Geology Reference
In-Depth Information
7 10'
o
7 30'E
o
50 30'
o
5a
1
10
2
28
N
5
3
32
31
27
4
30
Burgbrohl
11
26
12
39
33
15
16
35
14
13
40
42
18
48
Anderngch
34
17
41
71
Laacher
See
25
Neuwied
47
37
38
6
19 20
Kempe
n
ich
46
36
49
64
72
45
21
22
23
70
51
52
43
35a
69
50
o
50 23'
9
24
44
68
Rieden
63
53
54
6
5
56
57
58 59
60
29
Mendig
55
7
66
61
62
67
Nor
th S
e
a
0
123
km
8
Mayen
msterdam
B
on
n
alkali basalt (Miocene)
(Melilite) nephelinite
leucite tephrite
approximate boundaries of
phonolitic pyroclastics
and calderas
fold axis and dip of axis
Quaternary volcanics
phlogopite-leucite basanite
thrust
cleavage fan
(sodalite, leucite) phonolite
normal faults bounding
Neuwied tectonic basin
Fig. 4.18 The Quaternary volcanic
fields of East Eifel (after Duda and Schminke 1978)
4.7.2 Spotted Fawn Creek, Yukon
In the west central part of Yukon pseudoleucite-bearing tinguaites have been
described by Templeman-Kluit (1969) from Spotted Fawn Creek (64
°
22
′
N, 133
°
40
W). These rocks are metaluminous having K
2
O/Na
2
O = 3.1 and K
2
O/
Al
2
O
3
= 0.7.
′
4.8 The K-Rich Silica
Poor Lavas of Europe
-
4.8.1 Ultrapotassic Rocks of Germany
The Quaternary volcanic
fields of Eifel (Duda and Schminke 1978) are located west
of Rhine River and north of Mosel River (Fig.
4.18
). According to Worner et al.
(1987, also see Worner and Schminke 1984) and Ziegler (1992) there are two
volcanic
fields in this region:
Search WWH ::
Custom Search