XIII. Questions (351-375) Flashcards
A vent or ground opening from which steam and volcanic gases escape.
Volcanic vent
A fold with a core of stratigraphically younger rocks.
Syncline
A volcanic cone consisting of alternating layers of pyroclastic deposits and lava.
Stratovolcano
A fold whose apex is inclined rather than horizontal.
Plunging fold
A mineral can have more than one streak.
False
A typical limestone can be produced by the lithification of deep-sea calcareous oozes.
True
A dirty sandstone (graywacke) buried deep within the Earth, melted, and cooled to become solid rock again.
Igneous rock
A high-grade metamorphic rock is one that has been altered a great deal from the original parent material.
True
A beautiful and typical stratovolcano is Mt. Mayon, Philippines.
True
A magma that begins cooling underground and forms hornblende phenocrysts will produce a porphyritic volcanic rock.
Porphyritic volcanic rock
A biogenic sedimentary rock composed almost entirely of carbonate minerals (usually mostly calcite) is called a limestone.
Limestone
A 2D diagram that explains the frequency of structural lineations in a given orientation, like a histogram.
Rose diagram
A destructive tectonic plate boundary.
Subduction zone
A lateral subdivision of a stratigraphic unit as distinguished from other bodies of different appearance or composition.
Facies
A surface caused by erosion during the landward migration of a barrier island.
Ravinement
A fault along which the movement is essentially horizontal, i.e., parallel to the strike; also called transcurrent fault.
Strike-slip fault
A strike-slip fault in which the block on the left appears to have moved towards the observer; also known as sinistral fault.
Left-lateral fault
A coastline in Bohol retreated due to uplift.
Uplift
A unit of matter which cannot be broken down into other substances by ordinary chemical methods.
Element
A barrier island is a long, narrow island separated from the mainland by a lagoon.
True
A 3rd order stream is narrower than a 1st order stream.
False
A bar that connects an island with a mainland is called a tombolo.
Tombolo
Streams intersecting the water table and receiving ground water flow.
Effluent stream
A chemical compound in which molecules of one material form a solid lattice that encloses molecules of another material.
Clathrate
