Electronic Supplement to
Liquefaction Features Produced by the 2010–2011 Canterbury Earthquake Sequence in Southwest Christchurch, New Zealand, and Preliminary Assessment of Paleoliquefaction Features

by P. Villamor, P. Almond, M. P. Tuttle, M. Giona-Bucci, R. M. Langridge, K. Clark, W. Ries, S. H. Bastin, A. Eger, M. Vandergoes, M. C. Quigley, P. Barker, F. Martin, and J. Howarth

Table S11. Sand-Blow and Dike-Size Data

Feature ID Type of Feature Trench Location (Vertical Grid Line) (m) Width (mm)* Minimum Width (mm) Maximum Width (mm) Height/Thickness (Maximum Height) (mm) Observations
1 Recent sand blow (L1)/Dike?? HWK 6W 7.2 Does not reach the surface at this location but does along strike. Irregular shape between a dike and a sand blow
8 Recent sand blow (L1) HWK 6W 20.5 2.1 100 Along same fissure as sand blow 20
18 Recent sand blow (L1) HWK 6E 18 1.1 50 Grain-size sample T6-GS4
20 Recent sand blow (L1) HWK 6E 22.8 0.5 100 Along same fissure as sand blow 8
21 Recent sand blow (L1) HWK 5W 3.5 3.9 130 Same fissure as sand blow 24
24 Recent sand blow (L1) HWK 5E 3.5 3.4 200 Same fissure as sand blow 21
31 Recent sand blow (L1) HWK 3W 1.3 4 240 Trench does not expose the entire sand blow width; real measure is 3+
36 Recent sand blow (L1) HWK 3E 0.75 5 350 Trench does not expose the entire sand blow width; real measure is 4.4+
38 Recent sand blow (L1) HWK 1W 2.5 2.8 180 Width measure with log and photos (only logged 2 m)
41 Recent sand blow (L1) MAR 1NE 4 11 200 Whole width was not exposed; from aerial photo, it could be up to 15 m
43 Recent sand blow (L1) MAR 1SW 4.5 8 200
44 Recent sand blow (L1) MAR 3W 0.5 4 200
16 Paleosand blow (L2) HWK 6E 13 1.5 300 Sand blow is eroded on the top so height is minimum; the preserved sand blow was probably the injection of the sand into tree roots
4 Dike (L1) HWK 6W 13.5 20 20 60 This is also dike 11 on opposite wall
6 Dike (L1) HWK 6W 13.9 80 0 100
7 Dike (L1) HWK 6W 15.1 20 0 60
9 Dike (L1) HWK 6W 20.5 20 0 30
10 Dike (L1) HWK 6E 12.5 5 7 8 Could be same as dike 11, but they do not connect in this cross section; this is also dike 4 on opposite wall
11 Dike (L1) HWK 6E 12.7 3 2 5 Could be same as dike 10, but they do not connect in this cross section; is injected in same location as paleodike 12
17 Dike (L1) HWK 6E 17.7 3.5 3 5 Grain-size sample T6-GS3
19 Dike (L1) HWK 6E 22.4 4 4 45
22 Dike (L1) HWK 5W 4.9 6 2 25
23 Dike (L1) HWK 5W 3.3 20 2 40 Grain-size samples HWK 5_GS1 to GS8; this is dike 25 on opposite wall
25 Dike (L1) HWK 5E 3.25 20 10 30 This is dike 23 on opposite wall
26 Dike (L1) HWK 4bW 2.5 150 0 300 Extends from vertical 1 to vertical 6. At 2.5, splays into two: the upper one injects into the blister (strike and dip on the upper one)
29 Dike (L1) HWK 4bE 4.5 80 60 140 No log (information from field and photographs); dike from blister to surface
30 Dike (L1) HWK 3W 1 30 20 70 Strike not measured in the field and hard to assign to a lineament on aerial photo
32 Dike (L1) HWK 3E 0.3 70 80 100
33 Dike (L1) HWK 3E 1.3 80 70 90
34 Dike (L1) HWK 3E 1.6 50 10 60
37 Dike (L1) HWK 1W 2.4 20 10 50
39 Dike (L1) MAR 1E 4.4 20 10 25
40 Dike (L1) MAR 1NE 4 5 0 10
42 Dike (L1) MAR 1SW 4.2 6 0 8
45 Dike (L1) MAR 3W 1.1 10 0 100
46 Dike (L1) MAR 3W 1 to −1.2 30 0 40 On horizontal line 0.4
47 Dike (L1) MAR 3W 0a–0.75 30 10 60
48 Dike (L1) MAR 3W −0.8 10 10 20
49 Dike (L1) (MAR 3W-)MAR 3N 0 50 0 100
58 Dike (L1) MAR 3E 1.15 5 0 10 Same as 45
61 Dike (L1) MAR 4E 2.1 10 0 20
59 Dike (L1) –fault MAR 4E 2.3 40 10 70
60 Dike (L1) –fault MAR 4E 2.6 15 10 20
60a Dike (L1) –fault MAR 4E 2.6 20 0 30
60b Dike (L1) –fault MAR 4E 2.65 10 0 10
60d Dike (L1)–fault MAR 4E 2.65 10 0 10 Splays into two
60c Fault MAR 4E 2.7
35 Dike (L1)–sill HWK 3E 0.75 180 150 240
62 Dike (L1)–sill MAR 4E 2 5 5 10 From subvertical (59) to parallel to silt layer
27 Blister HWK 4bE 4.5 3 0 150 Same as 28; the mound on the ground is 4.5 m wide and 100 mm high
28 Blister HWK 4bW 4.5 ? 0 240 Same as 27; no log (information from field and photo)
63 Blister MAR 4E 3 200 150 250 Mound is 3 m wide and 25 cm high; associated with 64; dike becomes subhorizontal into the blister
64 Blister MAR 4E 2.1 120 20 200 Mound is 3 m wide and 25 cm high; associated with 64; dike becomes subhorizontal into the blister
2 Paleodike (L2) HWK 6W 10.6 70 0 100 Dike stops within unit 31
3 Paleodike (L2) HWK 6W 10.9 40 0 800 Dike stops at top unit 31
5 Paleodike (L2) HWK 6W 13 100 10 600 This dike is also dike 12 on opposite wall
12 Paleodike (L2) HWK 6E 12.7 10 Is injected in same location as dike 11; this dike is also dike 5 on opposite wall
13 Paleodike (L2) HWK 6E 13.05 8 5 13
14 Paleodike (L2) HWK 6E 13.08 3 3 3
15 Paleodike (L2) HWK 6E 13.18 30 20 50
50 Paleodike (L2) (MAR 3W-)MAR 3N −0.25 40 0 50 Horizontal 0.75
51 Paleodike (L2) MAR 3N 0.5 25 0 40
52 Paleodike (L2) MAR 3N 0.75 15 0 30
53 Paleodike (L2) MAR 3E −0.3 10 0 30
54 Paleodike (L2) MAR 3N 0.4 10 10 20
55 Paleodike (L2) MAR 3N 0.5 40 20 40
56 Paleodike (L2) MAR 3N 0.2 20 0 40
35 Paleodike–sill (L2) MAR 3E 0.6 20 0 40

* Average for dikes (mm); blisters and sand blows (mm).

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