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 S8. Marchand Site: MAR 1 Trench Unit Descriptions

Depth (cm)	Unit Name	Description*	Notes
0–23	C	2.5Y 5/3 (dry; olive), 2.5Y4/3 (moist; olive); fine sand with thin to medium laminae of silty fine sand; loose upper 10 cm; friable lower 13 cm; sharp lower boundary	Sand blow
23–45	Ah	10YR 4/2 (dark grayish brown); silt loam; moderate to fine to medium nutty structure; friable, brittle; strong fine to medium nutty structure; abrupt wavy boundary
45–70	2C(g)	2.5Y 6/3 (gray) with common medium distinct 7.5YR 5/6 (strong brown) and faint 2.5Y 6/1 (gray) mottles, loamy fine sand; very friable; clear wavy contact
70–102	3Cg	2.5Y 5/1 (gray) with common coarse tubular vertically aligned 10YR 5/6 (yellowish brown) mottles around root pores; loamy silt; 10–20-cm-size root cast pseudomorphs; abrupt smooth boundary
102–160	4Cg	2.5Y 5/1 (gray) with few coarse distinct 7.5YR 5/6 (strong brown) vertically aligned mottles; centimeter-scale alternating laminated beds of loamy very fine sand and loamy silt; 2–5-millimeter-size pieces of charcoal at boundary between loamy very fine sand and loamy silt at 139 cm depth
160–172	5Cr	10GY 4/1 silty very fine sand	Highly liquefiable?

* Soil description at vertical line 4.

[ Back ]