黏土（Q 4 3al-m ）：灰黄~青灰色，湿，可塑~软塑，含氧化铁斑

Clay (Q 4 3al-m): ~ sallow gray, wet, ~ plastic soft plastic, iron oxide-containing spots and stripes gray kaolin, local <br>unit silty clay, oil sheen smooth cut, dry strength, high toughness, no shaking reaction. Layer top elevation 0.47 ~ -0.66m, thickness of <br>1.20 ~ 2.70m. They are distributed within the venue.

Clay (Q 4 3al-m): gray ish-yellow-green-grey, wet, plastic-soft-plastic, with iron oxide spots and gray-white kaolin stripes, Bureau<br>Part of powder clay, the cut surface smooth and grease gloss, dry strength, high toughness, no vibration reaction. Layer top height 0.47 to -0.66m, layer thickness<br>1.20 to 2.70m. The site is distributed.

Clay (Q 43al-m): grayish yellow to greenish gray, wet, plastic to soft plastic, containing iron oxide spots and grayish white kaolin stripes, local<br>It is composed of silty clay with smooth and greasy section, high dry strength and toughness and no shaking response. The top elevation of the layer is 0.47 ~ -0.66m, and the layer thickness is<br>1.20~2.70m。 It is distributed in the site.