table1_Rapid Tephra Identification in Geological Archives With Computed Tomography: Experimental Results and Natural Applications.xlsx
Volcanic ash (tephra) horizons represent powerful chronological and stratigraphic markers: rapid and widespread deposition allows for correlation of geological records in time and space. Recent analytical advances enable identification of invisible ash (cryptotephra) up to thousands of kilometers fr...
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ftfrontimediafig:oai:figshare.com:article/13653692 2023-05-15T16:39:26+02:00 table1_Rapid Tephra Identification in Geological Archives With Computed Tomography: Experimental Results and Natural Applications.xlsx Willem G. M. van der Bilt Jan Magne Cederstrøm Eivind W. N. Støren Sarah M. P. Berben Sunniva Rutledal 2021-01-28T04:02:47Z https://doi.org/10.3389/feart.2020.622386.s002 https://figshare.com/articles/dataset/table1_Rapid_Tephra_Identification_in_Geological_Archives_With_Computed_Tomography_Experimental_Results_and_Natural_Applications_xlsx/13653692 unknown doi:10.3389/feart.2020.622386.s002 https://figshare.com/articles/dataset/table1_Rapid_Tephra_Identification_in_Geological_Archives_With_Computed_Tomography_Experimental_Results_and_Natural_Applications_xlsx/13653692 CC BY 4.0 CC-BY Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change tephra synthetic cores (phantoms) CT X-ray peat minerogenic ice core Dataset 2021 ftfrontimediafig https://doi.org/10.3389/feart.2020.622386.s002 2021-02-04T00:00:37Z Volcanic ash (tephra) horizons represent powerful chronological and stratigraphic markers: rapid and widespread deposition allows for correlation of geological records in time and space. Recent analytical advances enable identification of invisible ash (cryptotephra) up to thousands of kilometers from its volcanic source. This momentum has greatly expanded the reach and potential of tephrochronology: some deposits can now be traced across continents and oceans. However, the laborious laboratory procedures required to identify tephra horizons in geological archives hold back the pace of progress. By allowing the rapid visualization of ash at micrometer (µm) scales, computed tomography (CT) holds great promise to overcome these restrictions. In this study, we further demonstrate the potential of this tool for the tephra community with experimental results and applications on conventionally analyzed archives. A custom-made scanner helps us strike a balance between the convenience of whole-core medical scanners and the µm-resolution of micro-CT systems. Using basic image processing tools that can be readily mastered by tephrochronologists, we identified invisible horizons down to ∼500 shards in synthetic cores. In addition, procedures for the removal of image artifacts can be used to visualize other paleoenvironmental indicators such as bioturbation burrows, ice rafted debris or mineral dust. When applied on segments of manually counted natural archives, our approach captures cryptic glass shard maxima down to ∼300 shards/cm 3 . We also highlight the value of CT to help optimize sampling strategies by identifying micrometer-scale ash horizons that were not detected in shard count profiles. In conclusion, this work helps broaden the applicability of CT as a promising frontier in tephrochronology that can advance the field by optimizing the efficiency and accuracy of isochron detection. Dataset ice core Frontiers: Figshare Burrows ENVELOPE(163.650,163.650,-74.300,-74.300) |
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Open Polar |
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Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change tephra synthetic cores (phantoms) CT X-ray peat minerogenic ice core |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change tephra synthetic cores (phantoms) CT X-ray peat minerogenic ice core Willem G. M. van der Bilt Jan Magne Cederstrøm Eivind W. N. Støren Sarah M. P. Berben Sunniva Rutledal table1_Rapid Tephra Identification in Geological Archives With Computed Tomography: Experimental Results and Natural Applications.xlsx |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change tephra synthetic cores (phantoms) CT X-ray peat minerogenic ice core |
description |
Volcanic ash (tephra) horizons represent powerful chronological and stratigraphic markers: rapid and widespread deposition allows for correlation of geological records in time and space. Recent analytical advances enable identification of invisible ash (cryptotephra) up to thousands of kilometers from its volcanic source. This momentum has greatly expanded the reach and potential of tephrochronology: some deposits can now be traced across continents and oceans. However, the laborious laboratory procedures required to identify tephra horizons in geological archives hold back the pace of progress. By allowing the rapid visualization of ash at micrometer (µm) scales, computed tomography (CT) holds great promise to overcome these restrictions. In this study, we further demonstrate the potential of this tool for the tephra community with experimental results and applications on conventionally analyzed archives. A custom-made scanner helps us strike a balance between the convenience of whole-core medical scanners and the µm-resolution of micro-CT systems. Using basic image processing tools that can be readily mastered by tephrochronologists, we identified invisible horizons down to ∼500 shards in synthetic cores. In addition, procedures for the removal of image artifacts can be used to visualize other paleoenvironmental indicators such as bioturbation burrows, ice rafted debris or mineral dust. When applied on segments of manually counted natural archives, our approach captures cryptic glass shard maxima down to ∼300 shards/cm 3 . We also highlight the value of CT to help optimize sampling strategies by identifying micrometer-scale ash horizons that were not detected in shard count profiles. In conclusion, this work helps broaden the applicability of CT as a promising frontier in tephrochronology that can advance the field by optimizing the efficiency and accuracy of isochron detection. |
format |
Dataset |
author |
Willem G. M. van der Bilt Jan Magne Cederstrøm Eivind W. N. Støren Sarah M. P. Berben Sunniva Rutledal |
author_facet |
Willem G. M. van der Bilt Jan Magne Cederstrøm Eivind W. N. Støren Sarah M. P. Berben Sunniva Rutledal |
author_sort |
Willem G. M. van der Bilt |
title |
table1_Rapid Tephra Identification in Geological Archives With Computed Tomography: Experimental Results and Natural Applications.xlsx |
title_short |
table1_Rapid Tephra Identification in Geological Archives With Computed Tomography: Experimental Results and Natural Applications.xlsx |
title_full |
table1_Rapid Tephra Identification in Geological Archives With Computed Tomography: Experimental Results and Natural Applications.xlsx |
title_fullStr |
table1_Rapid Tephra Identification in Geological Archives With Computed Tomography: Experimental Results and Natural Applications.xlsx |
title_full_unstemmed |
table1_Rapid Tephra Identification in Geological Archives With Computed Tomography: Experimental Results and Natural Applications.xlsx |
title_sort |
table1_rapid tephra identification in geological archives with computed tomography: experimental results and natural applications.xlsx |
publishDate |
2021 |
url |
https://doi.org/10.3389/feart.2020.622386.s002 https://figshare.com/articles/dataset/table1_Rapid_Tephra_Identification_in_Geological_Archives_With_Computed_Tomography_Experimental_Results_and_Natural_Applications_xlsx/13653692 |
long_lat |
ENVELOPE(163.650,163.650,-74.300,-74.300) |
geographic |
Burrows |
geographic_facet |
Burrows |
genre |
ice core |
genre_facet |
ice core |
op_relation |
doi:10.3389/feart.2020.622386.s002 https://figshare.com/articles/dataset/table1_Rapid_Tephra_Identification_in_Geological_Archives_With_Computed_Tomography_Experimental_Results_and_Natural_Applications_xlsx/13653692 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/feart.2020.622386.s002 |
_version_ |
1766029781974908928 |