Deep-time mass extinction helps understand the current biotic crisis DOI Creative Commons

Shucheng Xie

National Science Review, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 20, 2023

Language: Английский

Features and dolomitizing mechanisms in inner platform facies across the Permian–Triassic boundary (External Dinarides, Croatia) DOI Open Access
Dunja Aljinović, Sylvain Richoz, Duje Smirčić

et al.

Sedimentology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

ABSTRACT The strata encompassing the Permian–Triassic boundary interval capture a pivotal period in Earth's history, with significant changes Phanerozoic Earth system dynamics, culminating severe mass extinction. In carbonate platforms, this is marked by shift from skeletal to microbial production. Whereas extensive research has focused on End‐Permian Mass Extinction open‐marine shelf environments, transition within inner platform facies remains underexplored due limited dating options and pervasive dolomitization. This study examines at continuous dolostone, Brušane‐Sy section, External Dinarides (Croatia), that retains much of its original fabric. High‐resolution petrography, biostratigraphy chemostratigraphy (δ 13 C carb δ org ) were utilized detail sedimentary responses across boundary. Upper Permian fine‐crystalline dolostone features well‐preserved cryptomicrobial/bioclastic, peritidal microfacies calcareous algae foraminifera. contrast, Lower Triassic shows medium‐crystalline, fabric‐destructive texture. fabric‐retentive attributed two dolomitization processes: (i) Late transgression facilitating aragonite/high Mg‐calcite deposition, later transforming neomorphically into texture abundant precursor dolomite nuclei; (ii) dispersed Early primary precipitation stabilized during shallow burial decaying mats serving as loci for crystal growth but decreased nucleation. recorded minimal negative excursion (≤0.7‰) more pronounced Δ – ; ca 4.6‰). Contrasting typical excursions, such isotopic reflect localized production photoautotrophy (algae cyanobacteria) early presence seawater‐derived dissolved inorganic carbon. Understanding these diagenetic dynamics provides crucial insights environmental biogeochemical cycles affecting dolomitization, offering comprehensive view wider range marine dominated depositional environments.

Language: Английский

Citations

0
The Sakhray Canyon geosite as a key locality of late Paleozoic–middle Mesozoic carbonate and other rocks of the Western Caucasus DOI
Dmitry A. Ruban, Svetlana О. Zorina, L. A. Glinskikh

et al.

Carbonates and Evaporites, Journal Year: 2025, Volume and Issue: 40(2)

Published: March 8, 2025

Language: Английский

Citations

0
Volcanogenic mercury and plant mutagenesis during the end-Permian mass extinction: Palaeoecological perturbation in northern Pangaea DOI
Niall W. Paterson, Valentina Marzia Rossi, Elke Schneebeli‐Hermann

et al.

Gondwana Research, Journal Year: 2024, Volume and Issue: 134, P. 123 - 143

Published: July 9, 2024

Language: Английский

Citations

2
An end-Permian two-stage extinction pattern in the deep-water Dongpan Section, and its relationship to the migration and vertical expansion of the oxygen minimum zone in the South China Basin DOI
Weihong He, Elizabeth A. Weldon, Tinglu Yang

et al.

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2024, Volume and Issue: 649, P. 112307 - 112307

Published: June 1, 2024

Language: Английский

Citations

1
Pelsonian negative carbon isotope excursion (PENCIE): A Tethys-wide abnormal carbon cycle event in the Middle Triassic DOI
Yiran Cao, Daoliang Chu, Jacopo Dal Corso

et al.

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2024, Volume and Issue: 654, P. 112473 - 112473

Published: Aug. 24, 2024

Language: Английский

Citations

1
Organic matter enrichment model of Permian Capitanian-Changhsingian black shale in the intra-platform basin of Nanpanjiang basin DOI Creative Commons
Haiquan Zhang,

Junfeng Cao,

Baofeng Lan

et al.

Frontiers in Earth Science, Journal Year: 2024, Volume and Issue: 12

Published: July 25, 2024

The Permian Capitanian-Changhsingian black shale formed in intra-platform basins are the major source rocks Southwest China. However, depositional conditions and organic matter accumulation of these shales not well understood. In this study, geochemical characteristics comprise TOC, major, trace REEs from sixty-two samples studied outcrop Northern Nanpanjiang Basin, China systematically investigated to determine silicon source, paleo-ocean productivity, paleo-redox reveal their influence on enrichment under 3rd-order sequence. study area is result combined effects active extensional activity, high paleo-productivity maintained by volcanic dysoxic anoxic represented biological extinction events. There differences factors controlling at different stages. for during Capitanian (SQ2) rapidly deepening water mass rifts productivity induced ash igneous provinces, as global event “negative carbon isotope shift.” Changhsingian reactivation rifts, resulting a environment, activity South Wuchiapingian was stagnation intermittent level stage.

Language: Английский

Citations

0
The deterioration and collapse of late Permian marine ecosystems and the end-Permian mass extinction: A global view DOI
Weihong He, G.R. Shi, Kexin Zhang

et al.

Earth-Science Reviews, Journal Year: 2024, Volume and Issue: unknown, P. 104971 - 104971

Published: Nov. 1, 2024

Language: Английский

Citations

0
Deep-time mass extinction helps understand the current biotic crisis DOI Creative Commons

Shucheng Xie

National Science Review, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 20, 2023

Language: Английский

Citations

0