Tag Archives: sea level

Seawater isotope ratios through time: sulfur and carbon

Low sea levels = heavy carbon, light sulfur in seawater

  • Low sea levels = more land space for plants = plants use lighter carbon = lighter carbon stuck on land = heavy carbon in the sea!
  • Low sea levels = less habitat for sulfate-reducing bacteria = less light sulfur in pyrite = more light sulfur in the sea!

High sea levels = light carbon, heavy sulfur in seawater

  • High sea levels = less space for plants = less light carbon uptake by plants = light carbon in the sea!
  • High sea levels = expanded habitat for sulfate-reducing bacteria = more light sulfur in pyrite = less light sulfur in the sea!

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Structure and formation of recent limestone (Miami & Key Largo) of Southern Florida

This post provides a brief overview of the formation and characteristics of recent limestone deposits in Southern Florida, the Miami Limestone and Key Largo Limestone. Most of this material was collected as part of a presentation for EOS 404S: Geology of Tropical Marine Environments in Spring 2013, but has been expanded and re-formatted here. Read more