Hypabyssal rocks are less common than plutonic or volcanic rocks and often form dikes, sills, laccoliths, lopoliths, or phacoliths. |
Weights of the upper crater zone and lower hypabyssal zone portions of this sample were not published. |
Some intrusive rocks solidified in fissures as dikes and intrusive sills at shallow depth and are called subvolcanic or hypabyssal. |
The geology of the Victor kimberlite is complex, comprising both crater facies and hypabyssal facies kimberlite. |
Photo: Polished slab of fresh hypabyssal Peddie kimberlite. |
The Triple B kimberlite consists of several different phases: hypabyssal kimberlite, dark green fragmental volcaniclastic kimberlite, and its highly altered light green equivalent. |