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Paper Number: 184
Problems
of intrusive magmatism in Saur region of Eastern Kazakhstan
Karavaeva,
G.S.1, Navozov, O.V.1, Solyanik, V.P.1,
Jes, E.N.1
1 LLP "GEC "Topaz", Republic of Kazakhstan, Ust-Kamenogorsk.
info@topazgeo.kz
___________________________________________________________________________
Saur region tectonically located in two structures of Zharma-Saur
structural formational zone – in North Saur unit and Voronzov-South-Saur
subzone. There are 4 complexes in Saur region [1, 2]:
1. Saur gabbro-granodiorite-tonalite complex (C1).
Formation of the complex took place in 4 phases: Ι - gabbro-diorites; ΙΙ
- granodiorites; ΙΙΙ - tonalites; ΙV - dikes. The complex contains
granite-porphyries, tonalite-porphyries, diorite porphyries, diabase
porphyries.
2. Intrusive formation of kensayskaya volcano-plutonic association
(C2-3) confined to the volcanics and intrusions of
kensayskaya suite. Formation took place in 2 phases: Ι - diorites,
gabbrodiorites, microdiorites, monzodiorites; ΙΙ - dacite and
trahidatsite porphyries.
3. Manraksky granite-granosyenite complex (C3): Ι –
granites, adamellites, granosyenites; ΙΙ - dike phase - granosyenite
porphyries.
4. Lower-Middle Permian gabbro-diabase complex (P1-2): Ι –
microgabbro, gabbrodiabases; ΙΙ - dike - basaltic porphyries,
diabases.
Copper-porphyry type deposits of gold-molybdenum-copper ore formation
associated with the Saur (C1) and at least the Kenyan
(C2-3) complex. Basalt-andesite clastic formation
(C1t1-v1) is enclosing and includes
lava, breccias of lava, basaltic andesites, basalts interbedded with
sandstones and siltstones.
Saur region has been poorly explored geologically. It is needed to
solve a number of questions for argumentative and correct
characteristics of intrusive complexes and their metallogenic
features:
1. Refine the age of allocated intrusive complexes using the latest
methods of isotopic analysis.
2. Determine the size of each of the complex, especially, of saur one
and kensayskiy one, and establish the validity of the designation of a
massif to a specific complex.
3. Study the relationship between dike-vein zones and separate
massifs, and between each other and the host stratigraphic units, which
age is paleontological justified. Determine the affiliation of dyke
formations to one or another complex.
4. Refine genetic connections of ore mineralization with magmatic
complexes. [3]
References:
[1] Navozov O.V., Karavaeva G.S. (2012) Report on the results of work
on the program «Making a legend of Gosgeolkarta-200 Zaysanskaya series’
sheets on the results of Geological Additional Area Exploration-200».
Kazakhstan, Ust-Kamenogorsk, LLP "GEC "Topaz": 57
[2] Sherba G.N., D'yachkov B.A., Stuchevskij N.I. (1998) Big Altai.
Volume 1. Geological structure: 21
[3] Solyanik V.P., Navozov O.V., Karavaeva G.S. (2012) Report on the
results of geological and mineragenous mapping of Saur area 1: 200 000
scale. Kazakhstan, Ust-Kamenogorsk, LLP "GEC "Topaz": 84
