Hortensius Milichius T. Mayer volcanic domes field
Hortensius Milichius domes (termed Hortensius 1-11 and Milichius 1-24)
By Mike Wirths
By Paolo Lazzarotti
By Mike Wirths
by Mike Wirths
by Mike Wirths
by Mike Wirths
by Jim Phillips
by Carmelo Zannelli
by Raffaele Barzacchi
by Jim Phillips
by Raffaello Lena
by Raffaello Lena
by Mike Wirths
by Guy Heinen
by KC Pau (dome M24)
Dome
|
longitude [°]
|
latitude [°]
|
slope [°]
|
D [km]
|
h [m]
|
Milichius 1
|
-31.58
|
12.76
|
0.86± 0.1
|
13.4± 0.5
|
100± 10
|
Milichius 2
|
-30.05
|
12.79
|
1.80± 0.1
|
20.1± 0.5
|
320± 30
|
Milichius 3
|
-30.43
|
13.78
|
1.40± 0.1
|
15.6± 0.5
|
190± 20
|
Milichius 4
|
-27.39
|
12.04
|
1.27± 0.1
|
15.3± 0.5
|
170± 15
|
Milichius 5
|
-31.01
|
13.24
|
0.60± 0.1
|
15.3± 0.5
|
80± 10
|
Milichius 6
|
-32.74
|
11.48
|
1.34± 0.1
|
19.7± 0.5
|
230± 20
|
Milichius 7
|
-30.96
|
13.75
|
0.99± 0.1
|
5.2± 0.5
|
45± 5
|
Milichius 8
|
-29.50
|
14.06
|
3.46± 0.3
|
4.3± 0.5
|
130± 10
|
Milichius 9
|
-29.40
|
13.98
|
3.15± 0.3
|
4.0± 0.5
|
110± 10
|
Milichius 10
|
-31.70
|
14.06
|
0.84± 0.1
|
19.0± 0.5
|
140± 15
|
Milichius 11
|
-31.08
|
14.77
|
2.80± 0.3
|
6.0± 0.5
|
150± 15
|
Milichius 12
|
-31.20
|
10.08
|
2.72± 0.2
|
9.7± 0.5
|
230± 20
|
Milichius 13
|
-31.53
|
11.68
|
0.41± 0.1
|
27.8± 0.5
|
100± 10
|
Milichius 14
|
-32.13
|
12.76
|
0.27± 0.1
|
14.8± 0.5
|
35± 5
|
Milichius 15
|
-25.40
|
10.10
|
0.60± 0.1
|
21.0± 0.5
|
110± 10
|
Milichius 16
|
-32.41
|
12.85
|
1.14± 0.1
|
5.0± 0.5
|
50± 5
|
Milichius 17
|
-32.58
|
13.02
|
0.93± 0.1
|
11.0± 0.5
|
90± 10
|
Milichius 18
|
-32.02
|
10.60
|
0.84± 0.1
|
12.3± 0.5
|
90± 10
|
Milichius 19
|
-26.11
|
13.64
|
1.03±
0.1
|
10.0±
0.5
|
90±
10
|
Milichius
20
|
-26.95
|
13.62
|
0.60±
0.1
|
9.5±
0.5
|
50±
5
|
Milichius
21
|
-29.24
|
13.78
|
1.70±
0.1
|
5.75±0.5
|
85±10
|
Milichius
22
|
-30.36
|
18.94
|
0.60±
0.1
|
20x25±
0.5
|
130±15
|
Milichius
23
|
-29.95
|
15.65
|
4.70±
0.5
|
5.5±
0.5
|
230±20
|
Milichius
24
|
-32.55
|
19.17
|
0.6.±
0.1
|
18.0±
0.5
|
95±10
|
Hortensius
1
|
-28.41
|
7.18
|
1.89±
0.1
|
8.5
± 0.5
|
140±15
|
Hortensius
2
|
-28.01
|
7.12
|
3.45±
0.3
|
7.6
± 0.5
|
230±20
|
Hortensius
3
|
-27.78
|
7.59
|
2.05±
0.2
|
12.3
± 0.5
|
220±20
|
Hortensius
4
|
-27.51
|
7.47
|
3.21±
0.3
|
6.8
± 0.5
|
190±10
|
Hortensius
5
|
-27.54
|
7.87
|
5.39±
0.5
|
8.5
± 0.5
|
400±40
|
Hortensius
6
|
-27.34
|
7.82
|
3.57±
0.3
|
12.5
± 0.5
|
390±40
|
Hortensius
7
|
-25.17
|
6.07
|
1.12±
0.1
|
7.8
± 0.3
|
80±10
|
Hortensius
8
|
-27.86
|
5.38
|
1.18±
0.1
|
6.0± 0.5
|
65±10
|
Hortensius
9
|
-27.88
|
5.62
|
3.33±
0.3
|
3.3± 0.5
|
97±10
|
Hortensius
10
|
-27.74
|
5.00
|
1.98±
0.2
|
8.2± 0.5
|
142±10
|
Hortensius
11
|
-26.87°
|
6.88
|
0.83± 0.1
|
8.3± 0.5
|
60±10
|
Two dome fields are situated in eastern Oceanus
Procellarum near the craters Hortensius, Milichius, and Tobias Mayer, in a
region located south of the outer rim of the Imbrium basin also known as Mare
Insularum. In this wide volcanic region, domes of moderate to steep slope are
located. They are all part of a low to moderate-TiO2 basaltic
lavas. According to classification scheme, M1, M2, M3, M5, M6, M10 and M15
belong to class C1. Their low slopes suggest high effusion rates of
the erupted lavas. With their smaller diameters and steeper slopes, domes M4,
M11, and M12 (Milichius π) belong to class B1. The dome M7 is morphometrically similar to
the small, shallow, low-volume class A domes of the Cauchy and Arago dome
fields but consists of spectrally red material, belonging to class E2.
The domes M8 and M9 with slopes corresponding to 3.2°-3.5° belong to class E1.
M13, with its large diameter and low slope of only 0.41° is considered a
putative intrusive dome and belong to class In1.The dome Hortensius
7 (H7) is located near the crater Hortensius E, with a height of 80± 10m, and
belongs to class B2. The low slope and edifice volume of the dome yield a high
effusion rate of 106 m3 s-1 and a short
duration of the effusion process of only 0.72 years. Dome H1, like H7, with its
shallower slope and lower volume belongs to class B2. Domes H2-H6
belong to class B1 according to their steep slopes (comprised
from 2.1° and 5.4°).
M16 belongs to class E2 as M7, while the domes
M17 and M18 belong to class C1. The domes H8 and H9 with slopes
corresponding to 1.18° and 3.33° belong to class E2 and E1 respectively,
while the dome H10 belongs to class C2. H11 belongs to class C1 with a tendency
to class C2 due to smaller diameter and
edifice volume. The dome M20, like M17 and M18, is a typical mare domes
belongs to class C1, while the dome M19 belongs to class C1 with
a tendency towards class C2. The dome M21 belongs to class E1 with
a tendency towards class E2 .
The dome M22 is a swell and M23 belongs to class
B1. The dome M24 belongs to
class C2.
