urmom

movement above and below the earth’s surface

the hydrologic cycle

what is often formed when a mountain stream enters a broad valley?

alluvial fans

the upper limit of the zone of saturation is called the?

water table

permeable layers of rock, such as sand or gravel that transmit groundwater freely are referred to as aquifers

true

which problem is not caused by groundwater withdrawal

soil infiltration

sedimentary rocks compose how much volume of the earth’s outermost 10 miles

5%

detrital sedimentary rocks are c;asifed on the basis of

partical size

what kinds of environmental data can we get from studying asymmetrical ripple marks

current direction

which sedimentary features would typically be found in shales but not in sandstone

mud cracks

what sedimentary structure are sand dunes likely to contain

cross-bedding

crescent shaped lake

oxbow lake

kentucky’s state rock

agate

kentucky’s state mineral

coal

what type of composition is granite

felisc

which rock is pyroclastic

tuff

what is the most mafic rock?

gabbro

bowen’s reaction series (all people are boring)

olivine, pyroxine, amp, biotite

what happens when lava flows and pyroclastic deposits

composite cone is created

Does aa lava has a blocky rough surface

true

are h20 and co2 the most abundant gases coming from a volcano

yes

large depression

caldrea

intraplate volcanoes aren’t located on plate boundaries

true

the average composition of rocks comprising a large composite cone is similar to a _____ magma?

andesitic

cinder volcanos produce pyroclastic, what type of rock will they form?

rhyolite

volcano type of mt. st. helens and fuji are composite cone?

true

violence of a volcano eruption is related to how easily gases escape from magma?

true

which one of the following best describes volcanism in thr cascade range,

plate subduction

molten rock beneath the surface is called?

magma

what rock with mineral grains too small to see

aphanitic

why does obsideian have a classy texture

it cools to quickly

explosive volcanic eruptions commonly produce what type of texture?

pyroclastic

which of the following igneous rocks exhibit aphanitic texture

andesite and rhyolite

what texture is basalt

aphanitic

what texture is granite

phaneritic

which of the following minerals has the highest crystallization temp

olivine

which rock type is most likely to contain calcium rich feldspar

basalt

changing a magmas composition by the incorporation of surrounding rock bodies

magma assimilation

what is the main criterion for classifying chemical sedimentary rocks?

mineral composition

shale

1/16 - 2

sandstone

greater than 2

conglomerate

less than 1/16

compaction is very important part of lithification process for which sediment?

mud

which is not a chemical sedimentary rock

arkose

limestone deposits are composed primarily of calcite

true

a cherty limestone would contain what?

silica and calcite

what sediment contains the most detail impressions of fossils

clay