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GEOL 101: EXAM 2
The Cambrian explosion refers to... |
The sudden appearance of animal in the fossil record |
Geologically, the oldest part of the North American continent is... |
The shield and interior platform |
The most important products of the 1950's era prebiotic soup experiments were... |
amino acids |
Geologists recognize a reverse fault as one in which... |
Rocks in the hanging wall have moved upward |
Geologists are particularly interested in stromatolites since... |
these rocks hold some of the most important evidence for early life on Earth |
What about Mars is true/ |
There is plenty of evidence for the presence of water in the past |
A mylonite texture is likely to have developed as a result of... |
intense shearing forces |
The formation of the San Andreas fault is best described as... |
oblique convergence of an oceanic ridge with the North American plate |
The rocks exposed at the base of the Grand Canyon |
are separated from overlying sedimentary strata by an angular unconformity |
A marble cylinder compressed int he lab at lower crustal pressures... |
Will like show ductile deformation |
The number of radioactive atoms left after three half-lives have passed is... |
1/8 of the original population |
Most geologists believe the earliest fossil evidence of life on Earth occured... |
after the late heavy bombardment period of impacts |
Which of these is characteristic of a right bend of a right-lateral fault? |
Normal faults |
During the metabolic process of photosynthesis... |
organisms store glucose and consume carbon dioxide |
Rock strata are separated by great distances are correlated by matching... |
fossil assemblages |
Oxygen was first added to the primitive atmosphere of Earth by... |
photosynthesis of microorganisms (cyanobacteria) |
Which statement about the geological time scale is true... |
geological era are defined by changes in fossil assemblages |
Which best describes the evolution of hte western NA continent... |
multiple accretion of island arcs and buoyant continental fragments |
The series of evens describing the formation of the solar system is called... |
the nebular hypothesis |
The assembly of supercontinent Pangea occured as a result of.. |
A series of orogenic, or mountain building, events |