PROCEEDINGS OF HIGHER EDUCATIONAL ESTABLISHMENTS
GEOLOGY AND EXPLORATION
№3/2015
Main editor’s column
L i s o v V.I. Expertise of mining-geological works in MGRI -RSGPU …………..….5
Geology
Me z h e l o v s k a y a S.V., Ko r s a k o v A.K., Me zhe lov s k i y A.D., Na r v a s A.K.
Main systems of faults of Windy Belt: succession and conditions of formation ...……8
Geological-structural investigations on the all area of Windy Belt allowed
distinguishing three systems of gentle dipping zones of faults: Kirichinskaya,
Tokshinskaya, Bulatovskaya systems and the system of steep faults of different
directions of dipping. Gently dipping zones correspond to the stages of compression of
Windy Belt with its interaction with boundary structures (Belomorsky Belt and
Karelian granite - greenstone region). The system of steep dipping faults formed in the
tension environment.
K e y w o r d s : Windy Belt, faults zones, blastomylonites, exfoliation zones, gently
dipping faults, steep faults of different directions, Kirichinskaya suite, Tokshinskaya
suite
Mineralogy, petrography, lithology
Popov A.Yu., Sobolev E.S., Yadrenkin A.V. Composition and conditions of
sedimentation of the Osipa and the Chaidakh formations (Upper Triassic) in the
Pronchishev range region (Middle Siberia) …………………………………………15
The new data on a composition of the Osipa and the Chaidakh Formations (Upper
Triassic) in the Pronchishev Range region has been obtained. Stratigraphic
subdivision of the geological succession by complex bio- and lithostratigraphic
methods was carried. By results of the carried-out (implemented, done)
litofaciesanalysis the studied deposits have been found to represent the uniform
regressive sedimentological cycle with the transgressive pack in the basis.
Consecutive change of sea–shallow sedimentation conditions by coastal is noted. The
comparative analysis of the studied geological succession with basic successions of
adjacent areas showed that its structure has the Leno-Olenek type but with
moredistinct far-coastal deposits characteristics.
K e y w o r d s: litofacies analysis; Upper Triassic; Middle Siberia.
Antoshkina A.I. Ooid-stromatolite association – a stress for benthic ecosystems …19
This study reports the occurrence of ooid-stromatolite association (0,5—9 m in
thickness) in the Lower Paleozoic sections of the Timan-northern Ural region. Wellpreserved different fabrics seen in ancient ooids and stromatolites have previously
been interpreted with respect to paleoenvironmental conditions which brought
changes in benthic ecosystems. Results from current study suggest that it is possible
that the connection of ooids with stromatolites at the time-levels depends on their
genetic relationship due to abundance of microbial inhabits during periods of shallow
water marine basin regressions. During regression in the result of further
paleolandscape differentiation of the bottom the hydrochemical and hydrodynamic
regimes of the water reservoir changed. It lead to the quiet-water environments,
expansion of microbe and bacterial associations and eutrophy of waters, calcium
balance of sea waters fall and reorganization of benthos ecosystems with dominance
of mostly euryfacial and euryhaline organisms – Ostracods, gastropods and bivalves.
Bulk carbonate values from the Wenlock limestones with ooids average -5,4...-6,4‰
for δ13C PDB and 22,9...24,6‰ for δ18O SNOW. Additionally, a low content of boron
11—30g/t in these limestones also indicates the lowered salinity of waters.
K e y w o r d s : ooid-stromatolite associations; benthos; quiet-water environments;
Lower Paleozoic.
Useful minerals, methods of their prospecting and exploration
Ignatov P.A., Chjao Hen. Nephrite placers types of Kunlun and adjacent Tarim
depression, China ……………………………………………………………………..26
Preconditions of nephrite placers formation in the Central Kunlun mountains and
adjacent Tarim depression are considered in Russian literature for the first time: the
presence of the primary deposits in metasomatic rocks localized in alpine-type
ultramafic and contact-metasomatic rocks; optimal erosional truncation and
hydrodynamic trap sites of valuable minerals accumulation; contrast neotectonics;
variable climate conditions. The types of nephrite placers have been distinguished:
deluvium (boulder stream), morainic valley deposits, proluvial, alluvial of mountain
and plain rivers, surface deltas. The examples of typical landscapes of placers are
given. Surface delta placers appeared to be modern and ancient buried. The residual
placers resources of different genetic types are poor except surface deltas placer. It is
justified that the surface deltas (delta fan) deposits in the studied region may contain
nephrite placers.
K e y w o r d s : nephrite; placer; boulder; diluvium; moraine; proluvium; alluvium;
delta fan.
Aouli E. , Belov S.V. Structure, mineralogy and geochemistry of the Amesmessa gold
ore deposit in the Algerian Sahara ……………………………………………………35
The geological structure, mineralogical and geochemical features of the Amesmessa
gold quartz-vein type ore deposit located in In-Uzzal region of Hoggar shield (the
Algerian Sahara) are described. The ore-bearing object has Proterozoic age and
belongs to the gold - quartz - low-sulfide formation. The basis of its structure and a
typical geological setting of the ore veins location are the fault paragenesis that had
arisen in a process of the development of a big fault zone during the Ebourneisky
tectonic and magmatic cycle. This object belongs to a formation typical for the
metallogenic zones of the green belts of the ancient shields and has good prospects of
accumulation of the ore resource potential.
K e y w o r d s : Hoggar; gold; In-Uzzal region; Amesmessa mineral deposit.
Hydrogeology and engineering geology
Fotiev S.M. Geocryological conditions of the Urals-Pai-Khoi mountain system …...44
Contemporary geocryological conditions of the Urals-Pai-Khoi mountain system has
been considered as a result of the repeated and significant changes of the severity of
the climatic and geocryological conditions. It has been demonstrated that during all the
cryogenic period as well as at nowadays, the formation of the rock temperature, the
thickness, the discontinuosity and the structure of the cryogenic strata obeyed and obey
the laws of latitude and altitude zoning. The given characteristics of the contemporary
cryogenic strata for the segments of Urals and Pai-Khoi illustrate clearly the
significant changes in rock temperature (from +3 to -11°C), in thickness (from 0 to
1000 m), discontinuities and structure of the cryogenic strata at the increase both in
latitude and in altitude of the area.
K e y w o r d s : cryogenic area, frozen and permafrost dry rocks, laws of latitudial
and altitudinal zonality.
Ryashchenko T.G., Tyrshih S.A., Kornilova T.A., Bryzhak E.V. Integrated engineering
geological evaluation of Proterozoic sandstones: a case study of the construction site
near the town of Udokan ……………………………………………………………..51
The article considers the results of integrated engineering geological studies of
Proterozoic sandstones at the construction site near the town of Udokan. The
«Standard Statistics» and «Cluster Analysis» programs have been applied by
processing the data on density, strength and water resistance of the soils obtained
during the research. The samples have been examined for water absorption and
longitudinal seismic wave velocity; the structural and textural characteristics of rocks
in petrographic thin sections have been studied for the first time. On the basis of
complex data, conclusions about the strength factors of the studied objects have been
drawn out.
Key
w o r d s : sandstone, density, strength, water absorption, seismic wave
velocity, structure texture.
Geophysical methods of prospecting and exploration
Antonov Yu.V., Rybin A.K., Matiukov V.E.
Comparison of frequency and
morphological characteristics variations of gravity and magnetotelluric fields …….59
The joint change variations of magnetotelluric field of the Earth and un-tidal
variations of gravity, registered on the territory of Bishkek Geodynamic Polygon, are
considered. There is a clear relationship of these variations. Obviously, a joint
analysis of the variations of magnetotelluric field and gravity gives a new possibility
to study the deep structure and dynamics of geo-medium.
K e y w o r d s: magnetotelluric field; un-tidal variations of gravity; Bishkek
Geodynamic Polygon.
Geological exploration technique
Brukhovetsky O.S., Ganin I.P., Naidenko I.Yu. The justification of the slotted drains
usefulness ……………………………………………………………………………..64
In connection with the solution of actual environmental problems of limiting the
migration of hazardous contaminants in groundwater aquifers, the appropriateness of
vertical slot drains instead of wells is considered. Migration of contaminants is limited
by the construction of interceptor drains and pumping through them the underground
water passing through the contaminated area of the aquifer. Intercepting drainage
system is proposed to be constructed with use of technical means for downhole jetting.
The technology of their application is briefly considered. With the use of computing
mathematics, the effect of increasing the number of wells in a line of fixed length
(density of line) on the hydraulic resistance of linear drainage wells is studied. The
extreme convergence of wells is proposed to be replaced by the slot drain, constructed
using the means of downhole jetting.
Key
w o r d s : vertical wells and slotted drains; technical means of downhole
jetting; migration of hazardous contaminants; calculation of drainage; filtration
resistance.
Yanitsky E.B., Dunayev V.A.
The optimal number of experimental wells for
substantiation of slime sampling methods in open-pit mining of mineral resources ...69
Following the results of authors experimental works on Kovdorsky apatite-shtaffelite
deposit and taking into account the results of similar works performed by other
researchers on ore deposits of various genetic and industrial types, it has been
established that for justification of sampling method of slime of drilling-and-blasting
wells at open-cast mining of any ore deposits the five experimental wells for each type
of a loop of slime (cone-shaped or extended along the «boring machine — mouth of a
well» line) are enough.
K e y w o r d s: ore deposits; pit; a loop of slime; sampling; justification of method;
quantity of experimental wells.
Mineral and Geological Exploration Economics
Borisovich V.T., Gaganov S.Yu. Investment entity of gold as a basis for efficiency
gold mining ………………………………………………………………………….73
In the modern economic conditions, gold is a unique investment instrument because
of characteristics, such as the credit riskless and high liquidity, which is particularly
important in times of economic and geopolitical tensions. The modern function of
gold as object of investment, and also classical and modern instruments for
investments into precious metal are considered: bars, coins, derivatives, warrants,
unallocated accounts, depository receipts, E-gold, Exchange Traded Funds.
K e y w o r d s : gold market; gold demand; gold supply; market condition of gold;
Exchange Traded Funds; futures; options; swap; shares; depository receipts; bars;
coins.
Kazantseva S. Yu. Use of marketing instruments in the recruiting of mineral complex
enterprises …………………………………………………………………………79
This article discusses the relationship of marketing and recruitment, the process of
attracting new staff, the scheme 4P in terms of personnel policy, and the main aspects
of creating the image of organizations. The ratings of Russian employers are
investigated and analyzed, the technology of management of the enterprise with the
use of marketing tools, examples of successful companies in this field of work, staff
loyalty as a factor of effective development of the company are investigated.
Key
w o r d s : recruiting; personnel marketing; company image; morale;
recruitment and retention of staff.
Brief reports
Serova A.A., Spiridonov E.M.
Baddeleyite in pneumatholytic aureoles above the
sulfide droplets in picrate gabbrodolerites, plagiolherzolites and troctolites of ore
intrusives of norilsk type ……………………………………………………………..83
Baddeleyite has been found in disseminated sulfide ores of the Noril’sk ore field
within the pneumatholytic aureoles presented above the sulfide droplets. The
baddeleyite occurs as lamellae within ilmenite crystals. It contains ≈ 1 wt.% HfO2.
This new occurrence of baddeleyite and the pneumatholytic aureole mineral
assemblage indicates that fluids exsolved from highly fractionated sulfide melts were
enriched in K, P, Ti, but also contained Zr, REE and Cl, F, H2O, SO3. The mineral
assemblage of the pneumatholytic aureoles is estimated to form at temperatures around
780—820°C based on the titanomagnetite-ilmenite geothermometry.
K e y w o r d s : baddeleyite, ilmenite, Norilsk ore field.
Chronics
Turov A.V., Komarov V.N. About the first scientific research geological laboratory
of MGRI-RSGPU in Republic of Crimea …………………………………………...86