The CMMP is composed of a number of intrusions that are diverse in composition, complexity, and age.
Wiebe (1993a, b) described a specific category of CMMP intrusion that he named mafic and silicic layered intrusions (MASLI).
In fact, only one mafic dike has been mapped (Trefethen 1944) in the entire intrusion, unlike the other granites of the CMMP such as the Deer Isle Complex, where composite dikes are present.
It is a feature common to many mixed magma systems (Baxter and Feely 2002), including, in the CMMP, the Deer Isle (Hookes 2003) and Vinalhaven complexes where it is observed in many mafic enclaves.
Evidence from other MASLI-style intrusions of the CMMP suggests that the mixing/mingling textures were formed deeper in the magma chamber, adjacent to the mafic input zones.