Geology. Козлова Е.П. - 32 стр.

vegetation and to record the metallic content of surface may prove useful in
combination with other forms of airborne mineral survey.
       A method of prospecting which is based on a combination of X–rays and
ultrasonic transmission came into use. It is used to probe the atomic structures of
minerals. This way gives much information, which gradually discovers the secrets of
Earth’s interior. One of these secrets in the ways the chemical elements are
incorporated in igneous rocks and how replacements of one element by another occur
within the mineral groups.
       Geocosmic rays are used as a means of determining the size of an or deposit in
the prospecting age stage Cosmic rays coming in from the depths of the Universe
explore nearearth and interplanetary space. The geocosmic method is based on the
fact that when the cosmic rays set into the atmosphere, the so-called secondary
cosmic rays, muons, apper. The particles are capable of penetrating rather deep into
the earth’s crust. Successful development of space research has made it possible to
survey the earth’s resources from space by satellites. The advantages of this method
are such that vast areas such as entire mountain belts and continents can be mapped
synoptically. The greatest potential of surveying the earth’s resources from space for
mineral exploration is based on the ability to map synoptically the geomorphology
and general geological environment of very large areas. The results obtained provide
more accurate and complete information than is available from conventional surveys.

    3.12 Расскажите по-английски, что нового вы узнали из текста 3B.
Какие факты были вам известны?


     3.13 Прочтите и переведите текст 3С. Обратите внимание на
следующие термины

dip – падение (залежи); уклон, откол;
strike – простирание, простираться;
overburden – покрывающие породы, верхние отложения, наносы;
trench – траншея, канава;
pit – шахта, карьер, шурф;
adit – горизонтальная подземная выработка, штольня;
crosscut – квершлаг;
borehole – скважина;
steep – крутой;
gently sloping – с небольшим наклоном.




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