Quaternary Freshwater lake trace fossil

[GeniusKevin]

I went to a construction site near a big lake (Dian lake 滇池) at Kunming, China (Although this city is famous for Cambrian fossil)

 

This place is going to construct some apartments.

A lot of workers pass by without realizing they are trace fossil.

 

it's geological map is:

from https://www.osgeo.cn/map/m02db

 

the location is around:

from IOS's map

 

So it suppose be from Quaternary, right? (but I am not sure if lake trace fossil can produce trace fossil like below)

 

And I found some trace fossil:

and some other stuff i am not so sure:

 

and last picture is ripple mark

 

If it is from the lake, that would be a nice vacation place in summer!

 

 

 

 

 

 

Edited January 18, 2020 by GeniusKevin
change picture sequence