Introduction: Platinum group element (PGE) abundances & osmium-isotope compositions determined for magmas of Earth, the Moon, Mars, & aster-oidal bodies place important constraints on planetary evolution and these data are a fundamental basis for theories concerning the addition of material to planetary mantles following core formation [e.g., 1-3]....
Article
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A subducted oceanic crustal origin for most eclogite xenoliths in kimberlites has long been a cornerstone of tectonic models for craton development. However, eclogite xenoliths often have protracted and complex histories involving multiple metasomatic events that could overprint some of the key geochemical indicators typically taken as evidence of...
Article
Full-text available
Canada is host to at least six separate cratons that comprise a significant proportion of its crustal extent. Of these cratons, we possess knowledge of the cratonic lithospheric roots beneath only the Slave craton and, to a lesser extent, the Superior craton, despite the discovery of many new diamond-bearing kimberlites in Canada's North. Here we p...
Working Paper
A subducted oceanic crustal origin for most eclogite xenoliths in kimberlites has long been a cornerstone of tectonic models for craton development. However, eclogite xenoliths often have protracted and complex histories involving multiple metasomatic events that could overprint some of the key geochemical indicators typically taken as evidence of...
Conference Paper
The age, composition and extent of Archean lithosphere is well documented beneath the Slave Craton, however, little is known about the deep continental roots beneath the rest of Canada’s vast north, despite the discovery of many new diamond-bearing kimberlites. Here we present age and composition information for kimberlite-borne peridotite xenolith...