Standard

Redox-dependent distribution of early macro-organisms : Evidence from the terminal Ediacaran Khatyspyt Formation in Arctic Siberia. / Cui, Huan; Grazhdankin, Dmitriy V.; Xiao, Shuhai et al.

In: Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 461, 01.11.2016, p. 122-139.

Research output: Contribution to journalArticlepeer-review

Harvard

Cui, H, Grazhdankin, DV, Xiao, S, Peek, S, Rogov, VI, Bykova, NV, Sievers, NE, Liu, XM & Kaufman, AJ 2016, 'Redox-dependent distribution of early macro-organisms: Evidence from the terminal Ediacaran Khatyspyt Formation in Arctic Siberia', Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 461, pp. 122-139. https://doi.org/10.1016/j.palaeo.2016.08.015

APA

Cui, H., Grazhdankin, D. V., Xiao, S., Peek, S., Rogov, V. I., Bykova, N. V., Sievers, N. E., Liu, X. M., & Kaufman, A. J. (2016). Redox-dependent distribution of early macro-organisms: Evidence from the terminal Ediacaran Khatyspyt Formation in Arctic Siberia. Palaeogeography, Palaeoclimatology, Palaeoecology, 461, 122-139. https://doi.org/10.1016/j.palaeo.2016.08.015

Vancouver

Cui H, Grazhdankin DV, Xiao S, Peek S, Rogov VI, Bykova NV et al. Redox-dependent distribution of early macro-organisms: Evidence from the terminal Ediacaran Khatyspyt Formation in Arctic Siberia. Palaeogeography, Palaeoclimatology, Palaeoecology. 2016 Nov 1;461:122-139. doi: 10.1016/j.palaeo.2016.08.015

Author

Cui, Huan ; Grazhdankin, Dmitriy V. ; Xiao, Shuhai et al. / Redox-dependent distribution of early macro-organisms : Evidence from the terminal Ediacaran Khatyspyt Formation in Arctic Siberia. In: Palaeogeography, Palaeoclimatology, Palaeoecology. 2016 ; Vol. 461. pp. 122-139.

BibTeX

@article{7789c85b147c45feb7ed26f22a87264f,
title = "Redox-dependent distribution of early macro-organisms: Evidence from the terminal Ediacaran Khatyspyt Formation in Arctic Siberia",
abstract = "The Ediacaran Period witnessed the first appearance of macroscopic animal life in Earth's history. However, the biogeochemical context for the stratigraphic occurrence of early metazoans is largely uncertain, in part due to the dearth of integrated paleobiological and chemostratigraphic datasets. In this study, a comprehensive geochemical analysis was conducted on the fossiliferous Khatyspyt Formation in Arctic Siberia, in order to gain insights into the Ediacaran paleoenvironments. This study was designed to specifically address the relationship between paleoredox conditions and Ediacaran fossil occurrences in the Khatyspyt Formation. Our data reveal a dramatic shift in pyrite sulfur isotope compositions (δ34Spyrite) from ca. − 20‰ to ca. 55‰, and this shift is intriguingly associated with the first occurrence of Ediacara-type macrofossils at the studied section, suggesting a possible link between seawater redox conditions and distribution of early macroscopic organisms. Based on multiple lines of sedimentological and geochemical evidence, we propose that the development of oceanic euxinia — which may be widespread in the continental margins due to enhanced oxidative weathering in the terminal Ediacaran Period — may have locally prohibited the colonization of Ediacara-type organisms and resulted in low δ34Spyrite values in the lower Khatyspyt Formation. In the middle and upper Khatyspyt Formation, progressive secular transition from euxinic to non-euxinic and more habitable conditions may have allowed for the colonization of Ediacara-type and other macro-organisms.",
keywords = "Carbon and sulfur cycles, Chemostratigraphy, Early macro-organism distribution, Oceanic euxinia, Redox condition, Superheavy pyrite",
author = "Huan Cui and Grazhdankin, {Dmitriy V.} and Shuhai Xiao and Sara Peek and Rogov, {Vladimir I.} and Bykova, {Natalia V.} and Sievers, {Natalie E.} and Liu, {Xiao Ming} and Kaufman, {Alan J.}",
year = "2016",
month = nov,
day = "1",
doi = "10.1016/j.palaeo.2016.08.015",
language = "English",
volume = "461",
pages = "122--139",
journal = "Palaeogeography, Palaeoclimatology, Palaeoecology",
issn = "0031-0182",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Redox-dependent distribution of early macro-organisms

T2 - Evidence from the terminal Ediacaran Khatyspyt Formation in Arctic Siberia

AU - Cui, Huan

AU - Grazhdankin, Dmitriy V.

AU - Xiao, Shuhai

AU - Peek, Sara

AU - Rogov, Vladimir I.

AU - Bykova, Natalia V.

AU - Sievers, Natalie E.

AU - Liu, Xiao Ming

AU - Kaufman, Alan J.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - The Ediacaran Period witnessed the first appearance of macroscopic animal life in Earth's history. However, the biogeochemical context for the stratigraphic occurrence of early metazoans is largely uncertain, in part due to the dearth of integrated paleobiological and chemostratigraphic datasets. In this study, a comprehensive geochemical analysis was conducted on the fossiliferous Khatyspyt Formation in Arctic Siberia, in order to gain insights into the Ediacaran paleoenvironments. This study was designed to specifically address the relationship between paleoredox conditions and Ediacaran fossil occurrences in the Khatyspyt Formation. Our data reveal a dramatic shift in pyrite sulfur isotope compositions (δ34Spyrite) from ca. − 20‰ to ca. 55‰, and this shift is intriguingly associated with the first occurrence of Ediacara-type macrofossils at the studied section, suggesting a possible link between seawater redox conditions and distribution of early macroscopic organisms. Based on multiple lines of sedimentological and geochemical evidence, we propose that the development of oceanic euxinia — which may be widespread in the continental margins due to enhanced oxidative weathering in the terminal Ediacaran Period — may have locally prohibited the colonization of Ediacara-type organisms and resulted in low δ34Spyrite values in the lower Khatyspyt Formation. In the middle and upper Khatyspyt Formation, progressive secular transition from euxinic to non-euxinic and more habitable conditions may have allowed for the colonization of Ediacara-type and other macro-organisms.

AB - The Ediacaran Period witnessed the first appearance of macroscopic animal life in Earth's history. However, the biogeochemical context for the stratigraphic occurrence of early metazoans is largely uncertain, in part due to the dearth of integrated paleobiological and chemostratigraphic datasets. In this study, a comprehensive geochemical analysis was conducted on the fossiliferous Khatyspyt Formation in Arctic Siberia, in order to gain insights into the Ediacaran paleoenvironments. This study was designed to specifically address the relationship between paleoredox conditions and Ediacaran fossil occurrences in the Khatyspyt Formation. Our data reveal a dramatic shift in pyrite sulfur isotope compositions (δ34Spyrite) from ca. − 20‰ to ca. 55‰, and this shift is intriguingly associated with the first occurrence of Ediacara-type macrofossils at the studied section, suggesting a possible link between seawater redox conditions and distribution of early macroscopic organisms. Based on multiple lines of sedimentological and geochemical evidence, we propose that the development of oceanic euxinia — which may be widespread in the continental margins due to enhanced oxidative weathering in the terminal Ediacaran Period — may have locally prohibited the colonization of Ediacara-type organisms and resulted in low δ34Spyrite values in the lower Khatyspyt Formation. In the middle and upper Khatyspyt Formation, progressive secular transition from euxinic to non-euxinic and more habitable conditions may have allowed for the colonization of Ediacara-type and other macro-organisms.

KW - Carbon and sulfur cycles

KW - Chemostratigraphy

KW - Early macro-organism distribution

KW - Oceanic euxinia

KW - Redox condition

KW - Superheavy pyrite

UR - http://www.scopus.com/inward/record.url?scp=84989315070&partnerID=8YFLogxK

U2 - 10.1016/j.palaeo.2016.08.015

DO - 10.1016/j.palaeo.2016.08.015

M3 - Article

AN - SCOPUS:84989315070

VL - 461

SP - 122

EP - 139

JO - Palaeogeography, Palaeoclimatology, Palaeoecology

JF - Palaeogeography, Palaeoclimatology, Palaeoecology

SN - 0031-0182

ER -

ID: 25478994