sedimentary basin analysis

Question 1

what can cause subsidence of the crust? X3

Answer 1

Attenuation (stretching) at divergent plate margins
Lithospheric contraction due to cooling at convergent margins
Depression of the lithosphere by sediment loading or by faulting

Question 2

where do sedimentary basins form?

Answer 2

plate boundaries
continental shelves
shallow seas

Question 3

why does subsidence of the crust occur?

Answer 3

The mass of sediments accumulating on the crust causing it to sag downwards to accommodate new sediment, and it initiates new faulting along the basins margins or within the basin itself.

Question 4

what subsurface techniques are used to investigate inaccessible sedimentary basins?

Answer 4

seismic data

well logs

Question 5

what is the impact of high energy levels on fossil evidence?

Answer 5

more collisions between fossils and other debris on the sea floor, increasing breakage. Shorelines usually have high energy due to the influence of tides and waves

Question 6

what type of fossil evidence indicates low energy levels?

Answer 6

whole fossils are indicators.