Výsledky vyhledávání - "Sediment geochemistry"

Akademický článek

Climate-induced shift of deep-sea benthic foraminifera at the onset of the mid-Brunhes dissolution interval in the northeast tropical Indian Ocean

Autor: Hiroyuki Takata, Minoru Ikehara, Koji Seto, Hirofumi Asahi, Hyoun Soo Lim, Sangmin Hyun, Boo-Keun Khim

Publikováno v: Progress in Earth and Planetary Science, Vol 11, Iss 1, Pp 1-18 (2024)

Abstract The mid-Brunhes dissolution interval (MBDI; Marine Isotope Stage (MIS) 13 to 7; ~ 533–191 ka) is characterized by various paleoclimatic/paleoceanographic events in the world. We investigated fossil deep-sea benthic foraminifera and sedimen

Externí odkaz: https://doaj.org/article/702ed4ae63ef4acc8c0999e47cba7862

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Akademický článek

Geochemical Split Among the Suspended and Mud Sediments in the Nethravati River: Insights to Compositional Similarity of Peninsular Gneiss and the Deccan Basalt Derived Sediments, and Its Implications on Tracing the Provenance in the Indian Ocean

Autor: G. P. Gurumurthy

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 25, Iss 7, Pp n/a-n/a (2024)

Abstract Major, trace, and rare earth element (REE) geochemistry of sediments from a tropical mountain river is investigated to understand the behavior of chemical elements during weathering and transportation in a Peninsular Gneissic terrain. The re

Externí odkaz: https://doaj.org/article/48129031ab3b417f829347adbe4077e6

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Akademický článek

Contrasting sedimentary and long-lasting geochemical imprints of seismic shaking in a small, groundwater-fed lake basin (Klopeiner See, Eastern European Alps)

Autor: Christoph Daxer, Katleen Wils, Arne Ramisch, Michael Strasser, Jasper Moernaut

Publikováno v: Sedimentologika, Vol 2, Iss 1 (2024)

In slowly deforming tectonic settings (e.g., European Alps), large earthquakes occur too infrequently to be adequately represented in instrumental and historical records. This leads to uncertainties and inaccuracies of seismic hazard estimations. To

Externí odkaz: https://doaj.org/article/bcf2105441e04a7eba6bbabdb1b20986

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Akademický článek

Geochemistry of siltstones in the North Qilian Zhongbao–Mayinggou formations (Late Ordovician–Early Silurian): implications for paleoclimate, paleoweathering, and tectonic setting

Autor: Yu Xia, Qian Hou, Chuanlong Mou

Publikováno v: Frontiers in Earth Science, Vol 12 (2024)

The Late Ordovician–Early Silurian period witnessed the Phanerozoic mass extinction, glacial events, and volcanic events. Paleoweathering indexes chemical index of alteration (CIA), chemical index of weathering (CIW), and plagioclase index of alter

Externí odkaz: https://doaj.org/article/463ad8f8e42640ae99ba4948b2f00ff8

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Akademický článek

Spatio-temporal variations of methane fluxes in sediments of a deep stratified temperate lake

Autor: Manchun Kang, Liu Liu, Hans-Peter Grossart

Publikováno v: iScience, Vol 27, Iss 4, Pp 109520- (2024)

Summary: Spatio-temporal variability of sediment-mediated methane (CH4) production in freshwater lakes causes large uncertainties in predicting global lake CH4 emissions under different climate change and eutrophication scenarios. We conducted extens

Externí odkaz: https://doaj.org/article/9fcde7e121374f9681ed45eb7e607b65

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Akademický článek

Geology, fluid inclusion characteristics and mineral resource estimation of the Güzelyayla porphyry Cu-Mo mineralization (NE Türkiye)

Autor: Mustafa Özkan, Deniz Göç, Ömer Akgül, Celaleddin Bayraktar, Fatih Sezen, Rıfat Cihan Sevim, Semi Hamzaçebi, Mustafa Tokoğlu, Rasim Taylan Kara, Cüneyt Şen, Mustafa Kemal Revan

Publikováno v: Bulletin of the Mineral Research and Exploration, Vol 169, Iss 169, Pp 63-85 (2022)

Magmatic processes that emerged with the evolution of the Neotethys ocean and associated lithospheric plates caused the formation of significant mineralization in the Tethys belt. The Eastern Pontides, which are located in the northeast of Türkiye a

Externí odkaz: https://doaj.org/article/9f444395a56e4505a8ee14b459e2c3d3

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Akademický článek

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