“Visitors to artist Michael Genovese’s solo show, Lines and Cracks and Zebras and Horses, at the OHWOW Gallery in Los Angeles have cause for concern — massive, silvery cracks run along the otherwise pristine gallery walls. The room appears to be on the verge of crumbling. These fault lines are not really chasms (although you can never really be sure about these things in contemporary art). They are more like casts of chasms, memorials to anything that might take on the form of a line, however sacred or banal. Accompanied by a book of line-dominated images, notably a thunderous herd of zebras, the impossibly reflective sculptures are arresting for their scale and symbolism. Each sculpture is the convergence of disparate worlds: Pompeii frescoes meet Metallica; a crack from an Iranian Mihrab dated 720 A.D. fuses with a mortar line from the vicinity of Castillo de San Marcos in Florida. Looking at them, it’s entirely appropriate to feel like you’re in the throes of an earthquake.