Chemical signatures of palaeotsunamis: A forgotten proxy?

Chagué‐Goff, Catherine

doi:10.1016/j.margeo.2010.01.010

Cited by 142 publications

(92 citation statements)

References 40 publications

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“…Thus, Sr can move farther seaward than Ba. Therefore, the Sr/Ba ratio is a useful indicator of marine and terrigenous environments, where the ratio increases from terrigenous, paralic, and marine lithofacies [50][51][52]. The three coals in the present work are different from the Upper No.…”

Section: Authigenic Mineralsmentioning

confidence: 97%

Mineralogical and Geochemical Characteristics of the Early Permian Upper No. 3 Coal from Southwestern Shandong, China

et al. 2016

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Abstract:The Upper No. 3 coal of the Early Permian age is a major workable seam in the southwestern Shandong coalfield, which is located in the eastern part of North China. From Early Jurassic to Neogene, the coalfield was subjected to intensive tectonic processes, leading to a significant rearrangement in depth of coal seams. In this paper, three Upper No. 3 coals occurring at´228,´670 and´938 m in the Luxi, Liangbaosi, and Tangkou mines, respectively, were collected to investigate their mineralogical and geochemical characteristics, with emphasis on modes of occurrence and origin of epigenetic minerals. The three coal seams are similar in vitrinite reflectance, volatile matter yield, and maceral components, suggesting insignificant influence from the tectonic activities on coal rank. Terrigenous minerals (e.g., kaolinite and quartz) are comparable in both types and distribution patterns in the three coals. The presence of siderite and pyrite of syngenetic or penecontemporaneous origin indicate they were emplaced during peat accumulation. The distribution of epigenetic minerals (e.g., calcite, ankerite, and dolomite) are associated with the underground water activities, which were Ca (Mg, Fe)-bearing.

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Section: Authigenic Mineralsmentioning

confidence: 97%

Mineralogical and Geochemical Characteristics of the Early Permian Upper No. 3 Coal from Southwestern Shandong, China

et al. 2016

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“…Onshore tsunami deposits are characterised by a complex set of diagnostic features that have been presented in many studies (e.g., Dawson and Shi, 2000;Goff et al, 2001;Shiki et al, 2008;Bourgeois, 2009;Mamo et al, 2009;Chagué-Goff, 2010;Goto et al, 2010;Chagué-Goff et al, 2011). However, such criteria have not yet been summarised for offshore tsunami deposits, and the published data are limited.…”

Section: Diagnostic Features Of Offshore Tsunami Depositsmentioning

confidence: 99%

Sedimentary deposits left by the 2004 Indian Ocean tsunami on the inner continental shelf offshore of Khao Lak, Andaman Sea (Thailand)

Sakuna

Szczuciński

Feldens³

et al. 2012

Earth Planet Sp

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Tsunami waves leave sedimentary signatures both onshore and offshore, although the latter are hardly known. The objective of the present study is to provide new evidence for the 2004 Indian Ocean tsunami deposits left on the inner continental shelf of the Andaman Sea (Thailand) and to identify diagnostic sedimentological and geochemical properties of these deposits. Based on extensive seafloor mapping, three sediment cores were selected for study and were analysed for their sedimentary structures, grain size composition, chemical elemental composition, physical properties and 210 Pb activity. Sediment cores retrieved from shallow water (9-15 m) within 7.5 km off the shore revealed distinct event layers, which were interpreted as being tsunami deposits. These 20-25 cm thick deposits were already covered with post-tsunami marine sediments. They were composed of several units, marine sand layers alternating with poorly sorted mud with terrigenous and anthropogenic components, representing different hydrodynamic conditions (probably during run-up and backwash phase). These sedimentological observations were supported by geochemical and physical data and were confirmed using 210 Pb dating. A sediment core taken from a depth of 57 m at a distance of 25 km offshore did not reveal clear event deposits. Comparisons with available data from offshore tsunami deposits showed that there is no single set of signatures that could be applied to identify this kind of deposits.

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“…The explicit identification of paleotsunami deposits is often difficult mainly because the tsunami deposits may be represented by various sediment types and may be similar to other deposits, such as storm deposits (Morton et al, 2007;Switzer and Jones, 2008). Until now, there has been no simple universal diagnostic set of criteria that can be applied to analyse tsunami deposits with certainty (Dawson and Shi, 2000;Goff et al, 2001;Scheffers and Kelletat, 2003;Shiki et al, 2008;Bourgeois, 2009;Chagué-Goff, 2010;Peters and Jaffe, 2010;Goff et al, 2012). The second reason to study the recent tsunami deposits is to potentially gain insight into the processes and forces that exist during the tsunami inundation.…”

Section: Introductionmentioning

confidence: 99%

26 December 2004 tsunami deposits left in areas of various tsunami run up in coastal zone of Thailand

Szczuciński

Rachlewicz

Chaimanee³

et al. 2012

Earth Planet Sp

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The tsunami deposits left by the 26 December 2004 tsunami in the coastal zone of Thailand were studied within two months of the event and before any significant postdepositional changes could occur. The sediment structure and texture (grain size), as well as its thickness and spatial distribution, were documented for the tsunami deposits in 12 shore-perpendicular transects from areas of various tsunami runup and wave heights. The tsunami deposits were as thick as 0.4 m and were located as far as 1.5 km inland. They were composed mostly of poorly sorted sand and often consisted of one to four normally graded, massive or laminated layers. The deposits generally became finer in the landward direction; however, landward thinning trend of the deposits is not clear, and the maximum accumulation often is not located close to the shoreline but rather is further inland. In comparable coastal environments with similar available sediment sources the tsunami size (represented as the tsunami runup height) is reflected in the resulting deposits. Larger tsunamis are associated with deposits that are thicker, have a maximum accumulation located farther inland, include a finer sediment fraction (likely from deeper offshore areas) and frequently are composed of normally graded layers.

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Chemical signatures of palaeotsunamis: A forgotten proxy?

Cited by 142 publications

References 40 publications

Mineralogical and Geochemical Characteristics of the Early Permian Upper No. 3 Coal from Southwestern Shandong, China

Mineralogical and Geochemical Characteristics of the Early Permian Upper No. 3 Coal from Southwestern Shandong, China

Sedimentary deposits left by the 2004 Indian Ocean tsunami on the inner continental shelf offshore of Khao Lak, Andaman Sea (Thailand)

26 December 2004 tsunami deposits left in areas of various tsunami run up in coastal zone of Thailand

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