  We investigate the phenomenon of spatial many-body localization (MBL) through
pairwise correlation measures based on one and two-point correlation functions.
The system considered is the Heisenberg spin-1/2 chain with exchange
interaction $J$ and random onsite disorder of strength $h$. As a representative
pairwise correlation measure obtained from one-point functions only, we use
global entanglement. Through its finite size scaling analysis, we locate the
MBL critical point at $h_{c}/J = 3.8$. As for measures involving two-point
functions, we analyze pairwise geometric classical, quantum, and total
correlations. Similarly to what happens for continuous quantum phase
transitions, it is the derivatives of these two-point correlation measures that
identify the MBL critical point, which is found to be in the range $h_{c}/J \in
\left[3,4\right]$. Our approach relies on very simple measures that do not
require access to multipartite entanglement or large portions of the system.
