W. B. Turner,
"Rock blocks"

Abstract
"Consider representation theory associated to the symmetric
groups, or to Hecke algebras in type A, or to q-Schur algebras, or
to finite general linear groups in non-describing characteristic.
Rock blocks are certatin combinatorially defined blocks in such a
representation theory, first observed by R. Rouquier. Rock blocks are much
more symmetric than generic blocks, and every block is derived equivalent
to a Rock block. Motivated by a theorem of J. Chuang and R. Kessar in the
case of symmetric group blocks of nonabelian defect, we pursue a structure
theorem for these blocks."