The principle of superposition states that, in an undisturbed sequence,

each bed is younger than the one below it

A dyke cuts through a set of sedimentary beds. The dyke is

younger than the beds, by cross-cutting relationships

deposition, tilting, erosion and a gap, then renewed deposition

Hard parts, rapid burial and low-oxygen conditions

fossil organisms succeed one another in a fixed, recognisable order through time

a short vertical range and a wide horizontal range

matching rocks of the same age in different places

Its half-life is far too short and granite has no suitable carbon

produce sharp, global, correlatable changes in the fossil record

14questions. Pick an answer and you'll see why right away.

The principle of superposition states that, in an undisturbed sequence,
A dyke cuts through a set of sedimentary beds. The dyke is
Pebbles enclosed within a conglomerate are
An angular unconformity records, in order,
Which conditions most favour the preservation of a fossil?
Faunal succession is the principle that
A good zone (index) fossil should have
Correlation in stratigraphy means
After two half-lives, the fraction of the radioactive parent remaining is
A mineral has one part parent to three parts daughter. How many half-lives have passed?
Why can carbon-14 not be used to date a granite?
The geological timescale, from largest to smallest division, is
The three eras of the Phanerozoic, oldest first, are
Mass extinctions make convenient timescale boundaries because they