Tellurium and selenium in Mesoproterozoic red beds

John Parnell; Sam Spinks; Connor Brolly

doi:10.1016/j.precamres.2017.12.022

Tellurium and selenium in Mesoproterozoic red beds

John Parnell, Sam Spinks, Connor Brolly

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Abstract

Samples of red bed sediments in several Mesoproterozoic successions contain enrichments of tellurium (Te), including discrete telluride minerals. The tellurides were neoformed during redox-controlled diagenesis, rather than representing mechanical concentrations of heavy minerals. Tellurium is enriched relative to selenium, which may reflect erosion of Archean and Palaeoproterozoic rocks with high Te contents. High continentality during the Mesoproterozoic would have limited the delivery of Te and other trace elements to the oceans, so accumulated Te on the continents.

Original language	English
Pages (from-to)	145-150
Number of pages	6
Journal	Precambrian Research
Volume	305
Early online date	6 Dec 2017
DOIs	https://doi.org/10.1016/j.precamres.2017.12.022
Publication status	Published - Feb 2018

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Keywords

Tellurium
Selenium
Mesoproterozoic
diagenesis
red beds

Cite this

Parnell, J., Spinks, S., & Brolly, C. (2018). Tellurium and selenium in Mesoproterozoic red beds. Precambrian Research, 305, 145-150. https://doi.org/10.1016/j.precamres.2017.12.022

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title = "Tellurium and selenium in Mesoproterozoic red beds",

abstract = "Samples of red bed sediments in several Mesoproterozoic successions contain enrichments of tellurium (Te), including discrete telluride minerals. The tellurides were neoformed during redox-controlled diagenesis, rather than representing mechanical concentrations of heavy minerals. Tellurium is enriched relative to selenium, which may reflect erosion of Archean and Palaeoproterozoic rocks with high Te contents. High continentality during the Mesoproterozoic would have limited the delivery of Te and other trace elements to the oceans, so accumulated Te on the continents.",

keywords = "Tellurium, Selenium, Mesoproterozoic, diagenesis, red beds",

author = "John Parnell and Sam Spinks and Connor Brolly",

note = "Acknowledgements This work was supported by the NERC under Grant NE/L001764/1. We are grateful to Martin Bregman, Philip Fralick, and Phyllis Hargrave for provision of samples. David Fox and Monica leGras (CSIRO), John Still and Dave Bellis (University of Aberdeen) provided specialised technical assistance. We are grateful for three critical reviews that helped to improve the manuscript.",

year = "2018",

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doi = "10.1016/j.precamres.2017.12.022",

language = "English",

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T1 - Tellurium and selenium in Mesoproterozoic red beds

AU - Parnell, John

AU - Spinks, Sam

AU - Brolly, Connor

N1 - Acknowledgements This work was supported by the NERC under Grant NE/L001764/1. We are grateful to Martin Bregman, Philip Fralick, and Phyllis Hargrave for provision of samples. David Fox and Monica leGras (CSIRO), John Still and Dave Bellis (University of Aberdeen) provided specialised technical assistance. We are grateful for three critical reviews that helped to improve the manuscript.

PY - 2018/2

Y1 - 2018/2

N2 - Samples of red bed sediments in several Mesoproterozoic successions contain enrichments of tellurium (Te), including discrete telluride minerals. The tellurides were neoformed during redox-controlled diagenesis, rather than representing mechanical concentrations of heavy minerals. Tellurium is enriched relative to selenium, which may reflect erosion of Archean and Palaeoproterozoic rocks with high Te contents. High continentality during the Mesoproterozoic would have limited the delivery of Te and other trace elements to the oceans, so accumulated Te on the continents.

AB - Samples of red bed sediments in several Mesoproterozoic successions contain enrichments of tellurium (Te), including discrete telluride minerals. The tellurides were neoformed during redox-controlled diagenesis, rather than representing mechanical concentrations of heavy minerals. Tellurium is enriched relative to selenium, which may reflect erosion of Archean and Palaeoproterozoic rocks with high Te contents. High continentality during the Mesoproterozoic would have limited the delivery of Te and other trace elements to the oceans, so accumulated Te on the continents.

KW - Tellurium

KW - Selenium

KW - Mesoproterozoic

KW - diagenesis

KW - red beds

U2 - 10.1016/j.precamres.2017.12.022

DO - 10.1016/j.precamres.2017.12.022

M3 - Article

VL - 305

SP - 145

EP - 150

JO - Precambrian Research

JF - Precambrian Research

SN - 0301-9268

ER -

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10.1016/j.precamres.2017.12.022Licence: CC BY

Tellurium and selenium in Mesoproterozoic red beds
Under a Creative Commons license https://creativecommons.org/licenses/by/4.0/
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