Micro-structural images and analysis of Chicxulub Peak Ring material and Numerical Simulation Data of the Chicxulub Impact (NERC grant NE/P011195/1)
The data within this repository contains results from IODP-ICDP Expedition 364 which drilled the Peak Ring of the Chicxulub Crater, offshore Mexico. The offshore phase of this expedition occurred in April-May 2016, while the onshore phase occurred in October 2016. Further details of the IODP expedition can be found in the expedition report ( https://doi.org/10.14379/iodp.proc.364.2017). The data within the repository is sorted into 4 separate folders: 1 - Optical_Images 2 - SEM_Image_Processing 3 - UStage 4 - Numerical_Models 1 - Optical_Images This folder contains two sub-folders: Optical_WholeSection, which contains whole thin-section plane- and cross-polarised stitched images of thin sections from Hole M0077A, acquired using a Zeiss optical microscope at 4x magnification at Curtin Univesity, Perth. Section names follow IODP standard sample naming convention. Optical_Photos, which contains sub-sub-folders delimiting samples, each of which contains individual images of features of interest in thin sections from Hole M0077A, magnification and a brief description of the feature are indicated by the file name and scale bars are provided on the image. 2 - SEM_Image_Processing This folder contains 10 sub-folders, specific to the individual analysed section. Each sub-folder contains a whole thin-section Back-Scattered Electron (BSE) Scanning Electron Microscope (SEM) stitched tiff image with a pixel width of 750nm. Data was acquired using a Zeiss Ultra Plus SEM at the NHM London. The images were then processed to analyse pore spaces within the thin sections. All folders contain a text file called "TOTAL.txt" which records data from every pore within the thin section. If the thin section contained any cataclasite bodies, two additional text files "CATACLASITE.txt" and "CATACLASITE_TOTALAREA.txt" can be found, the former contains the pore analysis of the selected cataclasite area, the latter indicates the size of the selected cataclasite area. All image analysis was carried out using the ImageJ software package. 3 - UStage This folder contains one .xlsx file that summarises the results of universal-stage optical microscope analysis of quartz planar deformation features of thin sections within hole M0077A. 4 - Numerical Models This folder contains 5 text files. "asteroid.inp" and "material.inp" are the input model parameters of the iSALE shock physics code ( http://www.isale-code.de/redmine/projects/isale), these inputs were used to model the Chicxulub impact. Post-processing of the data was achieved using python to track the Stress-Strain-time paths of peak ring material, the remaining three .txt files contain the results of that analysis at different temporal resolutions.
Auriol Rae
Department of Earth Science & Engineering
Royal School of Mines, Exhibition Road
SW7 2AZ
Dr Gareth Collins
Petrophysics
Impact structures
Metamorphism
CHICXULUB [id=98909]
The collection of the data within this repository was supported by NERC (NE/P011195/1). The data within this repository was collected by Mr Auriol Rae at Imperial College London, supervised by Dr. Gareth Collins and Prof. Joanna Morgan, as part of a PhD thesis. The data acquisition and processing required for these data items would not have been possible without the work of many collaborators, consisting of, but not limited to: Tobias Salge (NHM), Nick Timms (Curtin University), Aaron Cavosie (Curtin University), Timmons Erikson (Curtin University, now LPI), Gordon Osinski (Western University), Richard Grieve (Western University), Jody Leung (Imperial College London), and the IODP-ICDP Expedition Scientists.
JPG file (Joint Photographic Experts Group)
tiff (Tagged Image File Format)
txt (text file)
http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item109609
nonGeographicDataset
non geographic dataset
Optical Microscopy, Electron Microscopy, Numerical Simulations
6b5d260f-f2e0-2e97-e054-002128a47908 XML
Hierarchy level name