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 S2. Hardwick Site: HWK 2 Trench Unit Descriptions

Depth (cm)	Unit Name	Description*	Notes
0–29	Ah	10YR3/1 (very dark gray), silt loam, slightly firm; soil—weak very coarse blocky structure breaking to a strongly developed fine to very fine nutty structure, abrupt smooth boundary
29–76	Bwg	2.5Y6/3 (light brownish gray) and 5/2 (grayish brown) with many coarse distinct 7.5YR5/6 (strong brown) mottles and a few medium distinct 10YR 2/1 (black) mottles, very fine sand, very friable; sediment—massive, clear wavy boundary
76–81	2bA	2.5Y6/1 (gray) and 10YR5/3 (brown), silt, hackled appearance, friable; sediment—massive, abundant microfine root voids, clear wavy boundary
81–91	3bC(f)	10YR5/6 (yellowish brown; 50%), 5YR3/4 (dark reddish brown, 40%), 2.5Y6/1 (gray, 10%), fine sand, massive, very weakly cemented sharp smooth boundary
91–100	4bC	2.5Y5/1 (gray), very fine sand and silt laminae (centimeter-scale); soil—massive, slightly firm, soft abrupt wavy boundary
100–153	5C	2.5Y4/2 (dark grayish brown), fine sand, massive to single grain, half lower part with horizontal laminae of 10YR 5/4 (yellowish brown) fine sand, sharp wavy boundary
153–185+	6Cr	N5 (gray), (reduced) strongly thixotropic laminae of silt and very fine sand, lower half has raupo/rush roots in place	Water table at 185 cm

*Soil description at vertical line 6. This trench was not logged.

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