104. The author is primarily concerned with
(A) advocating a return to an older methodologyThe passage is all about the practical importance of the new theory. A is false.
(B) explaining the importance of a recent theoryCORRECT!
(C) enumerating differences between two widely
used methodsThe difference was only mentioned in the first paragraph.
(D) describing events leading to a discoveryThe events mentioned was the alluvial deposits exposed. But this was just an example and the major topic is about exploration of those with buried gold deposits. D is not the main point.
(E) challenging the assumptions on which a theoryThe passage is about the imporance of the recent theory. E is false.
105. According to the passage, the widely held view of
Archean-age gold-quartz vein systems is that such
systemsIn the first paragraph, widely held view points that it is from metamorphic fluids.ANSWER: (A) were formed from metamorphic fluids
106. The passage implies that which of the following steps
would be the first performed by explorers who wish to
maximize their chances of discovering gold?
(A) Surveying several sites known to have been
formed more than two billion years agoWe don't know if all the sites with gold were formed within this time frame. This is OUT!
(B) Limiting exploration to sites known to have been
formed from metamorphic fluidMetamorphic fluid refers to the old view. This is OUT!
(C) Using an appropriate conceptual model to select
a site for further explorationThis is the challenge. Selecting the site. CORRECT
(D) Using geophysical methods to analyze rocks
over a broad areaGeophysical methods is not supported by the author.
(E) Limiting exploration to sites where alluvial gold
has previously been foundThe author admits to other possible areas with gold buried. This is false.
107. Which of the following statements about discoveries
of gold deposits is supported by information in the
(A) The number of gold discoveries made annually
has increased between the time of the original
gold rushes and the present.No increase was mentioned. OUT!
(B) New discoveries of gold deposits are likely to be
the result of exploration techniques designed to
locate buried mineralization.If modern explorers are using this technique then it's more likely new discoveries will be through this method. CORRECT.
(C) It is unlikely that newly discovered gold deposits
will ever yield as much as did those deposits
discovered during the original gold rushes.We don't know about the amount of yield.
(D) Modern explorers are divided on the question of
the utility of simple prospecting methods as a
source of new discoveries of gold deposits.This divide is not mentioned...
(E) Models based on the theory that gold originated
from magmatic fluids have already led to new
discoveries of gold deposits.not mentioned....
108. It can be inferred from the passage that which of the
following is easiest to detect?
(D) A gold deposit that has shed alluvial goldIt is mentioned in the passage that this kind of deposits are easily found through prospecting method. CORRECT.
109. The theory mentioned in lines 1-5 relates to the
conceptual models discussed in the passage in which
of the following ways?
(A) It may furnish a valid account of ore-forming
processes, and, hence, can support conceptual
models that have great practical significance.CORRECT.
(B) It suggests that certain geological formations,
long believed to be mineralized, are in fact
mineralized, thus confirming current conceptual
(C) It suggests that there may not be enough
similarity across Archean-age gold-quartz vein
systems to warrant the formulation of
conceptual models.The author is supporting the conceptual models. THis is false.
(D) It corrects existing theories about the chemical
halos of gold deposits, and thus provides a basis
for correcting current conceptual models.Halos are one of these methods that is considered by the author as not always helpful.
(E) It suggests that simple prospecting methods still
have a higher success rate in the discovery of
gold deposits than do more modern methods.This is opposite the author's belief.
110. According to the passage, methods of exploring for
gold that are widely used today are based on which of
the following facts?
(A) Most of the Earth's remaining gold deposits are
(B) Most of the Earth's remaining gold deposits are
exposed at the surface.
(C) Most of the Earth's remaining gold deposits are
buried and have no surface expression.The passage is about exploration of buried gold deposits. this is the answer.
(D) Only one type of gold deposit warrants
exploration, since the other types of gold
deposits are found in regions difficult to reach.
(E) Only one type of gold deposit warrants
exploration, since the other types of gold
deposits are unlikely to yield concentrated
quantities of gold.
Impossible is nothing to God.