4. Sedimentology and Stratigraphy
Diagenesis — Quiz
Test your understanding of diagenesis with 5 practice questions.
Practice Questions
Question 1
How does an elevated pore pressure relative to overburden pressure affect mechanical compaction during diagenesis?
Question 2
At a geothermal gradient of 30 °C/km and a surface temperature of 15 °C, what is the approximate diagenetic stage at 2 km burial depth?
Question 3
According to inversion modeling of post‐accumulation porosity evolution in the Lower Shihezi Formation, how does porosity change during burial subsidence and subsequent uplift?
Question 4
What is the effective stress at 2 km depth if the lithostatic gradient is 22 MPa/km and the pore fluid pressure gradient is 10 MPa/km?
Question 5
Which cement is most likely to precipitate first during early diagenesis (eodiagenesis) in siliciclastic sandstones?