Final Extra Credit Flashcards
What is the name of the most studied National Park. 6 Million people visit it a year.
Grand Canyon National Park
When was the Grand Canyon proclaimed as a National Park
February 26, 1919
The Grand Canyon exposes the largest section of geologic time on Earth. Canyon exposes an excellent record of ___ of the three eons of geological time.
Two
In the Grand Canyon the _______ River carries loads of _________
Colorado; Sediments
The sequence of rocks of the Grand Canyon range in age from __________ to _______ and are subdivided into basic rock units called formations
Proterozoic; Permian
What is a Stratigraphic Column?
A useful representation to describe the vertical location of rock units in a particular area. Shows a rock sequence, with the oldest rocks at the bottom and youngest at the top.
a _______ is a naturally occurring, inorganic, crystalline solid with a definite chemical composition and characteristic physical properties that are either uniform or valuable with-in definite limits.
Mineral
What types of rocks are: those that are cooled from molten rock or lava?
Igneous Rocks
Explain the Vishnu Basement Rocks
They consist of all the crystalline rocks (metamorphic and igneous) exposed at the bottom of the Grand Canyon.
Subsequent ______ removed most of these tilted layers leaving only the wedge-shaped remanents seen in the Eastern Canyon.
Erosion
What is a Pluton?
(A body of cooled magma) such as Zoroaster granite, intruded the metamorphosed Vishnu Rocks, usually forms deep underground and gradually cools.
What are the types of Sedimentary Environments
Marine and Non-Marine
Explain what a Conformity is
It is a buried erosional (or non-depositional) surface (an uncomfortable contact) separating two rock masses of different ages, indicating that sediment deposition was not continuous.
Angular Unconformity Vs. Major Angular Unconformity
