04-25

2022

EPSL|Late Permian–Middle Triassic magnetostratigraphy in North China and its implications for terrestrial-marine correlations

AbstractA detailed magnetostratigraphic study, linked to a new latest Permian U–Pb ID-TIMS age, was undertaken on the continental Shichuanhe section (SCH) in North China in order to provide a magnetic polarity scale for the Late Permian–early Middle Triassic interval. Tilt-corrected mean directions of the characteristic remanent magnetization pass the reversal test and correspond to a site pa...

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04-12

2021

Geology|Metal-induced stress in survivor plants following the end-Permian collapse of land ecosystems

AbstractTeratological spores and pollen are widespread in sediments that record the Permian-Triassic mass extinction. The malformations are thought to be the result of extreme environmental conditions at that time, but the mutagenic agents and the precise timing of the events remain unclear. We examined the abundance of teratological sporomorphs and metal concentrations in a Permian-Triassic tr...

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03-22

2021

Geochimica et Cosmochimica Acta|Development of carbonate-associated phosphate (CAP) as a proxy for reconstructing ancient ocean phosphate levels

AbstractPhosphorus is considered the ultimate limiting nutrient in the oceans over geological timescales. Phosphate (PO43-) availability consequently exerts control on the global carbon cycle and atmospheric/oceanicredox conditions over million-year timescales. Despite its importance, there are no established tools that can directly and continuously reconstruct oceanic phosphate concentrations ...

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02-26

2021

Geology|Phanerozoic variation in dolomite abundance linked to oceanic anoxia

AbstractThe abundance of dolomitic strata in the geological record contrasts with the general rarity of locations where dolomite forms today, a discrepancy that has long posed a problem for their interpretation. Recent culture experiments show that dolomite can precipitate at room temperature, raising the possibility that many ancient dolomites may be of syngenetic origin. We compiled a large g...

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01-12

2021

GSA Bulletin|Changes in productivity associated with algal-microbial shifts during the Early Triassic recovery of marine ecosystems

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09-23

2020

Paleobiology|Toward an understanding of cosmopolitanism in deep time: a case study of ammonoids from the middle Permian to the Middle Triassic

生物全球化现象（Biotic Cosmopolitanism），即不同的地方物种组成变得非常相似，在地质历史时期多次出现。揭示地质历史时期的生物全球化现象有助于我们深入理解当前生态系统正在发生的生物均质化现象。最近，中国地质大学（武汉）宋海军课题组选择古、中生代常见的一类化石——菊石（图1）作为研究对象，研究了二叠纪-三叠纪831个属的古地理分布，发现在中生代初的两次灭绝事件后菊石都出现了全球化现象。图 1. 早三叠世常见的...

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09-17

2020

Science Advances|Extinction and dawn of the modern world in the Carnian (Late Triassic)

AbstractThe Carnian Pluvial Episode (Late Triassic) was a time of global environmental changes and possibly substantial coeval volcanism. The extent of the biological turnover in marine and terrestrial ecosystems is not well understood. Here, we present a meta-analysis of fossil data that suggests a substantial reduction in generic and species richness and the disappearance of 33% of marine gen...

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07-09

2020

Journal of Hydrology|Holocence peatland water regulation response to ∼1000-year solar cycle indicated by phytoliths in central China

AbstractPeatland ecosystem processes are strongly influenced by hydrology linked to climate change. However, how transpiration, as major water loss pathway in closed peatland, responds to climate change and then regulates ecosystem water balance that remains poorly understood. Here, we reported an 18,000-year fossil phytolith record from an herbaceous community-dominated mountain peatland in ce...

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07-08

2020

PNAS|Flat latitudinal diversity gradient caused by the Permian–Triassic mass extinction

AbstractThe latitudinal diversity gradient (LDG) is recognized as one of the most pervasive, global patterns of present-day biodiversity. However, the controlling mechanisms have proved difficult to identify because many potential drivers covary in space. The geological record presents a unique opportunity for understanding the mechanisms which drive the LDG by providing a direct window to deep...

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07-07

2020

Current Biology|Predicting biotic responses to future climate warming based on classic ecogeographic rules

​2020年7月6日，Cell出版集团下属期刊《Current Biology》在线刊登了中国地质大学（武汉）生物地质与环境地质国家重点实验室田力博士，与英国布里斯托大学Michael Benton教授合著的，题为《Predicting biotic responses to future climate warming based on classic ecogeographic rules》（利用经典生态地理法则预测未来气候变暖下的生物响应）的论文。该文中，系统介绍和总结了从达尔文时代到上世纪晚期7个以发现者命名的生...

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06-09

2020

PNAS|Massive formation of early diagenetic dolomite in the Ediacaran ocean: Constraints on the “dolomite problem”

AbstractPaleozoic and Precambrian sedimentary successions frequently contain massive dolomicrite [CaMg(CO3)2] units despite kinetic inhibitions to nucleation and precipitation of dolomite at Earth surface temperatures (<60 °C). This paradoxical observation is known as the “dolomite problem.” Accordingly, the genesis of these dolostones is usually attributed to burial–hydrothermal dolomitizat...

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10-25

2018

Geology|A dolomitization event at the oceanic chemocline during the Permian-Triassic transition

AbstractThe Permian-Triassic boundary (PTB) crisis caused major short-term perturbations in ocean chemistry, as recorded by the precipitation of anachronistic carbonates. Here, we document for the first time a global dolomitization event during the Permian-Triassic transition based on Mg/(Mg + Ca) data from 22 sections with a global distribution representing shallow- to deep-marine environments...

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