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How are growth rings and ice cores useful in determining the ages of geologic events?
Geologists have learned to use growth rings in shells, as well as rhythmic layering in sediments and in glacial ice, to date events numerically back through recent Earth history.
What are annual growth rings most common in?
Annual growth rings are commonly studied in trees.
What might a series of thin growth rings in a tree indicate?
Hot dry summers.
What are other word for growth rings?
annual rings
Do invertebrates appear in growth rings?
A clams growth rings can be, tan, gold, brown, even red.
Which tree variety has no rings to indicate its age?
Palms do not show growth rings.
What do the rings on the clams shell indicate?
The rings on a clam show where the growth of one year ends. Basically you can count the rings to see how old the clam is just like a tree! Each ring shows the growth of that year.
What are growth rings and how are they made?
Tree growth rings (and some other kinds like those of shells) are caused by the difference in growth during the different seasons: autumn and winter less growth, spring & summer more growth.
What would make some of the tree rings wider then other rings?
the size of the rings would depend on the growth cycle of the tree. If the growth time for a certain year is longer, the ring will be wider, it the growth time of the year is shorter then the ring will be smaller.
What is the definition of tree growth rings?
thick layersmof secondary xylem , or wood , oftem form rings
Why are redwood trees that are grown in plantations not very decay-resistant?
The short answer is that growth rates are not everything with Redwood. In the growth rings, Redwood allocates tannins that help it resist decay. The closer the rings are together, the higher the concentration of tannins. Second-growth and plantation grown Redwood typically have large growth rings if managed under even-aged conditions, unless they are grown on longer rotations. Larger growth rings have less tannin per area than smaller growth rings. So if Redwood is grown to longer rotations under even-aged management or grown in uneven-aged management regimes, smaller growth rings lead to higher concentrations of the tannins that help it to resist decay.
What do tree rings tells us?
Thicker Rings indicate Optimal Conditions for Growth, Thinner Rings indicate the Opposite. Weather is the controlling Factor.
