WorksheetsUnconformities in Rock
Total questions: 12
Worksheet time: 6mins
When scientists are trying to compare things to see which geological artifacts are older or younger rather than find the actual age of something, this is called ____________.
Relative aging
Geologica aging
approximate aging
absolute aging
Fossils such as footprints, burrows or droppings.
Index Fossils
Unconformities
Petrified Wood
Trace fossils
A gap in the sequence of sedimentary rock layers caused by erosion.
Inclusion
Unconformity
Cross-cutting
Isotope
Fossils made from organisms that were fairly common and existed only during a certain span of time, used to determine the age of rock layers.
Index Fossils
Unconformities
Inclusions
Trace Fossils
Horizontal layers are tilted and uplifted. New sediment is deposited on top.
Unconformities
Cross-Cutting
Angular Unconformities
Inclusions
This is when geologists match rocks and fossils from separate locations.
correlation
key beds
unconformity
uniformity
These are rocks or sediment layers that are used as a marker to correlate with other rock layers.
key beds
index fossils
major geologic events
unconformities
