Geology Final (Exam 2)

Rocks that contain clay, silt and sand and gravel particles are what rocks?

Cross bedding and ripple marks are most characteristics of what rocks?

What are hot glowing clouds of volcanic ash and gas that can rush down slopes of volcanoes at 60 MPH?

A (blank) is a tabular concordant pluton where magma is injected between rock layers and domes the country rock above, creating a mushroom shape?

What magma is rich in iron and magnesium, and has lower viscosity magma and therefore flows long distances

Pahoehoe lava develops where there is (blank) lava viscosity versus Aa lava?

What volcanoes have low, flat, and broad profiles?

Composite cone volcanoes are (blank) explosive than shield volcanoes

What is NOT a reason for melting magma?

Surrounding country rock falls into the magma chamber. What is this an example of?

A tabular, discordant pluton that forms when magma fills in fractures cutting across rocks is a?

Small volcanoes that are formed of pyroclastic debris and may appear as parasites on other volcanoes are?

When magma in the volcanic conduit crystallizes and the softer material forming the slopes of volcanoes then erodes away, that forms a?

When sponge-like openings within a rock are infilled with mineral deposits that forms?

(Blank) lava has a smooth, ropy appearance.

The phenocrysts in porphyritic textures represent what cooling?

Plutons are what igneous structures?

(Blank) are large, bowl shaped summit depressions in volcanoes?

As time progresses, soil becomes?

Pressure release fracturing due to pressure release above igneous plutons that often form concentric fractured layers is?

The "Zone of Leaching" is the (blank) zone?

What climate is most favorable for soil formation?

Which of these is NOT used to combat soil erosion?

(Blank) are formed by the mechanical concentration of heavy mineral particles by currents?

(Blank) is formed from the buried remains of plants, typically in swampy areas associated with ancient deltas?

In a high energy environment, rounding and sorting of quartz grain will be?

(Blank) environments are lake environments

Cross-bedding and ripple marks are what sedimentary structures?

With greater "maturity," sedimentary rocks become more (blank) rich?

Which of the following is NOT a coal grade?

Ripples formed by waves are?

Rocks formed by inorganic precipitation of minerals are?

Places are associated with which rock type?