Americas Gold Work sheet
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School
Cochise County Community College District *
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Course
101
Subject
Geology
Date
Jan 9, 2024
Type
docx
Pages
2
Uploaded by adamsdr19
Cochise Community College
Name: _________________
Geology 101
Instructor: J. Deakin
America’s Gold
1.
How many tons of gold have been found worldwide?
160,000
2.
Where are gold atoms created?
In outerspace during a supernova explosion
3.
Why is gold so valuable?
It can be recycled
4.
Where is the largest amount of gold found? (5 places worldwide)
Australia, China,South Africa, Peru and Western U.S.
5.
What kind of sediment is gold found in? Limestone
6.
Where does gold accumulate in rivers? Inside river bends
7.
Where do gold miners look to find gold? Heavy black soils
8.
In South Africa, at Whitwaters Rand, how far below the surface are the deposits located? 2 miles
down the deepest shaft
9.
Old timers looked for what kind of white rock? Quartz
10.
Why does white Quartz have gold in it?
Hot fluid got in the cracks and it cooled
11.
How does subduction aide in the formation of gold?
Hot fluid occurs then cools down
12.
What is the proof that geologists find, that tells them subduction had really occurred?
Ancient fluid bubbles and parallel beds of broken rocks
13.
Why are Nevada’s gold veins chaotically distributed?
Due to platectetonics
14.
What formed the strange rocks at the Midas Mine?a hot springs
15.
In 1961 a new type of gold deposit is found. This gold is found in veins of mud and quartz and cannot
be seen because it is __invisible__________.
16.
How many tons of rock do they need to mine at the Betsey Post Pit to obtain 1 ounce of gold?10 tons
17.
What ate away at the Lehman Cave limestone to cause the spongy structure?
Acidic gold fluid
18.
Where is Hodges looking for gold in the sand gravel and mud deposits Nevada?
Groundwater
19.
What type of instrument does Hodges use to find the deep crack 50 feet below the surface?
gravitometer
20.
What is the one thing that the Gold deposits in California, at the Betsy Post mine and beneath the
surface in the gravel and mud deposits have in common with each other?
Very gold rich deposits
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