The earliest products of volcanism on Mont Pelee consist of brecciated lava flows, epiclastic breccias, and minor lava flows of acid andesite composition. Breccias are the most abundant, with two main types being identified: Tombeau Caraibe and Macouba. Tombeau Caraibe deposits are generally disorganized and are interpreted as the products of non-explosive disintegration of lava during flowage. Macouba deposits are usually stratified and their origin is poorly understood.