The diagram below shows the formation of a volcanic arc. This arc was formed as a result of an oceanic plate moving underneath a continental plate in a subduction zone.Image courtesy of USGSVolcanic eruptions result in magma rising from the interior of Earth toward the surface. Lava is magma that reaches the surface of Earth. Magma and lava cool to form solid rocks that contain minerals from deep inside Earth. These rocks include metal ores, which are rocks that contain metallic minerals (such as copper, gold, silver, lead, and zinc).Based on this information, which of the following is most likely to be true? A. The distribution of metallic minerals on Earth cannot be predicted due to the inconsistent formation of these minerals. B. The distribution of metallic minerals on Earth cannot change over time because volcanic activity does not occur any more. C. The distribution of metallic minerals on Earth is uneven and depends on the geologic processes that occurred in the past. D. The distribution of metallic minerals on Earth is evenly spread across all continents because geologic processes occur uniformly.

Extrusive rocksGroup of answer choicesare generally made up of large mineralsare made up of precipitatesare also called volcanicform deep under volcanoes

Sedimentary rocks originate:in magma chamberswithin the Earth's crustinside volcanoesat the Earth's surfaceat the bottom of oceans

The Sierra Nevada batholith formed due to:Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer.aContinental hotspot volcanism and caldera formationbFlood basalts that formed during subduction of the Pacific plate under the North American platecCrystallization of granodioritic plutons above a Mesozoic subduction zonedFriction melting associated with the Neogene movement of the San Andreas faulteNone of the above

Determine which of the following statements relating to magma are correct.Magma is a type of metamorphic rockMagma forms when rocks meltWhen magma rises to Earth's surface, it causes a volcanic eruptionWhen magma is deep below the surface, it is referred to as lava

Extrusive igneous rocks form from lava which has cooled and solidifiedquickly, deep undergroundquickly, on Earth's surfaceslowly, on Earth's surfaceslowly, deep underground