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Answer:
Angular unconformity
Explanation:
An angular unconformity is the contact that separates a younger, gently dipping rock unit from older underlying rocks that are tilted or deformed layered rock. The contact is more obvious than a disconformity because the rock units are not parallel and at first appear cross‐cutting. Angular unconformities generally represent a longer time hiatus than do disconformities because the underlying rock had usually been metamorphosed, uplifted, and eroded before the upper rock unit was deposited
Answer:
Mafic minerals are usually dark in color and have relatively high specific gravities (greater than 3.0). ... Felsic minerals are usually light in color and have specific gravities less than 3.0. Common felsic minerals include quartz, muscovite mica, and the orthoclase feldspars.
The speed of a wave measures how far one particular crest (or trough) moves in a given amount of time. The speed of the wave changes according to the following equation:
v = λ
* f
According this equation, it follows that as the speed and length of a wave decreases, the wave grows higher (the higher the frequency).
Answer:
Continental polar and maritime tropical.
Explanation:
- As these surface air mass are marked by high pressures and have cold temperatures, and the maritime air masses are cool, moist and unstable. Found along with the North American state.
- The continental is characterized by the dry winds, and the polar is hot air near the surface and the tropical air mass is warm and the arctic is extremely cold.
