Geology Removals Flashcards
Among the minerals on the crust, which minerals are the least common on the earth’s crust?
Mg (magnesium) in 2.1%
this describes the color of minerals in powdered form
streak
this texture indicates the highest level of metamorphism
Gneissose?
chemical weathering favors this climate
tropical
when aquifers are cut by a fault end exposed to the surface, this thing occurs:
springs
this type of landform marks the zone of accumulation of glaciers
cirque
this type of dune is ridge-like parallel to the net vector of two wind currents
longitudinal
these are causes of tsunamis except:
a. volcanic eruptions
b. fault movements
c. meteorite impacts
d. landslide
e. storms
e. storms
Active volcanoes can be found here except;
a. hotspots
b. O-O convergence
c. C-O convergence
d. Collision zones
e. Mid Oceanic Ridges
d. Collision zones
strong ground vibrations can be made by these:
- large landslides
- volcanic eruptions
- meteorite impact
- large trucks moving along the road
these structures are produced by compression, without fracturing the rock
Folds
these are the basis of mantle composition except:
a. moon composition
b. stony meteorite
c. iron meteorite
d. ophiolites
e. lava from hawaii
c. iron meteorite
these are rocks associated with violent eruptions except:
a. andesite
b. diorites
c. basalt
d. rhyolite
e. granites
c. basalt
these are fossils used to represent a specific period in time:
index fossils
the violent formation of the universe was said to be this theory:
Big Bang
these type of mass movement, occurs in an incline manner, with mixed rocks, soil, and other surface materials
debris avalanche
this type of landslide occurs during a storm, a few days after an earthquake
complex landslide
this stream recharges water to an aquifer
losing stream
quartz occurs rarely in this rock
peridotite
this type of aquifer has a designated recharge and discharge area
confined aquifer
a strike slip fault trends E-W Northern block moves slower to west
sinistral
layered gabbro are associated with this process
crystal settling
this part describes the orientation where cross-polarized light dims out
extinction angle
first vertebrate appear in this time
cambrian
these are long line of curved narrow ridges
Hogback
this type of biozone is based on, geographically coverage of an organism
taxon-range zone
this type of geomorphological landform is associated with plutons that failed to surface
Dome
this device measures the angle along the microscope
goniometer
this landform has fine sediments in the middle overlain by evaporites, surrounded by coarser sediments with cut and fill marks:
Lakes
this mapping technique uses the number of steps to measure distance
pace factor
this type of rock is associated with lack of surface drainage, clustered thick vegetation
carbonates
these are landforms often found in the middle of the river, associated with negative changes in velocity
braid bars
these are cliffs gentle slope on one side, steep slope on another
cuesta
seed bearing plants first appeared during this time:
carboniferous
Angiosperms are:
flowering plants
select which one is least effective when detecting metals
a. gravity
b. magnetometry
c. IP
d. Er
e. Seismic
e. Seismic
during exploration for Porphyry deposits you are looking for
Eroded volcanoes
assuming a constant temperature, this form into layered igneous deposits
chemical equilibrium
if the main product of the mine is copper, the occurrence of Gold during the extraction process is called:
Byproduct
these are often high grade ore, mixed with low grade ore to meet the requirements of the mill
sweetener
using a gravity technique for petroleum exploration, a good sign will be:
a negative anomaly
these textures can be found along incomplete mineral reactions:
disequilibrium textures
In Northwestern/western Leyte, the mountains are:
Fold mountains
which of the ophiolites/complexes has commercial amounts of Pentlandite:
Zambales
this software graphically displays the user’s data from the field
GIS
the arc from masbate to ozamis is
ancient negros arc
reptiles first appeared during:
carboniferous
this alteration zone refers to the porphyry stock:
potassic
these minerals are associated with the leached zones except:
a. cuprite
b. malachite
c. native copper
d. bornite
e. goethite
Bornite
What do you look for during explorations?
Mienral deposit
