  To understand the true origin of flowlike signatures and applicability of
hydrodynamics in small collision systems, effects of soft QCD dynamics, the
sensitivity of jetlike correlations, and nonequilibrium effects, efforts are
being made to perform \textit{p}-O and O-O collisions at the LHC and RHIC
energies. It is equally interesting to look into the possible signatures of an
$\alpha$-clustered nuclear geometry in $^{16}$O-$^{16}$O collisions by studying
the initial-state effects on the final-state observables. In this work, within
a multiphase transport model, we implement an $\alpha$-cluster tetrahedral
density profile in the oxygen nucleus along with the default Woods-Saxon
density profile. We study the eccentricity ($\epsilon_2$), triangularity
($\epsilon_3$), normalized symmetric cumulants [NSC(2,3)], elliptic flow
($v_2$), and triangular flow ($v_3$) in $^{16}$O-$^{16}$O collisions at
$\sqrt{s_{\rm NN}} = 7~$TeV. The constituent quark number scaling of the
elliptic flow is also reported. For the most central collisions, enhanced
effects in $\langle \epsilon_3 \rangle/ \langle \epsilon_2 \rangle$ and
$\langle v_3 \rangle/ \langle v_2 \rangle$ with a negative value of NSC(2,3),
and an away-side broadening in the two-particle azimuthal correlation function
[$C(\Delta \phi)$] of the identified particles are observed in the presence of
an $\alpha$-clustered geometry.
