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22 Cards in this Set
- Front
- Back
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At continental rifts, vast bodies of basaltic lava flow forth from fissures forming...
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Flood basalt
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Most terrestrial volcanic glass is...
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highly silicic in composition
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Pele's Hair consists of...
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thin strands of basaltic pyroclastic debris
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At transform boundaries...
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earthquakes are common, but volcanoes are absent
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Broad sediment-covered continental shelves are found along
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Passive margins
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Marine magnet anomaly belts are widest when and where...
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sea-floor spreading rates are relatively rapid
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The lithosphere is composed of...
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the crust and the uppermost part of the mantle
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The earth's magnetic field is generated by...
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the flow of the liquid outer core
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The most abundant mineral group is...
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silicates
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What type of magma has the greatest silica content?
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Felsic
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A rectangular section of the earth bounded by latitude and longitude
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Quadrangle
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The lithification of material from a pyroclastic flow forms a rock called
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Ignimbrite
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Material through which water readily flows is termed...
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Permeable
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In uniform sediments or rock at surface a __________ network is expected.
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Dendrite
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Horizontal sedimentary strata overlies tilited strata between the horizontal and tilted strata must be...
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Angular unconformity
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A fold shaped like an arch
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Anticline
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The outer portions of a craton where deformed rocks are covered by sediments is termed...
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Cratonic Platform
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Burial metamorphism produces...
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Nonfoliated rocks only
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In the formation of gniess from granite, the distinctive compositional bands form due to...
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Crystals dissolving and atoms and ions migrating and reorganizing as new crystals
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Net chemical change in metamorphic rock induced by reaction with hot groundwater is termed...
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Metasomatism
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Low-grade metamorphic rock being altered to form high-grade metamorphic rock is ________________ metamorphism
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Progrrade
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Marble and quartzite are nonfoliated rocks because...
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both are dominated by minerals the produce equant grains.
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