Paleoclimate evolution of the Middle Triassic Guanling Formation from South China and its significance for the preservation of the Luoping biota

被引：1

作者：

Ding, Zhongzhao ^{[1
,2
]}

Ma, Zhixin ^{[3
,4
,5
]}

Hu, Shixue ^{[3
]}

Dai, Shuang ^{[1
,2
]}

Zhang, Qiyue ^{[3
]}

Min, Xiao ^{[3
]}

Huang, Jinyuan ^{[3
,6
]}

Wen, Wen ^{[3
]}

Zhou, Changyong ^{[3
]}

Fang, Xinnan ^{[1
,2
]}

Ji, Tianqi ^{[1
,2
]}

Qin, Lingfeng ^{[1
,2
]}

机构：

[1] Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Peoples R China

[2] Minist Nat Resources, Key Lab Strateg Mineral Resources Upper Yellow Riv, Lanzhou 730000, Peoples R China

[3] China Geol Survey, Chengdu Ctr, Geosci Innovat Ctr Southwest China, Chengdu 610218, Peoples R China

[4] Chengdu Univ Technol, Key Lab Deeptime Geog & Environm Reconstruct & App, Minist Nat Resources, Chengdu 610059, Peoples R China

[5] China Univ Geosci, Sch Ocean Sci, Beijing 100083, Peoples R China

[6] Chinese Acad Sci, CAS, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China

来源：

GLOBAL AND PLANETARY CHANGE | 2024年 / 242卷

关键词：

Middle Triassic; Microfacies analysis; Paleoclimate; Luoping biota; Marine anoxia; RARE-EARTH-ELEMENT; END-PERMIAN EXTINCTION; GUIZHOU PROVINCE; STABLE-ISOTOPE; CONODONT BIOSTRATIGRAPHY; EXCEPTIONAL PRESERVATION; GEOBIOLOGIC FEATURES; OCEAN ACIDIFICATION; ACCUMULATION RATES; YANGTZE PLATFORM;

D O I：

10.1016/j.gloplacha.2024.104588

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

The Middle Triassic is regarded as an important period of biotic recovery after the end-Permian mass extinction, of which the Middle Triassic Luoping biota represents a full recovery of marine ecosystem. However, the research on the relationship between biotic recovery and environmental evolution in the Middle Triassic remains poorly understood. To investigate this issue, microfacies analysis and multiple geochemical proxies (Al, Ti, Th, Sc, and & sum;REY) of an Anisian (Middle Triassic) succession (the Member II of the Guanling Formation, Leniduo section, South China) yielding the Luoping biota are carried out. Five sedimentary facies are identified through field investigation and microfacies analysis: open platform, restricted platform, tidal flat, shoal and intra-platform depression. According to the changes of multiple geochemical proxies, this section can be divided into five stages. A sudden facies transition from open platform to intra-platform depression, and high contents of Al, Ti, Sc, Th, and & sum;REY in stage IV indicate a rapid sea-level rise and detrital input increase, coinciding with the preservation of the Luoping biota. This evidence suggest that enhanced continental weathering caused by global warming, global sea level rise, and frequent regional volcanic activities promoted the death and preservation of the Luoping biota.

引用

页数：18

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