In an Undisturbed Sequence of Sedimentary Rocks,younger Layers Overlie Older

question 37

Multiple Choice

In an undisturbed sequence of sedimentary rocks,younger layers overlie older layers,according to the principle of ________.

• A)superposition
• B)original continuity
• C)original horizontality
• D)uniformitarianism

---

Definitions:

Welded Igneous Texture

Characteristic of volcanic rock that forms when hot volcanic ash and debris fuse together under high temperature and pressure.

Magma

Molten rock beneath the Earth's surface, which can cool and solidify to form igneous rocks.

Pyroclastic Eruption

A volcanic eruption where hot fragments and magma are thrown into the air; also refers to a deposit or rock produced by such an event.

Dissolved Gas

Gas that is mixed in a solution, often referring to gases mixed in liquids such as water, which can affect water quality and marine life.