Ecological evolution across the Permian-Triassic boundary at Panjiazhuang section in Changxing County,Zhejiang Province

doi:10.7605/gdlxb.2026.026

Journal of Palaeogeography（Chinese Edition） ›› 2026, Vol. 28 ›› Issue (4): 1337-1349. doi: 10.7605/gdlxb.2026.026

• PALAEOGEOGRAPHY • Previous Articles Next Articles

Ecological evolution across the Permian-Triassic boundary at Panjiazhuang section in Changxing County,Zhejiang Province

HUANG Yafei¹^,²^,³^,⁴(), CHEN Can⁵, YI Zhixing⁶, HE Weihong⁷()

¹ Wuhan Center, China Geological Survey(Geosciences Innovation Center of Central South China), Wuhan 430205, China
² Technology Innovation Center for Shale Oil and Gas Accumulation Theory and Engineering in Southern Complex Structural Area, China Geological Survey, Wuhan 430205, China
³ Shale Gas Research Center for Southern Complex Structural Area, China Geological Survey, Wuhan 430205, China
⁴ Hubei Key Laboratory of Paleontology and Geological Environment Evolution, Wuhan 430205, China
⁵ Second Geological Brigade of Hubei Geological Bureau, Hubei Enshi 445000, China
⁶ Institute of Culture Heritage, Shandong University, Shandong Qingdao 266237, China
⁷ State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China

Received:2025-03-31 Revised:2025-08-01 Online:2026-08-01 Published:2026-08-14
Contact: HE Weihong,born in 1971,Ph.D.,a professor,is engaged in researches on paleontology,stratigraphy,and biological mass extinction during the Permian-Triassic transition. E-mail: whzhang@cug.edu.cn.
About author:
HUANG Yafei, born in 1994, Ph.D., an engineer, is engaged in researches on sedimentology and stratigraphy, ancient marine environment, and shale gas basic geology. E-mail: hyafei@mail.cgs.cn.
Supported by:
Open Fund of Technology Innovation Center for Shale Oil and Gas Accumulation Theory and Engineering in Southern Complex Structural Area, China Geological Survey(SOG-202411); Strategic Mineral Resources Survey and Evaluation Project(2024ZRYJDC017); National Natural Science Foundation of China(42230205); Foundation of the Geological Survey of China(DD20240047)

浙江长兴潘家庄剖面二叠纪与三叠纪之交的生态系演变^*

黄亚飞¹^,²^,³^,⁴(), 陈灿⁵, 易智星⁶, 何卫红⁷()

¹ 中国地质调查局武汉地质调查中心(中南地质科技创新中心), 湖北武汉 430205
² 中国地质调查局南方复杂构造区页岩油气成藏理论与工程技术创新中心, 湖北武汉 430205
³ 中国地质调查局南方复杂构造区页岩气研究中心, 湖北武汉 430205
⁴ 古生物与地质环境演化湖北省重点实验室, 湖北武汉 430205
⁵ 湖北省地质局第二地质大队, 湖北恩施 445000
⁶ 山东大学文化遗产研究院, 山东青岛 266237
⁷ 中国地质大学(武汉)地球科学学院, 生物地质与环境地质国家重点实验室, 湖北武汉 430074

通讯作者: 何卫红,女,1971年生,博士,教授,主要从事二叠纪与三叠纪之交古生物、地层与生物大灭绝研究。E-mail: whzhang@cug.edu.cn。
作者简介:
黄亚飞,男,1994年生,博士,工程师,主要从事沉积学与地层学、古海洋环境及页岩气基础地质研究。E-mail: hyafei@mail.cgs.cn。
基金资助:
*中国地质调查局南方复杂构造区页岩油气成藏理论与工程技术创新中心开放基金(SOG-202411); 战略性矿产资源调查评价项目(2024ZRYJDC017); 国家自然科学基金项目(42230205); 中国地质调查局地质调查项目(DD20240047)

Abstract

Abstract:

Ecological evolution varied significantly across different water depth during the Permian-Triassic mass extinction. Shallow-water carbonate platform environments,characterized by low ambient water depth,hosted the majority of benthic organisms and consequently exhibited heightened sensitivity to environmental changes. As such,they provide critical insights into marine ecosystem evolution under disaster scenarios. Although middle to deep-water settings have been extensively studied,research on shallow-marine environments remains limited. This paper focuses on the newly identified Panjiazhuang section,a shallow-water carbonate platform succession in the Changxing area of Zhejiang Province,and integrates sedimentological,paleontological,and isotopic geochemical analyses to reconstruct ecosystem evolution across the Permian-Triassic transition. In the Panjiazhuang section,a major extinction event is recorded at the top of the bioclastic limestone within the upper Permian Changxing Formation. This interval coincides with a distinct shift in microfacies—from foraminifera-and algae-rich bioclastic limestone to microbialite—indicating a rapid proliferation of cyanobacteria following the collapse of metazoan communities. Additionally,the inorganic carbon isotope exhibited a notable negative excursion during this time. The findings indicate that the ecosystem transition from bioclastic limestone to microbialite facies at the Paleozoic-Mesozoic boundary in the Panjiazhuang section represents a single-episode extinction process during the Permian-Triassic mass extinction event.

Key words: mass extinction, shallow water, microbialites, ecological evolution, Permian, Triassic, Zhejiang Province

摘要：

在二叠纪与三叠纪之交的生物大灭绝事件中,不同水深环境中的生态系演变过程亦存在差异。浅水碳酸盐台地环境水体深度小,聚集了绝大部分的底栖生物,对于环境的变化更为敏感,是了解灾难环境下海洋生态系演化的重要窗口。文中以下扬子浙江长兴地区新发现的潘家庄剖面浅水碳酸盐台地相为研究对象,综合开展沉积学、古生物学与同位素地球化学研究,探讨二叠纪与三叠纪之交浅水环境生态系的演变。结果显示,潘家庄剖面上二叠统长兴组生物碎屑灰岩的顶部发生大规模生物灭绝,伴随着沉积微相从富含有孔虫、藻类的生物碎屑灰岩到凝块石微生物岩的转变,反映出在后生生物大规模灭绝后蓝细菌呈爆发式增长; 同时,无机碳同位素发生了1次显著的负偏。依据上述结果认为,浙江长兴潘家庄剖面二叠纪与三叠纪之交由生物碎屑灰岩相突变为微生物岩相的生态系演变,可能代表了二叠纪末生物大灭绝事件中的单幕式生物灭绝过程。

关键词: 生物大灭绝, 浅水相, 微生物岩, 生态系演变, 二叠纪, 三叠纪, 浙江

CLC Number:

P534

HUANG Yafei, CHEN Can, YI Zhixing, HE Weihong. Ecological evolution across the Permian-Triassic boundary at Panjiazhuang section in Changxing County,Zhejiang Province[J]. Journal of Palaeogeography（Chinese Edition）, 2026, 28(4): 1337-1349.

黄亚飞, 陈灿, 易智星, 何卫红. 浙江长兴潘家庄剖面二叠纪与三叠纪之交的生态系演变^*[J]. 古地理学报, 2026, 28(4): 1337-1349.

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URL: http://www.gdlxb.cn/EN/10.7605/gdlxb.2026.026

http://www.gdlxb.cn/EN/Y2026/V28/I4/1337

Figures/Tables 7

Fig.1 Palaeogeographic map of the Lower Yangtze region during the Permian-Triassic transition, location of Panjiazhuang section and field outcrops

Fig.2 Conodont plates of Panjiazhuang section in Changxing County,Zhejiang Province

Fig.3 Carbon isotope comparison of the Permian-Triassic transition at Panjiazhuang and Meishan sections in Changxing County,Zhejiang Province

Fig.4 Fossil distribution during the Permian-Triassic transition at Panjiazhuang section in Changxing County,Zhejiang Province

Fig.5 Sedimentary microfacies of bioclastic limestone of the Lower Permian Changxing Formation at Panjiazhuang section in Changxing County,Zhejiang Province

Fig.6 Polished and thin section photomicrographs showing thrombolite of the Lower Triassic Yinkeng Formation at Panjiazhuang section in Changxing County, Zhejiang Province

Fig.7 Sedimentary microfacies of shell-bearing micritic limestone and oncoidal limestone of the Lower Triassic Yinkeng Formation at Panjiazhuang section in Changxing County,Zhejiang Province

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