CORE A

IMAGE

Here is an image of Core A. It is a long core section, so scroll down. The clear round pins on the left indicate the depth from the top of the core marked every 10 cm (ex: 800 = 800 cm down from the sediment surface).

MICROSCOPE IMAGE

To determine the sediment type, a slide can be made from a small sample of sediment and examined under the microscope. Here is what the “smear slide” would look like under special polarizing light.

<p>Image source: <a href="https://tmi.laccore.umn.edu/is">https://tmi.laccore.umn.edu/is</a></p>

Image source: https://tmi.laccore.umn.edu/is

The sediment is so small that it would take a scanning electron microscope to actually see the particles. Below is an image from a similar sediment sample.

<p>Image source: <a href="https://journals.plos.org/plosbiology/issue?id=10.1371/issue.pbio.v09.i06">https://journals.plos.org/plosbiology/issue?id=10.1371/issue.pbio.v09.i06</a></p>

Image source: https://journals.plos.org/plosbiology/issue?id=10.1371/issue.pbio.v09.i06

SMEAR SLIDE ANALYSIS

A close analysis of the slide provided the following components:

  • Calcareous nannofosssils: 95%
  • Foraminifera: 2%
  • Diatoms: 1%
  • Radiolaria: 2%
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