. 1. deep . a) cleavage
2. cool ) shallow
3. slowly ) low-grade
4. vast r) non-foliated
5. extrusive ) rapidly
6. like e) unlike
7. high-grade ) intrusive
8. common ) deficiency
9. excess ) small
10. foliated ) heat
) uncommon
Unit 5_____________________________________________ 131
32. )
.
: The equipment used is... ...
1. New sources of fuel described included....
2. Modern colliery visited used....
3. Economic achievements written about are....
4. Average coal output of the quarry designed will reach....
6) . -. -ed:
l.The prospecting party provided with new equipment planned to begin its work in spring.
2. The prospecting party provided new data on useful minerals
discovered in the region.
. prospecting party is provided with new equipment. 4. The rocks described represented the oldest portion of the Earth's crust.
33. ,
:
1. Scientists and engineers... computers in their work. Computers... in different fields of science and engineering, (to apply)
1. Materials for sedimentary rocks... fragments of pre-existing rocks. Conglomerate, sandstone and shale... into the group of sedimentary rocks, (to include)
3. Geophysicists... the changes which take place deep in the
Earth. Many of these changes develop at such a slow rate that they...
only with the help of modern instruments and computers, (to
observe)
4. Water greatly... the decomposition of rocks. It is quite obvious
that weathering... by the action of water, (to facilitate)
34. ,
. :
1. The term "prospecting" includes the whole range of geological work directed to discovering deposits of valuable minerals. The Moscow Mining Academy directed the activities of the Academy's research institutions.
______________________________________________ Unit 5
2. Limestones occupied vast areas of the Earth's surface. It is
quite obvious that the regions occupied by limestones have been
covered by seas.
3. Modern deposits of Kamchatka volcanoes investigated by
Russian geologists show that volcanism is active there. The Institute
of Volcanology of the Siberian Department of the Academy of
Sciences investigated friable () volcanic deposits of
Kamchatka.
4. The clayey mass obtained by the decomposition of orthoclase
is white and is called kaolin. Chemists obtained phosphorus from
phosphorite.
35. ,
.
1: The mining method used depends on many factors. - .
|
|
|
1. The problems discussed are connected with the investigations
of the Earth's crust depths.
2. Metamorphic rocks described represent the oldest part of the
Earth's crust.
3. The process of metamorphism mentioned above creates such
minerals as tremolite, sillimanite and others which are uncommon
in sedimentary and igneous rocks.
4. In all the mines visited automated computerised control sys
tems were used.
5. A new system of planning employed gives an opportunity of
supplying correct information quickly which is essential for man
agement control of modern mines.
2: When burnt, coal produced heat. -> .
1. If disturbed, rocks cleave easily into separate plates.
2. When needed the additional experiments are carried out.
3. When subjected to pressure, heat and chemically active fluids,
various rpcks in the Earth's crust are transformed into metamor-
phic rocks.
36.
.
37. , :
