Vietnam Journal of Earth Sciences, 40(2), 208-219, Doi

tải về 1.3 Mb.

Chế độ xem pdf

trang	3/3
Chuyển đổi dữ liệu	09.04.2024
Kích	1.3 Mb.
	#57141

1 2 3

03. Nguyen Thi Lien (1)
dong 1998, tom-tat-kich-ban-bien-doi-khi-hau, LuaChonGiaiPhap, 3959-Article Text-15360-2-10-20110905, Đa dạng sinh học biển Việt Nam - Hiện trạng, các đe dọa và vấn đề quản lý 1520457, 68544-Article Text-174028-1-10-20220705

Figure 1.

2. Study area
Pb-Zn Cho Diendeposit is located in the
Cho Don district, BacKan province, about
36 km northwest from Bac Kan town
(Fig-
ure 1).
The study area has a heterogeneous
terrain, the lowest is 220-250 m, the high-
est is 1004.67 m (Lung Le peak). There are
limestone mountain ranges from 750 to
960 m (including PhiaKhao peak 933 m
high).
The Pb-Zn deposit is mainly distributed
in the terrigenous-carbonate sediment Phia
Phuong of Devonian formation, which con-
sists of shale, bituminous black argillite, li-
mestone and marble, cropping out in
PhiaKhao anticlinal structure. Pb-Zn mines
are mainly distributed in the wing of
PhiaKhao anticlinal along the northwes-
tern-southeastern fault system, typical
mines such as, PhiaKhao, Lung Hoai, Ban
Thi,
Bo Luong and Deo An (Figure 2). Some

Vietnam Journal of Earth Sciences, 40(2), 208-219
210
photos of oxidized ore mining in the Cho
Dien deposit showed figure 3 (Figure 3)
In
the study area, the presence of northeast-
southwest faults is favorable condition for
Pb-Zn ore concentrates. Orebodies have
complex shapes; mainly ore veins which fill
in the fauls and broken zones. The upper
part of the orebodies had been completely
oxidized and transformed to oxide ores.
Sulfide Pb-Zn ore is only found in the lower
part of the orebodies (Tran Tuan Anh,
2010).
Figure 1. Location of study area
0
101.759998
0
23
.8
34
94
3
101.759998
0
19
.1
69
37
9
0
108.473670
0
19
.1
69
37
9
108.473670
0
23
.8
34
94
3
0
0
Re
d r
ive
r
Da
riv
er
CHINA
LAOS

tải về 1.3 Mb.

Chia sẻ với bạn bè của bạn:

1 2 3