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作者:Guocheng Dong , Weijian Zhou , Yunchong Fu ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.56
摘要:Abstract(#br)The timing and extent of the last glaciation in the Altai Mountains are key to understanding climate change in this critical region. However, robust glacial chronologies are sparse across the Altai Mountains, especially in the Chinese Altai, impeding the correla...
作者:David W. Marchetti , Allen L. Stork , D. Kip Solomon ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.55
摘要:Abstract(#br)Determining the ages of young volcanic rocks is important for understanding the tectono-magmatic development of geologic terranes. Usually, if rocks are old enough the 40 Ar/ 39 Ar or K–Ar techniques can provide reliable ages. However, when rocks are younger, th...
作者:Nayeli Pérez-Rodríguez , Juan Morales , Marie-Noëlle Guilbaud ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.55
摘要:Abstract(#br)We study seven out of the thirteen lava flows associated to El Metate shield volcano using paleomagnetic, absolute intensity and rock-magnetic experiments. Characteristic paleomagnetic directions were successfully determined from most of the flows. A combined me...
作者:Franziska A. Lechleitner , Andrew J. Mason , Sebastian F.M. Breitenbach ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.56
摘要:Abstract(#br)Permafrost is widely present throughout the Northern Hemisphere high latitudes, and stores large amounts of carbon in the form of frozen soil organic matter. The response of permafrost regions to anthropogenic climate change remains uncertain, in part because of...
作者:Yujie Guo , Bo Li , Hailong Zhao
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.56
摘要:Abstract(#br)In this study we compared D e results obtained from single-aliquot (SA) and single-grain (SG) measurements on potassium rich feldspars (K-feldspars) from the Nihewan Basin, north China, based on the multiple-elevated-temperature post-infrared infrared (MET-pIRIR) sti...
作者:Bergrún Arna Óladóttir , Thor Thordarson , Áslaug Geirsdóttir ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.56
摘要:Abstract(#br)The Saksunarvatn Ash, first found in the Faroe Islands, is a tephra produced by the Grímsvötn volcanic system in Iceland. Since its discovery in the Faroe Islands, dark tephra with a similar stratigraphic position has been described at numerous locations around ...
作者:Mathilde Bablon , Xavier Quidelleur , Giuseppe Siani ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.57
摘要:Abstract(#br)New K-Ar ages obtained on juvenile pumice glass shards indicate that the Chalupas ignimbrite, one of the main Pleistocene tephra markers of the Ecuadorian arc, was emplaced at 216 ± 5 ka. Morphology and major and trace element contents of the glass shards are si...
作者:Gonca Gençalioğlu-Kuşcu , Göksu Uslular , Martin Danišík ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.55
摘要:Abstract(#br)Kyra is an important tephra unit for Nisyros pre-caldera stage due to a number of subunits with various compositions (basaltic andesite to dacite) and distal dispersion on surrounding Greek islands (Tilos and Chalki) and Datça peninsula (Turkey). As for the most...
作者:Kwangkyu Park , Jung-Hyun Kim , Hirofumi Asahi ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.55
摘要:Abstract(#br)The Quaternary paleoenvironmental history of the Arctic Ocean remains uncertain, mainly due to the limited chronological constraints, especially beyond the 14 C dating limits of accelerator mass spectrometry (AMS). The difficulty in establishing reliable chronos...
作者:Djamel Taieb Errahmani , Abdelkader Noureddine , José María Abril-Hernández ...
来源:[J].Quaternary Geochronology(IF 4.015), 2020, Vol.56
摘要:Abstract(#br)The sedimentary system of the Algiers Bay has been impacted in the last decades by the exponential increases in population, urbanism and industrial activities of the city of Algiers, and by episodic floods, mudflows, earthquakes and tsunamis. Activity concentrat...

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