Evidence of probable paleotsunami deposits on Kho Khao Island, Phang Nga Province, Thailand

Yawsangratt, S.; Szczuciński, Witold; Chaimanee, N; Chatprasert, S.; Majewski, Wojciech; Lorenc, Stanisław

doi:10.1007/s11069-011-9729-4

Cited by 40 publications

(17 citation statements)

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“…The published results include works focused on the overall geological impacts of the tsunami Choowong et al, 2007;Kelletat et al, 2007;, on the detailed analyses of sedimentary prop-erties of sandy deposits (Hori et al, 2007;Choowong et al, 2008a, b;Fujino et al, 2008Fujino et al, , 2010Goto et al, 2008;Matsumoto et al, 2008;Alam, 2010;Naruse et al, 2010) and on the boulder deposits (Goto et al, 2007;Yawsangratt et al, 2009). Also studied were specific aspects such as the micropaleontological features of the deposits (Hawkes et al, 2007;Kokociński et al, 2009;Sawai et al, 2009;Yawsangratt et al, 2012), their geochemistry (Szczuciński et al, 2005;Boszke et al, 2006;Kozak et al, 2008;Zioła-Frankowska et al, 2009), their physical properties (Bishop et al, 2005) and their mineralogy . The IOT deposits were also presented in papers focused on paleotsunami deposits (Jankaew et al, 2008Fujino et al, 2009;Brill et al, 2011;Yawsangratt et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Also studied were specific aspects such as the micropaleontological features of the deposits (Hawkes et al, 2007;Kokociński et al, 2009;Sawai et al, 2009;Yawsangratt et al, 2012), their geochemistry (Szczuciński et al, 2005;Boszke et al, 2006;Kozak et al, 2008;Zioła-Frankowska et al, 2009), their physical properties (Bishop et al, 2005) and their mineralogy . The IOT deposits were also presented in papers focused on paleotsunami deposits (Jankaew et al, 2008Fujino et al, 2009;Brill et al, 2011;Yawsangratt et al, 2012). The aforementioned works revealed that the IOT deposits varied considerably regarding extent, thickness, grain size (mud to boulders), internal structures, composition and preservation potential.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

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

Self Cite

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“…Sedimentary effects of recent tsunamis have been described from various locations (e.g. Szczuciński et al 2006;Goto et al 2007Goto et al , 2009Goto et al , 2011Paris et al 2009;Matsumoto et al 2010;Yawsangratt et al 2009Yawsangratt et al , 2012.…”

Section: Introduction -Palaeotsunami Studiesmentioning

confidence: 99%

“…This often results in an admixture of open shelf faunal elements in shallow-water deposits or in mixing of marine and terrestrial elements (Kaźmierczak and Goldring 1978;Bussert and Aberham 2004;Cantalamessa and Di Celma 2005;Paris et al 2009). Another feature is the common incorporation of ripped-up mud clasts within fine-grained deposits (Yawsangratt et al 2012) or, more generally, a bimodal character of the deposited material, with large clasts embedded within finer sediments (Cantalamessa and Di Celma 2005;Yawsangratt et al 2009). Some authors point to the association of tsunami deposits with other structures that can be attributed to seismic shocks, such as neptunic dykes or synsedimentary faults (Spaletta and Vai 1984;Pratt 2002), or with plastic deformations of the underlying sediments (Michalik 1997).…”

Section: Introduction -Palaeotsunami Studiesmentioning

confidence: 99%

Stromatoporoid Beds and Flat-Pebble Conglomerates Interpreted as Tsunami Deposits in the Upper Silurian of Podolia, Ukraine

Łuczyński¹,

Skompski²,

Kozłowski³

2014

Acta Geologica Polonica

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ABSTRACT:Łuczyński, P., Skompski, S. and Kozłowski, W. 2014. Stromatoporoid beds and flat-pebble conglomerates interpreted as tsunami deposits in the Upper Silurian of Podolia, Ukraine. Acta Geologica Polonica, 64 (3), 261-280. Warszawa.Tsunami deposits are currently a subject of intensive studies. Tsunamis must have occurred in the geological past in the same frequency as nowadays, yet their identified depositional record is surprisingly scarce. Here we describe a hitherto unrecognized example of probable palaeotsunamites.The Upper Silurian (Pridoli) carbonate succession of Podolia (southwestern Ukraine) contains variously developed event beds forming intercalations within peritidal deposits (shallow water limestones, nodular marls and dolomites). The event beds are represented by stromatoporoid and fine-grained bioclastic limestones, in some places accompanied by flat-pebble conglomerates. The interval with event beds can be traced along the Zbruch River in separate outcrops over a distance of more than 20 km along a transect oblique to the palaeoshoreline. The stromatoporoid beds have erosional bottom surfaces and are composed of overturned and often fragmented massive skeletons. The material has been transported landward from their offshore habitats and deposited in lagoonal settings. The flat-pebble conglomerates are composed of sub-angular micritic clasts that are lithologically identical to the sediments forming the underlying beds.Large-scale landward transport of the biogenic material has to be attributed to phenomena with very high energy levels, such as tropical hurricanes or tsunamis. This paper presents a tsunamigenic interpretation. Morphometric features of redeposited stromatoporoids point to a calm original growth environment at depths well below storm wave base. Tsunami waves are the most probable factor that could cause their redeposition from such a setting. The vastness of the area covered by parabiostromal stromatoporoid beds resembles the distribution of modern tsunami deposits in offshore settings. The stromatoporoid beds with unsorted stromatoporoids of various dimensions evenly distributed throughout the thickness of the beds and with clast-supported textures most probably represent deposition by traction. In some sections, the stromatoporoids are restricted to the lowermost parts of the beds, which pass upwards into bioclastic limestones. In this case, the finer material was deposited from suspension. The coexistence of stromatoporoid beds and flat-pebble conglomerates also allows presenting a tsunami interpretation of the latter. The propagating tsunami waves, led to erosion of partly lithified thin-layered mudstones, their fragmentation into flat clasts and redeposition as flat-pebble conglomerates.

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“…3 Phra Thong Monecke et al, 2008Malik et al, 2011Yawsangratt et al, 201120 Martin et al, 2008MacInnes et al, 2010Peterson et al, 2008Luque et al, 2002, 2012 , 1995 …”

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地層中に存在する古津波堆積物の調査

Sawai

2012

Jour. Geol. Soc. Japan

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After the Tohoku tsunami, demand increased greatly for geologists with expertise in the geology of tsunami deposits, who could study prehistoric tsunami deposits. This paper reviews, for those new to tsunami geology, how geologists have studied tsunami deposits during the last two decades. Preliminary identification of a paleotsunami deposit is based on the identification of anomalous sand deposits in peat or mud that was deposited in a low-energy environment. Anomalous deposits can then be evaluated using several criteria, such as lateral extent of the deposit, changes in thickness and grain size, sedimentary structures, single or multiple vertical grading, floral and faunal fossils within the deposits, synchroneity of environmental changes, and correlation with historical records of earthquakes. In this process, a multi-proxy approach is used to discount non-tsunami processes such as floods and storms. Identified tsunami deposits are dated using radiocarbon, lead-, cesium-, tephrochronology, and optically stimulated luminescence dating methods. For radiocarbon dating, appropriate selection of materials for analysis is especially crucial for constraining the age of a tsunami. Plant macrofossils or fossil insects within samples from sediments immediately over-or underlying a tsunami deposit will constrain its age well, whereas a bulk peat sample will not. The lateral extent of continuous tsunami deposits allows estimation of a minimum area of tsunami inundation. A meaningful reconstruction of the area of inundation, however, also requires adjustments for changes of the shoreline over the last few thousand years. In studies of paleotsunami deposits, we need to be aware of the uncertainties inherent in geological records. For example, geologic dating at a particular site rarely has the precision to distinguish between a single giant tsunami and a series of small ones.

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Evidence of probable paleotsunami deposits on Kho Khao Island, Phang Nga Province, Thailand

Cited by 40 publications

References 31 publications

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

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

Stromatoporoid Beds and Flat-Pebble Conglomerates Interpreted as Tsunami Deposits in the Upper Silurian of Podolia, Ukraine

地層中に存在する古津波堆積物の調査

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