What Would You Name a Black, Phaneritic Rock with 25

question 95

Multiple Choice

What would you name a black, phaneritic rock with 25% Ca-plagioclase and the remainder composed of olivine, pyroxene, and amphibole?

• A)gabbro
• B)olivine granite
• C)hornblende diorite
• D)porphyritic peridotite

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Definitions:

Fontanel

Soft spots on an infant's skull where the bones have not yet fused, allowing for growth of the brain and skull.

Diaphysis

The shaft or central part of a long bone, which is typically cylindrical in shape and provides leverage and major weight support.

Sinus

A hollow, cavity, or channel within the body, often referring to the air-filled spaces in the skull that open into the nasal cavity.

Appendicular Skeleton

The portion of the skeleton of vertebrates consisting of the bones that support the appendages (limbs), including the shoulder and pelvic girdles.