Practice Test: Reading Comprehension - 84 | 100 RCs for GMAT PDF Download

Most of the Earth’s remaining gold deposits are still molten.

Most of the Earth’s remaining gold deposits are exposed at the surface.

Most of the Earth’s remaining gold deposits are buried and have no surface expression.

Only one type of gold deposit warrants exploration, since the other types of gold deposits are found in regions difficult to reach.

Only one type of gold deposit warrants exploration, since the other types of gold deposits are unlikely to yield concentrated quantities of gold.

The number of gold discoveries made annually has increased between the time of the original gold rushes and the present.

New discoveries of gold deposits are likely to be the result of exploration techniques designed to locate buried mineralization.

It is unlikely that newly discovered gold deposits will ever yield as much as did those deposits discovered during the original gold rushes.

Modern explorers are divided on the question of the utility of simple prospecting methods as a source of new discoveries of gold deposits.

Models based on the theory that gold originated from magnetic fluids have already led to new discoveries of gold deposits.

advocating a return to an older methodology

explaining the importance of a recent theory

enumerating differences between two widely used methods

describing events leading to a discovery

challenging the assumptions on which a theory is based

It may furnish a valid account of ore-forming processes, and, hence, can support conceptual models that have great practical significance.

It suggests that certain geological formations, long believed to be mineralized, are in fact mineralized, thus confirming current conceptual models.

It suggests that there may not be enough similarity across Archean-age gold-quartz vein systems to warrant the formulation of conceptual models.

It corrects existing theories about the chemical halos of gold deposits, and thus provides a basis for correcting current conceptual models.

It suggests that simple prospecting methods still have a higher success rate in the discovery of gold deposits than do more modern methods.

Surveying several sites known to have been formed more than two billion years ago

Limiting exploration to sites known to have been formed from metamorphic fluid

Using an appropriate conceptual model to select a site for further exploration

Using geophysical methods to analyze rocks over a broad area

Limiting exploration to sites where alluvial gold has previously been found

I only

II only

I and II only

I and III only

I, II and III

were formed from metamorphic fluids

originated in molten granite-like bodies

were formed from alluvial deposits

generally have surface expression

are not discoverable through chemical tests

A gold-quartz vein system originating in magnetic fluids

A gold-quartz vein system originating in metamorphic fluids

A gold deposit that is mixed with granite

A gold deposit that has shed alluvial gold

A gold deposit that exhibits chemical halos