Ancient Basketry on the Inside: X-ray Computed Tomography for the Non-destructive Assessment of Small Archaeological Monocotyledonous Fragments. Examples from South-east Europe

Mapping Intimacies ◽

10.21203/rs.3.rs-703053/v1 ◽

2021 ◽

Author(s):

Mila Andonova

Keyword(s):

Ct Scanning ◽

Archaeological Sites ◽

Potential Range ◽

Ray Method ◽

East Europe ◽

X Ray ◽

Non Invasive ◽

South East Europe ◽

X Ray Computed ◽

Non Destructive

Abstract This study proposes non-destructive assessment instrumentation, being the X-ray CT scanning, for the evaluation of archaeological basketry remains prior to any destructive analysis. There are three case studies, originating from two archaeological sites in South-east Europe, with three different stages of preservation (poor, sufficient and very good). In addition, there are two preservation modes – charring and desiccation – along with two conservation situations: treated and untreated with conservation agent fragments. The three different scenarios were chosen to explore the potential range of CT scanning technology when applied to monocotyledonous small-sized archaeological remains. It was proved that this non-invasive X-ray method is particularly suitable in the case of the often-disadvantaged ancient basketry remains.

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Ancient basketry on the inside: X-ray computed microtomography for the non-destructive assessment of small archaeological monocotyledonous fragments: examples from Southeast Europe

Heritage Science ◽

10.1186/s40494-021-00631-z ◽

2021 ◽

Vol 9 (1) ◽

Author(s):

Mila Andonova

Keyword(s):

Archaeological Sites ◽

Potential Range ◽

Southeast Europe ◽

Ray Method ◽

X Ray ◽

Non Invasive ◽

Destructive Analysis ◽

Computed Microtomography ◽

X Ray Computed ◽

Non Destructive

AbstractThis study proposes non-destructive assessment instrumentation, the X-ray MicroCT scanning, to evaluate archaeological basketry remains prior to any destructive analysis. Three case studies are originating from two archaeological sites in Southeast Europe, with three different stages of preservation (poor, sufficient and very good). In addition, there are two preservation modes—charring and desiccation—along with two conservation situations: treated and untreated with conservation agent fragments. The three different scenarios were chosen to explore the potential range of X-ray MicroCT scanning technology when applied to monocotyledonous small-sized archaeological remains. It was proved that this non-invasive X-ray method is particularly suitable for the often-disadvantaged ancient basketry remains.

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The use of diagnostic radiology to detect shell irregularities in the New Zealand paua (abalone) Haliotis iris

Laboratory Animals ◽

10.1258/0023677011911552 ◽

2001 ◽

Vol 35 (2) ◽

pp. 167-171 ◽

Cited By ~ 5

Author(s):

John C. Schofield ◽

Roseanne M. Grindley ◽

Jonathan A. Keogh

Keyword(s):

New Zealand ◽

Diagnostic Radiology ◽

Video Display ◽

Ray Method ◽

Marine Gastropods ◽

X Ray ◽

Non Invasive ◽

Display Unit ◽

Non Destructive ◽

Video Display Unit

A method is described for the non-destructive, non-invasive, detection of shell lesions in the New Zealand paua, a marine gastropod Haliotis iris using diagnostic radiology. The X-ray method reliably detected the presence of shell lesions in 96% of the cases examined once lesion dimensions exceeded 6.2 × 7.1 mm. The extent of lesions above this size can be reliably and accurately determined from X-ray images viewed on a video display unit (VDU). Biofouling on the outside of the shell can cause misdiagnoses. This method is a significant animal welfare refinement in the identification of marine gastropods with shell lesions, when compared with traditional techniques which kill the animals.

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A new CT scan methodology to characterize a small aggregation gravel clast contained in a soft sediment matrix

Earth Surface Dynamics ◽

10.5194/esurf-5-199-2017 ◽

2017 ◽

Vol 5 (1) ◽

pp. 199-209 ◽

Cited By ~ 12

Author(s):

Laurent Fouinat ◽

Pierre Sabatier ◽

Jérôme Poulenard ◽

Jean-Louis Reyss ◽

Xavier Montet ◽

...

Keyword(s):

Ct Scan ◽

Ct Scanning ◽

High Elevation ◽

X Ray ◽

The Past ◽

Erosion Processes ◽

X Ray Computed ◽

The Alps ◽

Non Destructive ◽

Small Aggregation

Abstract. Over the past decades, X-ray computed tomography (CT) has been increasingly applied in the geosciences community. CT scanning is a rapid, non-destructive method allowing the assessment of relative density of clasts in natural archives samples. This study focuses on the use of this method to explore instantaneous deposits as major contributors to sedimentation of high-elevation lakes in the Alps, such as the Lake Lauvitel system (western French Alps). This lake is located within a very steep valley prone to episodic flooding and features gullies ending in the lake. This variety of erosion processes leads to deposition of sedimentary layers with distinct clastic properties. We identified 18 turbidites and 15 layers of poorly sorted fine sediment associated with the presence of gravels since AD 1880. These deposits are respectively interpreted as being induced by flood and wet avalanche. This constitutes a valuable record from a region where few historical records exist. This CT scan approach is suitable for instantaneous deposit identification to reconstruct past evolution and may be applicable to a wider variety of sedimentary archives alongside existing approaches.

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A comparison of the use of X-ray and neutron tomographic core scanning techniques for drilling projects: insights from scanning core recovered during the Alpine Fault Deep Fault Drilling Project

Scientific Drilling ◽

10.5194/sd-22-35-2017 ◽

2017 ◽

Vol 22 ◽

pp. 35-42 ◽

Cited By ~ 2

Author(s):

Jack N. Williams ◽

Joseph J. Bevitt ◽

Virginia G. Toy

Keyword(s):

Ct Scanning ◽

Ct Scans ◽

X Rays ◽

Deep Fault ◽

X Ray ◽

Alpine Fault ◽

Diameter Core ◽

X Ray Computed ◽

Non Destructive ◽

Drilling Project

Abstract. It is now commonplace for non-destructive X-ray computed tomography (CT) scans to be taken of core recovered during a drilling project. However, other forms of tomographic scanning are available, and these may be particularly useful for core that does not possess significant contrasts in density and/or atomic number to which X-rays are sensitive. Here, we compare CT and neutron tomography (NT) scans of 85 mm diameter core recovered during the first phase of the Deep Fault Drilling Project (DFDP-1) through New Zealand's Alpine Fault. For the instruments used in this study, the highest resolution images were collected in the NT scans. This allows clearer imaging of some rock features than in the CT scans. However, we observe that the highly neutron beam attenuating properties of DFDP-1 core diminish the quality of images towards the interior of the core. A comparison is also made of the suitability of these two scanning techniques for a drilling project. We conclude that CT scanning is far more favourable in most circumstances. Nevertheless, it could still be beneficial to take NT scans over limited intervals of suitable core, where varying contrast is desired.

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