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Gitchie Manitou State Park Sioux Quarzite
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What is the name for the bottom oldest layer of rock?
The bottom layer of rock in a geologic sequence is usually called the basement layer.
How is the geologic column in relative dating?
The geologic column is the result of the core sample showing layers of artifacts and material. Since some of these can be carbon dated, a relative time period can be established.
How are rock layers arranging the geologic column?
The oldest rocks (layers) are at the bottom. The youngestrocks (layers) are at the top
What is the geologic law that scientists use to date the crust by studying the layers of rocks called?
The law of superposition states that the oldest strata in an undisturbed formation of rock are the oldest.
Which new york state fossil is found in rock of the same period of geologic history as Meekoceras?
Coelophysis
What are two ways that a rock layer can cause a gap in geologic record?
When rock layers are eroded or when a sediment is not deposited for a long period of time.
Why is rock gypsum a sedimentary rock?
Gypsum is a mineral that was formed by layers of sediment , fine particles, that were deposited over a period of time, and then subjected to geologic forces.
What are the geologic periods named from?
Most geologic periods are named for the location where rock formations were first found that contained fossils from that period, some others (e.g. Carboniferous) were named for materials associated with the fossils.
What type of dating involves half-lives and can tell in which geologic period a rock was formed?
This is called absolute, isotopic, or radiometric dating.
Which New York State fossil is found in rock's of the same period of geologic history as meekpceras?
The Sea Scorpion (Eurypterus remipes).
Which of the following is most accurate in helping pinpoint a time period on the geologic time scale during which a rock layer was formed?
index fossils
Diffrenciate geologic time with geologic column?
Geologic column is an ordered arrangement of rock layers that is based on the relative age of the rocks. Geologic time is the time IN the geologic column.
