Nick Steno
How many principles did Nicholas Steno develop?
What is four?
The remains of once living organisms from a different geologic time period
What are fossils?
Occurs when the layers of rock curve or bend.
What type of rock is formed from cooling magma?
What is igneous?
A type of rock dating that tells scientists what is older and newer?
Which principle states that sedimentary rocks are deposited in layers that can be acted upon by geologic forces?
What is original horizontality?
Two criteria for index fossils
What are widely distributed and existed for a brief period of time?
Occurs when layers of sediment change from horizontal to slanted.
What is tilting?
A type of rock formed together from mixtures of rocks, formed in layers.
What is sedimentary?
A type of rock dating that gives scientists a specific time or age or a rock layer or fossil.
Which principle states that sediments spread out in all directions until they are separated due to erosion?
What is lateral continuity?
Fossils used for dating and correlating the strata in which they are found.
What are index fossils?
Geologic change where an area of rock is pushed vertically upward.
What is uplift?
The age of when the Grand Canyon started forming
What is 5-6 million years?
The name of a scientist who studies rocks
What is a geologist?
Which principle states that younger layers of sediment rock are on top and the older ones are on the bottom?
What is the law of superposition?
What does an index fossil tell us about the top layer of rock in Bryce Canyon compared to the same index fossil in the bottom rock layer in the Grand Canyon?
What is "the layers are the same age"?
Another name for a layer of rock
What is strata?
Process where materials are worn away by wind, ice, or water, and transported by natural forces.
What is erosion?
When molten rock pushes up from under a rock making a newer, younger later
What is an (igneous) intrusion?
What rock feature shows a gap in the rock record due to lack of deposition or erosion?
What index fossils can tell you about other fossils besides relative age
What is its environment?
The laying down of sediment by water, sea, etc into layers
What is deposition?
The process of the Colorado River carving out the Grand Canyon
What is downcutting?
a break in Earth's layers caused by geologic forces
What is a fault?