2 Works

Carbonates: Porosity and permeability voxel to voxel

Leandro Ferreira, Rodrigo Surmas, Mônica Silva & Ricardo Peçanha
We acquired micro-CT images from two carbonate outcrops (Indiana Limestone and Silurian Dolomite), and used it to calculate porosity at each voxel (the samples are considered pure, since Indiana Limestone is 99% calcite, and Silurian Dolomite, 97% dolomite). For thus, we segmented pores (porosity=100%) and 'solid' (porosity=5%) and used the grayscale of these two points to calculate porosity directly in the image. Since there is no voxel with 100% solid at the resolutions used, we...

Data from: In situ filamentous communities from the Ediacaran (~563 Ma) of Brazil

Bruno Becker-Kerber, Gabriel De Barros, Paulo Paim, Gustavo Prado, Ana Zucatti, Abderrazak El Albani & Marc Laflamme
Precambrian filamentous microfossils are common and diverse. Nevertheless, their taxonomic assignment can be difficult due to their overall simple shapes typically lacking in diagnostic features. Here, we report in situ communities of well-preserved, large filamentous impressions from the Ediacaran Itajaí Basin (ca. 563 Ma) of Brazil. The filaments are uniserial (unbranched) and can reach up to 200 µm in width and up to 44 mm in length. They occur as both densely packed or sparsely...

Registration Year

  • 2020
    2

Resource Types

  • Dataset
    2

Affiliations

  • Petrobras (Brazil)
    2
  • Federal University of São Carlos
    1
  • Federal University of Rio de Janeiro
    1
  • University of Sao Paulo
    1
  • University of Toronto
    1
  • University of Poitiers
    1
  • University of Bristol
    1
  • Universidade do Vale do Rio dos Sinos
    1