flaser structure

1. A metamorphic structure in which small lenses and layers of granular material are surrounded by a matrix of sheared, crushed material, resembling a crude flow structure. Also known as pachoidal structure. 2. A primary sedimentary structure consisting of fine-sand or silt lenticles that are aligned and cross-bedded.

Related terms:

• flaser
• ebb-and-flow structure
• flow structure
• tepee structure
• flaser gabbro
• sealing-wax structure
• pillow structure
• directional structure
• core-and-mantle structure
• Sedimentary Structure