Microtextural analysis of quartz grains of tsunami and non-tsunami deposits – A case study from Tirúa (Chile)

Bellanova, Piero; Bahlburg, Heinrich; Nentwig, Vanessa; Spiske, Michaela

doi:10.1016/j.sedgeo.2016.08.001

Cited by 31 publications

(19 citation statements)

References 26 publications

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“…This result is of crucial importance for the sedimentological study of past and present extreme wave events (tsunami and storms; Costa et al 2012 andBellanova et al 2016) because it suggests clearly that the physical conditions (flow velocity, sediment concentration, etc.) associated with tsunamis and storms are favorable to the imprinting of sediment grains with mechanical marks, thus an increase in such a signature is likely in tsunami and storm deposits.…”

Section: Discussionmentioning

confidence: 91%

“…Other authors subsequently (e.g., Vos et al 2014) also used a similar number of grains for their microtexture provenance studies. Moreover, Bellanova et al (2016) used a larger number of grains per sample (> 100 grains) but with no features observed that differentiate different sedimentary environments, which was probably due to local sedimentary and geomorphological conditions, or because observations were made on only one size fraction which might have masked some of the distinctive characters of the grains. Costa et al (2012) observed that quartz grains larger than 1 phi tend to present more dissolution features than those smaller than 3 phi (as a consequence of the smaller mobility of the latter).…”

Section: Discussionmentioning

confidence: 99%

“…The authors' own experience suggests 12 grains as a minimum of grains to be representative of a sample, although it is advisable to take this number to a value closer to 30 (statistical representativeness of results have been discussed in Costa et al, 2012;Vos et al, 2014 andBellanova et al, 2016). Each separated grain is subsequently coated with Au or C, the samples mounted on the stub, and taken to the SEM, where images (photomicrographs; one grain per photo) are obtained and afterwards used to depict and characterize the micromorphology of the grains.…”

Section: Methodsmentioning

confidence: 99%

“…However, several studies (e.g., Williams et al 1998;Mahaney 2002;Peterknecht and Tietz 2011;Udayaganesan et al 2011;Costa et al 2012;Costa et al 2013;Vos et al 2014;Bellanova et al 2016) demonstrate progress in the application of this methodology by applying semi-quantitative approaches and developing stronger links with geological processes to confirm microtexture analysis as a technique of considerable utility, particularly in provenance studies.…”

Section: Microtextural Mechanical Imprints and Their Association Withmentioning

confidence: 99%

“…Numerous efforts (e.g., Krinsley and Margolis 1969;Pyokari 1997;Abu-Zeid et al 2001;Mahaney 2002;Bull and Morgan 2006;Costa et al 2009;Deane 2010;Costa et al 2012;Costa et al 2013;Vos et al 2014, Bellanova et al 2016) have been made to characterize surface microscopic signatures in quartz grains from a range of diverse sedimentary environments, but all are inferential and based on contingent geological variables. The results proposed have been not consensual in the interpretation of specific microfeatures and in the interpretation of some imprinting mechanisms or processes.…”

Section: Introductionmentioning

confidence: 99%

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Imprints In Silica Grains Induced During An Open-Channel Flow Experiment: Determination of Microtextural Signatures During Aqueous Transport

Costa

Park

Kim

et al. 2017

Journal of Sedimentary Research

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The aim of this work is to identify and characterize microtextural signatures in silica\glass grains (used as analogous to quartz) that are produced during aqueous transport at different flow velocities, with variable sediment concentrations, transport distances, and time intervals. To achieve this, an open-channel flow experiment was conducted with a mixture of sand and silica\glass microspheres in varying conditions -velocity (from 0.67 to 1.4 m/s), duration (1 or 10 minutes), distance (0 to 2.5 m) and sediment concentration (60% or 80%). Experimental conditions were used to replicate natural phenomena such as river superficial velocity or coastal swash processes.Before to the experiment the microsphere surfaces were imaged and clear of any microtextural imprint.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Microtextural Mechanical Imprints and Their Association Withmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Imprints In Silica Grains Induced During An Open-Channel Flow Experiment: Determination of Microtextural Signatures During Aqueous Transport

Costa

Park

Kim

et al. 2017

Journal of Sedimentary Research

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Surface microtextures of quartz grains and minor sedimentary components across the Paleolithic Jeongok‐ri sediments, Yeoncheon, South Korea

Baek

2023

J Quaternary Science

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The Jeongok‐ri Paleolithic site in the central Korean peninsula is known as the first findspot of Acheulean‐type hand axes in East Asia. Although many previous studies have investigated the depositional environments of Jeongok‐ri sediments across the Paleolithic occupation, they remain controversial. In this study, we collected an 11‐m‐long core to obtain evidence from systematic surface microtextures of quartz grains (SMQs) concerning depositional environments in the Jeongok‐ri archeological site. SMQs in the Jeongok‐ri sediments are characterized by dominant angular to subangular outlines and small to large conchoidal fractures with arcuate steps, as well as sparse V‐shaped percussion cracks; these features suggest short distances and subaqueous transportation with grain‐to‐grain collisions and violent impacts of quartz grains. On the basis of simultaneous sedimentation of the hosting silt deposits, our SMQ results suggest that Jeongok‐ri sediments were originally fluvial, regardless of their intermediate sedimentary history. This evidence from quartz grain microtextures is consistent with minor sedimentary components found in the Jeongok‐ri core sediments, such as diatom grains as microfossil constituents, along with macroscopic charcoals and titanium‐bearing detrital magnetite grains. The geological and geomorphological conditions of the Jeongok‐ri site are also favorable for floodplain environments given the position adjacent to river terraces formed by the previous lateral erosion of a meandering channel in the nearby Hantan River. Our findings will help to understand environmental conditions during the development of Paleolithic cultures in East Asia.

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Quartz grain microtextures in the Boca del Cielo and Chocohuital beaches in the Mexican Pacific, Chiapas state: implication on paleoenvironment

et al. 2022

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Microtextural analysis of quartz grains of tsunami and non-tsunami deposits – A case study from Tirúa (Chile)

Cited by 31 publications

References 26 publications

Imprints In Silica Grains Induced During An Open-Channel Flow Experiment: Determination of Microtextural Signatures During Aqueous Transport

Imprints In Silica Grains Induced During An Open-Channel Flow Experiment: Determination of Microtextural Signatures During Aqueous Transport

Surface microtextures of quartz grains and minor sedimentary components across the Paleolithic Jeongok‐ri sediments, Yeoncheon, South Korea

Quartz grain microtextures in the Boca del Cielo and Chocohuital beaches in the Mexican Pacific, Chiapas state: implication on paleoenvironment

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