New geochemical identification fingerprints of volcanism during the Ordovician-Silurian transition and its implications for biological and environmental evolution
S Yang, W Hu, J Fan, Y Deng - Earth-Science Reviews, 2022 - Elsevier
Volcanism had been an important factor in several geological events, usually recorded by
volcanic ash layers (bentonites). However, most volcanic eruption materials were dispersed …
volcanic ash layers (bentonites). However, most volcanic eruption materials were dispersed …
Developments in analytical techniques for chemostratigraphy, chronostratigraphy, and geochemical fingerprinting studies: Current status and future trends
Chemostratigraphy utilizes the elemental, isotopic, and mineralogical compositions of
sediments and rocks to understand the conditions of deposition and diagenesis, variations …
sediments and rocks to understand the conditions of deposition and diagenesis, variations …
Late Paleozoic–early Mesozoic continental biostratigraphy—links to the standard global chronostratigraphic scale
JW Schneider, SG Lucas, F Scholze, S Voigt… - Palaeoworld, 2020 - Elsevier
Nonmarine biostratigraphic/biochronologic schemes have been created for all or parts of the
late Carboniferous–Middle Triassic using palynomorphs, megafossil plants, conchostracans …
late Carboniferous–Middle Triassic using palynomorphs, megafossil plants, conchostracans …
[HTML][HTML] Geological factors controlling variations in the mineralogical and elemental compositions of Late Permian coals from the Zhijin-Nayong Coalfield, western …
J Liu, S Dai, H Song, VP Nechaev, D French… - International Journal of …, 2021 - Elsevier
Determination of the geochemical and mineralogical characteristics of coal can provide
useful information on the geological setting and evolution of coal basins and assist in …
useful information on the geological setting and evolution of coal basins and assist in …
[HTML][HTML] Mineralogical and geochemical characteristics of altered volcanic ashes (tonsteins and K-bentonites) from the latest Permian coal-bearing strata of western …
Although the geochemical and mineralogical characteristics and provenance of Permian-
Triassic boundary (PTB) widespread volcanic ashes from southern China have been well …
Triassic boundary (PTB) widespread volcanic ashes from southern China have been well …
[HTML][HTML] Provenance changes for mineral matter in the latest Permian coals from western Guizhou, southwestern China, relative to tectonic and volcanic activity in the …
Recent studies have found that the provenance for water-transported sediments in some
coal seams in the Late Permian and Early Triassic sequences from SW China have changed …
coal seams in the Late Permian and Early Triassic sequences from SW China have changed …
[HTML][HTML] Evidence for multiple sources for inorganic components in the Tucheng coal deposit, western Guizhou, China and the lack of critical-elements
J Liu, VP Nechaev, S Dai, H Song, EV Nechaeva… - International Journal of …, 2020 - Elsevier
Terrigenous materials from sediment-source regions are important controls on the types and
concentrations of inorganic components in coal. The Kangdian Upland (dominated by the …
concentrations of inorganic components in coal. The Kangdian Upland (dominated by the …
Environmental perturbations during the latest Permian: Evidence from organic carbon and mercury isotopes of a coal-bearing section in Yunnan Province …
The end-Permian mass extinction (EPME) is sudden, but prior to which, the ecological
resilience has diminished. The Late Permian is an important geologic period for coal …
resilience has diminished. The Late Permian is an important geologic period for coal …
Facies dependence of the mineralogy and geochemistry of altered volcanic ash beds: an example from Permian-Triassic transition strata in southwestern China
Factors controlling variations in the clay mineralogy and geochemical composition of
volcanic ash beds deposited in different types of depositional environments remain …
volcanic ash beds deposited in different types of depositional environments remain …
Using volcaniclastic rocks to constrain sedimentation ages: To what extent are volcanism and sedimentation synchronous?
Volcaniclastic rocks are commonly used to date sedimentary series since absolute ages are
routinely obtained from several geochronological methods. In this work, we present five …
routinely obtained from several geochronological methods. In this work, we present five …