Each year trees add growth rings, which can indicate what sort of growing season the tree experienced.
Please consult Field Methods for a detailed description of the field equipment, including its use and care, and the actual methods of core collection and preservation. The cores should next be mounted and glued in to increment core holders and then the surface prepared for study following the protocols outlined in Lab Methods.
Following surface preparation, you can begin the process of crossdating.
All of the artifacts in a given stratum will be of approximately the same age, while those in strata above or below will be younger or older respectively.
Cross-dating can indirectly establish a date for artifacts and sites.
In this particular exercise, we wish to examine whether there is a relationship between local climate (precipitation) and tree rings using white oak (Quercus alba) in southeastern Ohio.
Each field team should obtain the appropriate field supplies from their instructor and obtain 3 increment cores from white oak trees at the chosen field site.A tree's growth rate changes in a predictable pattern throughout the year in response to seasonal climate changes, resulting in visible growth rings.Each ring marks a complete cycle of seasons, or one year, in the tree's life.Dendrochronology (or tree-ring dating) is the scientific method of dating tree rings (also called growth rings) to the exact year they were formed in order to analyze atmospheric conditions during different periods in history.Dendrochronology is useful for determining the timing of events and rates of change in the environment (most prominently climate) and also in works of art and architecture, such as old panel paintings on wood, buildings, etc.The most recently deposited materials are the youngest and are always at the top. It always applies except when some type of disturbance has occurred.