Results 131 to 140 of about 84,524 (285)

Ngarrawa (mound spring) sediments as archives of Holocene environmental change in arid central Australia: Insights from Itrax XRF scanning

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Central Australia's ngarrawa, or ‘mound springs’, are unique hydrological systems that serve as some of the only near‐permanent sources of water and continuous sediment deposition in Australia's arid interior. As such, they hold significant potential as palaeo‐climate and ‐environmental archives in a region where many aspects of past climate ...
Fletcher C. Nixon   +3 more
wiley   +1 more source

Electron probe microanalysis of extremely fine‐grained tephras: new protocols and insights for analyses at the 1 μ ${\rm{\mu }}$m scale

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Volcanic ash (tephra) provides an important chronostratigraphic framework for correlating Quaternary records. In ultra‐distal ( > $\gt $1500 km) settings such as ice cores and marine sediments, deposits are typically preserved as cryptotephra composed of glass shards ≤ 20 μ $\le 20\,\mu
Celeste Smith   +6 more
wiley   +1 more source

A new fossil species of the extant genus Vicelva from mid‐Cretaceous Kachin amber (Coleoptera: Staphylinidae)

open access: yesEcology and Evolution
A new species of the extant staphylinid genus Vicelva Moore & Legner, V. rasilis sp. nov., is reported from mid‐Cretaceous Kachin amber of northern Myanmar.
Yan‐Da Li   +3 more
doaj   +1 more source

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio   +4 more
wiley   +1 more source

New 3D Velocity Model (mTAB3D) for Absolute Hypocenter Location in Southern Iberia and the Westernmost Mediterranean

open access: yesEarth and Space Science
The Trans‐Alboran Shear Zone is one of the most seismically active areas in the westernmost Mediterranean, where a wide variety of tectonic domains have developed within the context of oblique convergence between Eurasia and Africa plates. In this region,
José Luis Sánchez‐Roldán   +6 more
doaj   +1 more source

First finding of Icelandic tephra in Czechia: Vedde Ash identified in palaeolake sediments of Stará Jímka

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT In this study, we report the first documented occurrence of the Icelandic Vedde Ash (VA) in the Bohemian Forest, identified within palaeolake sediments from Stará Jímka, Czechia, representing the first Icelandic tephra layer identified in Czechia.
Verena Meier   +3 more
wiley   +1 more source

Advances in Application of Sequence Stratigraphy in Italy

open access: yes, 2008
The volumes depicts the state-of-the-art of sequence stratigraphy in Italy and includes 14 papers. These are grouped into three separate sections: Section I: Sequence Stratigraphy of Quaternary Deposits, Section II: Sequence Stratigraphy of Siliciclastic,
L. Sabato, A. Amorosi, B.U. Haq
core   +1 more source

New constraints on the postglacial evolution of Lago Maggiore, Northern Italy

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Lago Maggiore is situated in an overdeepened valley reach at the southern margin of the European Alps, and its thick sediment infill allows the reconstruction of the postglacial valley and lake evolution. We study here the sedimentary succession in the lower Ossola Valley, which is infilled by ~500 m of deposits. In a marginal position, a core
Lukas Gegg   +9 more
wiley   +1 more source

Review of the Salpausselkä ice‐marginal formations in Finland

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Extensive Salpausselkä ice‐marginal formations were deposited in southern and eastern Finland during the Weichselian deglaciation. These comprise three major ridges (I, II, and III Salpausselkäs) and their eastern counterparts (Tuupovaara, Koitere, and Pielisjärvi), together forming laterally continuous ice‐marginal formations extending ...
Jukka‐Pekka Palmu   +3 more
wiley   +1 more source

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