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Testing optically stimulated luminescence dating on sand-sized quartz of deltaic deposits from the Sperchios delta plain, central Greece 被引量:2
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作者 Evangelos Tsakalos Elias Dimitriou +3 位作者 Maria Kazantzaki Christos Anagnostou John Christodoulakis Eleni Filippaki 《Journal of Palaeogeography》 SCIE CSCD 2018年第2期130-145,共16页
This study reports on the first investigation into the potential of luminescence dating to establish a chronological framework for the depositional sequences of the Sperchios delta plain, central Greece. A series of t... This study reports on the first investigation into the potential of luminescence dating to establish a chronological framework for the depositional sequences of the Sperchios delta plain, central Greece. A series of three borehole cores(20 m deep) and two shallow cores(4 m deep), from across the delta plain, were extracted, and samples were collected for luminescence dating. The luminescence ages of sand-sized quartz grains were obtained from small aliquots of quartz, using the Single-Aliquot Regenerative-dose(SAR) protocol.The equivalent dose determination included a series of tests and the selection of the Minimum Age Model(MAM) as the most appropriate statistical model. This made it possible to confirm the applicability of quartz Optically Stimulated Luminescence(OSL) dating to establish absolute chronology for deltaic sediments from the Sperchios delta plain.Testing age results of the five cores showed that the deltaic sediments were deposited during the Holocene.A relatively rapid deposition is implied for the top14 m possibly as a result of the deceleration in the rate of the sea-level rise and the transition to terrestrial conditions, while on the deeper parts, the reduced sedimentation rate may indicate a lagoonal or coastal environment. 展开更多
关键词 Luminescence dating HOLOCENE Sedimentation rates Deltaic deposits Sperchios delta plain Central Greece
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Quaternary Neotectonic Configuration of the Southwestern Peloponnese, Greece, Based on Luminescence Ages of Marine Terraces 被引量:1
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作者 Constantin Athanassas Ioannis Fountoulis 《Journal of Earth Science》 SCIE CAS CSCD 2013年第3期410-427,共18页
This project studies marine terraces in western Messenia, southwestern Peloponnese, Greece, to propose a model of neotectonic configuration and paleogeographic evolution of western Messenia during the Quaternary. GIS ... This project studies marine terraces in western Messenia, southwestern Peloponnese, Greece, to propose a model of neotectonic configuration and paleogeographic evolution of western Messenia during the Quaternary. GIS analysis of topographic data and geological mapping revealed flanks of raised terraces created on Quaternary marine deposits. Luminescence ages of sediments from the three westernmost marine terraces tend to be consistent OIS-5, OIS-7 and OIS-9, respectively, thus agreeing with the three latest warm stages of the Pleistocene. Moreover, the type and the extent of deformation of the dated marine terraces allowed us to reflect on the neotectonic configuration of western Messenia as well as to conclude that progressive differential uplift over the last 300 ka has induced a dome-like structure to the upper crust of western Messenia. 展开更多
关键词 QUATERNARY Southwest Greece NEOTECTONICS sea-level change marine terrace lumines- cence dating tectonic uplift.
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Line scanning analysis of the component of Ru Porcelain by micro energy disperse X-ray fluorescence probe
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作者 P.L.Leung 毛振伟 +6 位作者 Mike Li 朱剑 冯敏 杨益民 孙新民 郭木森 王昌燧 《Science China Chemistry》 SCIE EI CAS 2003年第5期465-472,共8页
The cross section of the Ru Porcelain sherds is analyzed from glaze to body for main elemental contents with EDXRF probe line scanning method. It is found that a midst layer with great variety of elemental contents ex... The cross section of the Ru Porcelain sherds is analyzed from glaze to body for main elemental contents with EDXRF probe line scanning method. It is found that a midst layer with great variety of elemental contents exists from glaze to body. Furthermore, every elemental content changes continuously and each has different shapes with different jumping-off points and end- points. It is certain that the midst layer is formed during the process of porcelain firing, when vitreous glaze infiltrates into the surface of porcelain body. It also well fits the phenomenon observed through different microscopes (stereo-microscope, polarizing microscope and SEM). 展开更多
关键词 EDXRF probe RU Porcelain line-scanning analysis midst layer.
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