Global continental weathering trends across the Early Permian glacial to postglacial transition: correlating high- and low-paleolatitude sedimentary records

Jianghai Yang; Peter A. Cawood; Yuansheng Du; Bin Feng; Jiaxin Yan

doi:10.1130/G35892.1

Global continental weathering trends across the Early Permian glacial to postglacial transition: correlating high- and low-paleolatitude sedimentary records

Jianghai Yang^*, Peter A. Cawood, Yuansheng Du, Bin Feng, Jiaxin Yan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Time-equivalent Early Permian sedimentary successions from high-latitude Gondwana basins and from equatorial accumulations in North China, covering the glacial to postglacial transition, display correlatable trends in continental weathering intensity based on chemical index of alteration (CIA) values. The successions display a pattern of CIA values that varies with latitude, similar to modern estuarine suspended sediments. Based on the modern-day CIA-temperature correlation, the glacial Early Permian low- to high-latitude land surface temperature gradient is estimated as ~ 20 ºC, slightly higher than the calculated values for the contemporaneous sea-surface temperature gradient.

Original language	English
Pages (from-to)	835-838
Number of pages	4
Journal	Geology
Volume	42
Issue number	10
Early online date	15 Aug 2014
DOIs	https://doi.org/10.1130/G35892.1
Publication status	Published - Oct 2014

Keywords

Late paleozoic glaciation
Geochemical proxies
Climate evolution1
Chemical index
Parana Basin
South-Africa
Australia
Gondwana
Provenance
Brazil

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Cawood_2015_Geology_GlobalContinental_AAM
© 2014 Geological Society of America. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://dx.doi.org/10.1130/G35892.1
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Cite this

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title = "Global continental weathering trends across the Early Permian glacial to postglacial transition: correlating high- and low-paleolatitude sedimentary records",

abstract = "Time-equivalent Early Permian sedimentary successions from high-latitude Gondwana basins and from equatorial accumulations in North China, covering the glacial to postglacial transition, display correlatable trends in continental weathering intensity based on chemical index of alteration (CIA) values. The successions display a pattern of CIA values that varies with latitude, similar to modern estuarine suspended sediments. Based on the modern-day CIA-temperature correlation, the glacial Early Permian low- to high-latitude land surface temperature gradient is estimated as ~ 20 ºC, slightly higher than the calculated values for the contemporaneous sea-surface temperature gradient.",

keywords = "Late paleozoic glaciation, Geochemical proxies, Climate evolution1, Chemical index, Parana Basin, South-Africa, Australia, Gondwana, Provenance, Brazil ",

author = "Jianghai Yang and Cawood, {Peter A.} and Yuansheng Du and Bin Feng and Jiaxin Yan",

year = "2014",

month = oct,

doi = "10.1130/G35892.1",

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AU - Du, Yuansheng

AU - Feng, Bin

AU - Yan, Jiaxin

PY - 2014/10

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N2 - Time-equivalent Early Permian sedimentary successions from high-latitude Gondwana basins and from equatorial accumulations in North China, covering the glacial to postglacial transition, display correlatable trends in continental weathering intensity based on chemical index of alteration (CIA) values. The successions display a pattern of CIA values that varies with latitude, similar to modern estuarine suspended sediments. Based on the modern-day CIA-temperature correlation, the glacial Early Permian low- to high-latitude land surface temperature gradient is estimated as ~ 20 ºC, slightly higher than the calculated values for the contemporaneous sea-surface temperature gradient.

AB - Time-equivalent Early Permian sedimentary successions from high-latitude Gondwana basins and from equatorial accumulations in North China, covering the glacial to postglacial transition, display correlatable trends in continental weathering intensity based on chemical index of alteration (CIA) values. The successions display a pattern of CIA values that varies with latitude, similar to modern estuarine suspended sediments. Based on the modern-day CIA-temperature correlation, the glacial Early Permian low- to high-latitude land surface temperature gradient is estimated as ~ 20 ºC, slightly higher than the calculated values for the contemporaneous sea-surface temperature gradient.

KW - Late paleozoic glaciation

KW - Geochemical proxies

KW - Climate evolution1

KW - Chemical index

KW - Parana Basin

KW - South-Africa

KW - Australia

KW - Gondwana

KW - Provenance

KW - Brazil

U2 - 10.1130/G35892.1

DO - 10.1130/G35892.1

M3 - Article

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JF - Geology

IS - 10

ER -

Global continental weathering trends across the Early Permian glacial to postglacial transition: correlating high- and low-paleolatitude sedimentary records

Abstract

Keywords

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