首页|Structural and Chemical Characterization of the Ediacaran Embryo-Like Fossils via the Combination of 3D-XRM and FIB-SEM Approaches

Structural and Chemical Characterization of the Ediacaran Embryo-Like Fossils via the Combination of 3D-XRM and FIB-SEM Approaches

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The three-dimensional(3D)morphology,anatomy,and in-situ chemical composition anal-ysis of fossils are crucial for systematic paleontology and determining their phylogenetic positions.Scanning electron microscopy(SEM)coupled with energy-dispersive X-ray spectroscopy(EDS),offers valuable structural and chemical information for the analysis of fossils.However,its primary limitation is the restriction to two-dimensional surface data,which limits the exploration of fossils'3D complexi-ties.Conversely,3D X-ray microscopy(3D-XRM),also known as a novel form of micro-computed to-mography(micro-CT)facilitates the non-destructive 3D reconstruction of fossil specimens.Neverthe-less,it lacks the capability to provide in-situ compositional data.Acknowledging the constraints inher-ent in these individual techniques,and in response to the evolving requirements of paleontological re-search,this study introduces an integrated approach that combines 3D-XRM with EDS-coupled fo-cused ion beam scanning electron microscopy(FIB-SEM).This innovative strategy is designed to syner-gize the advantages of both techniques,thereby addressing challenges that conventional methods can-not.It enables the rapid identification of regions of interest(ROI)within fossil specimens at microme-ter resolution.Subsequently,this method collects detailed data on both 3D structures and chemical compositions at the nanometer scale for the identified ROI.This integrated approach represents a sig-nificant advancement in paleontological and geological research methodologies,promising to meet the increasing demands of these fields.

Embryo-like microfossilsstructural and chemical characterization3D-XRMFIB-SEM3D reconstruction

Qian Chen、Weichen Sun、Suping Wu、Zongjun Yin

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State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008,China

University of Chinese Academy of Sciences,Nanjing 211135,China

National Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaCAS Interdisciplinary Innovation Team

420220102022YFF0800100JCTD-2020-18

2024

10.1007/s12583-024-0008-1

地球科学学刊(英文版)
中国地质大学

地球科学学刊(英文版)

CSTPCD
影响因子：0.724
ISSN：1674-487X
年,卷(期)：2024.35(4)
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