Northern Alberta kimberlite province maar-style diatremes that have a vertical-walled volcanic crater of explosive origin, surrounded by a low rim of ejecta. Pyroclastic fall and surge are the two volcanic mechanisms of deposition. There are also deposits formed by hydraulic reworking and resedimentation of material from tephra cones and/or extra-crater fall and surge deposits. The NAKP volcanics, including the ML pipes, contain abundant lapilli and olivine supported in a fine-grained groundmass. Other minerals may include serpentine, clay minerals, carbonate minerals, phlogopite, ilmenite, perovskite, spinel, apatite, pyrite and, in some cases, diamonds. Northern Alberta kimberlite province The Northern Alberta Kimberlite Province (NAKP) consists of three
Latin Grammy Award for Best Rock Album Latin Grammy Award for Best Rock Album The Latin Grammy Award for Best Rock Album is an honor presented annually by the Latin Academy of Recording Arts & Sciences at the Latin Grammy Awards, a ceremony that recognizes excellence and promotes a wider awareness of cultural diversity and contributions of Latin recording artists in the United States and internationally. According to the category description guide for the 2012 Latin Grammy Awards, the award is for vocal or instrumental rock albums containing at least 51 percent of newly recorded material. It is awarded to solo artists, duos or groups. The accolade