Investor Presentaiton
Origin and alteration of platinum group minerals in chromite deposits of the Ulan-Sar'dag
ophiolite
Olga Kiseleva¹, Evgeniya Airiyants¹, Dmitriy Belyanin¹,2, Sergey Zhmodik¹,2
1 Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russian Federation
0
300 км
F
Russia
2-Novosibirsk State University, Novosibirsk, Russian Federation
Republic of
Buryatia
N
Ulan-Sar'dag
massive
Northern branch
Irkutsk Region
Ulan-Sar'dag
Republic
Irkutsk
of Tuva
Baikal lake
Ulan-Ude
Trans-Baikal
Territory
Southern branch
Mongolla
The geographical position of the Ulan-Saridag massif
China
+
The Ulan-Sar'dag ophiolite massive is tectonic sheet. It is part of
ophiolite complexes of Eastern Sayan and fold-thrust region of Central-
Asian Fold Belt. The massive is part of the Dunzhugur Island Arc of
Paleosian Ocean in Riphean-Vend Age. The ophiolite complex consists of
the northern and southern branches, which may have been formed in
different geodynamic settings. The Ulan-Sar'dag ophiolite is located ab.
between these structural branches. We received some interesting new data
chemical composition of chrom-spinelides and platinum mineralization
for this massive.
Alluvium and glacial deposit
Carbonaceous with volcanics formation (O-S)
Volcano-sidemintary-carbonaceous (O-S)
a) tholeiite-basalt-carbonaceous
b) tuff-shale-carbonaceous
c) conglomerates
Dolomite-limestone phosphate-bearing formation
Carbonaceous formation (O-S)
Dolomite formation (D-C)
888888888
10 km
HAHHA
+ +
+
+
+ Plagio-gneiss-granite Gargan block
(Tuva-Mongolian microcontinent) (Ar)
Graywacke-sandstone-shale (V-Pr) ++
Sandstone-shale-
carbonaceous-flishoid formation
a)
b)
Limestone-dolomite (Pr-V)
x
Х
Olistostrome-carbonaceous-
terrigenous formation
Ophiolite formation:
a b
C
L
a) ultrabasite; b) melange;
c) gabbro
Gneiss-migmatite formation
Granite formation
a) syenite-granosyenite
b) diorite-plagiogranite
a)
b) k
a) granites
k
b) basites
Faults
Geological schematic map of the south-eastern part of the Eastern SayanView entire presentation