Geology. Козлова Е.П. - 29 стр.

       3.4 Ответьте на следующие вопросы

  1) What is prospecting?
  2) What are the three main stages of prospecting?
  3) What processes does mining geological exploration include?
  4) What does prospecting work provide?
  5) Is it enough to know only the topographical relief of a locality for exposing this
     or that mineral?
  6) How can prospecting methods be subdivided?
  7) What do direct methods include?
  8) What indirect methods do you know?


     3.5 Определите, какие предложения соответствуют содержанию
текста

  1)   The search for economically useful deposits is called proving.
  2)   The science of geology can explain the manner of occurrence of ore deposits.
  3)   As a rule prospecting work includes four stages.
  4)   The study of general topographical relief and the type of ground makes it
       possible to expose this or that deposit.
  5)   Geologists know that certain deposits are only found in a particular type of
       ground.
  6)   As is know, veins are found in metamorphic rocks.
  7)   Geochemical and botanical surveys are among the direct methods.
  8)   Gravimeter is an instrument that can detect an electrical potential of mineral.

       3.6 Заполните пропуски в предложениях, используя следующие слова

exploration, prospectors, occurrence, deposits, quantity, quality, surveying, to search,
search, geological, methods.

1) The search for primary gold ………… can be made by metallometric method of
  prospecting.
2) ………… includes drilling and driving of exploratory openings.
3) ………… for useful minerals which includes the whole range of ………… work
  directed to discovering workable deposits of valuable minerals.
4) To determine the ………… of a mineral and its ………… in relation to the
  current requirements of industry is the task of exploration.
5) ………… valuable minerals it is necessary to know their various distinctive
  features.
6) In recent year combined geophysical ………… by air has been used on a wide
  scale.
7) In the 19 th century mineral deposits were found by ………… who looked for
  visible evidence of mineralization.
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