Nature Contains Multiple Clocks and Calendars

Gonzalez and Richards describe life "At Home on a Data-Recorder" with many natural processes that make a record of the passage of time.

  1. Tree rings and other annual calendars
  2. Radiometric dating and the passage of time
  3. Experimenting with the past: astronomical measurements
Outline
A brief overview of time
Index

References
  Book of Nature Go Back





Tree rings and other annual calendars

  1. Bristlecone pine trees
  2. Lake varves
  3. Icefield annual layering
  4. Tidal layering
Outline
Index

References
  Book of Nature Go Back





Bristlecone Pine Trees

Bristlecone pine trees have been dated back to about 5000 BC and serve as a calibration source for carbon dating.

The illustration shows the measured carbon-14 in tree rings (solid line) compared to the ring number. The circles show measured carbon-14 compared to varve number in Steel Lake, Minnesota.

This data is from "Christian Geologists on Noah's Flood: Biblical and Scientific Shortcomings of Flood Geology", Gregg Davidson and Ken Wolgemuth.

Annual calendars
Outline
Index

References
  Book of Nature Go Back