Characterizing coal gas reservoirs: A multiparametric evaluation based on geological and geophysical methods

Gondwana Research, Journal Year: 2024, Volume and Issue: 133, P. 91 - 107

Published: June 10, 2024

Language: Английский

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Astronomically paced climate and carbon cycle feedbacks in the lead-up to the Late Devonian Kellwasser Crisis

Climate of the past, Journal Year: 2024, Volume and Issue: 20(2), P. 415 - 448

Published: Feb. 28, 2024

Abstract. Repeated carbon isotope excursions and widespread organic-rich shale deposition mark the Middle Upper Devonian series. Various explanations such as extensive volcanism land plant evolution have been given for these perturbations general sensitivity of oceans to development anoxia, but their repeated nature suggests that astronomical forcing may controlled timing. Here, a cyclostratigraphic study Kellwasser Crisis at Frasnian–Famennian stage boundary (ca. 372 Ma) is carried out. The was one most ecologically impactful ranked among “Big Five” Phanerozoic mass extinctions. studied site Winsenberg roadcut section in Rhenish Massif, Germany, which represents quiet tropical shelf basin setting. Centimetre-scale elemental records, generated by portable X-ray scanning, allow testing hypothesis 2.4 Myr eccentricity node preceded event. study's results are supportive this hypothesis. We find enhanced chemical weathering (K2O / Al2O3) during period leading up peak distal detrital input (SiO2 CaO) riverine runoff (TiO2 just prior start interpret pattern long-term minimum facilitating excessive regolith build-up absence strong seasonal contrasts. Earth's system coming out would rapidly intensified hydrological cycle, causing nutrient-rich regoliths be eroded washed away oceans, where they resulted eutrophication anoxia. An control on regional climate observed beyond single crisis. Wet–dry cycles were paced 405 kyr eccentricity, with both Lower events taking place comparatively drier times. A precession-sensitive monsoonal prevailed shorter timescales. Intensification following caused erosion. estimate total duration ca. 900 kyr, individual lasting 250 100 respectively. If indeed operated via climates, then plants played an important role. This not through evolutionary steps directly triggering gradually strengthening climatic response orbital soil – creating soils thick enough meaningfully respond intensifying cycle.

Language: Английский

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Resolving mercury cycling and the role of volcanism during the Toarcian Oceanic Anoxic Event

Earth and Planetary Science Letters, Journal Year: 2025, Volume and Issue: 658, P. 119323 - 119323

Published: March 15, 2025

Language: Английский

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Volcanism and basalt weathering drove Ordovician climatic cooling

Published: May 12, 2025

Causal relationships among the major environmental and biological developments of Ordovician Period (i.e., long-term climatic cooling, Hirnantian Glaciation, Great Biodiversification Event, spread bryophyte-grade land plants, Late Mass Extinction) remain in debate. Here, we present new data for volcanic activity, sea-surface temperatures, chemical weathering intensity, based respectively on Hg geochemistry, conodont oxygen strontium isotopes. This dataset documents a ~25-Myr-long interval cooling (ca. 470-445 Ma), which commenced around Lower/Middle boundary intensified near Middle/Upper transition, ultimately culminating Glaciation. Cooling was associated with rocks (basalt) drawdown atmospheric pCO₂, as well periodic plant expansion photic-zone euxinia, during intervals their subsequent phases. These implicate activity primary driver contemporaneous changes, early plants potential secondary influence, thus revealing complex modulation life-environment coevolution Period.

Language: Английский

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Geochemical analysis of mass mortality events in the Cretaceous (Aptian) Konservatt-Lagerstätte of Crato paleolake, Brazil

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2024, Volume and Issue: 655, P. 112558 - 112558

Published: Oct. 18, 2024

Language: Английский

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显生宙以来汞浓度异常评估及碳汞耦合关系的初步研究

Deleted Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 26, 2024

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Lithium isotope and mercury evidence for enhanced continental weathering and intense volcanism during the Ordovician-Silurian transition

Geochimica et Cosmochimica Acta, Journal Year: 2024, Volume and Issue: 391, P. 49 - 68

Published: Dec. 13, 2024

Language: Английский

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