Shi-Yong Yu

5 Questions 11 Answers 0 Followers

Questions related from Shi-Yong Yu

How to determine the radiocarbon reservoir age?

Suppose there is a lake receiving DIC only from the atmosphere. Thus the radiocarbon reservoir age is zero. Also suppose we have two samples from this lake: one is terregenic leaves with a 14C...

30 July 2016 8,395 5 View

Can you help me identify this gastropod shell?

Samples were collected last year from a clayey layer of the historical (AD 1935) flooding sediments of the lower yellow river in central china. Attached are the pictures. Thanks in advance.

16 January 2015 9,341 2 View

Entering the ice age - does tectonism really matter?

We have a well accepted theory to explain the glacial-interglacial cycles during the Quaternary Ice Age. My question is, why did the Earth enter the ice age gradually?

15 February 2014 760 4 View

Why did civilization emerge only during the early Holocene?

Climate and civilization

09 October 2012 5,108 35 View

Is it possible to use the 13C of fossil C4 plants to reconstruct the 13C of atmosperhic CO2?

Ice core works well, but the resolution is low.

24 September 2012 8,990 1 View