Figure 2
From: Ultra-thin clay layers facilitate seismic slip in carbonate faults
Phyllosilicate occurrence within the carbonate-hosted Tre Monti Fault. (a) Detail of the Tre Monti principal fault showing patches of ultracataclasite above the foliated cataclasite. (b) Phyllosilicate-bearing layer at the boundary between the ultracataclasite and the foliated cataclasite. Inset shows a microphotograph under optical microscope showing a detail of the phyllosilicate-bearing layer. (c) FE-SEM image of micrometer-thick phyllosilicate-bearing layer, which truncates calcite clasts. (d) FE-SEM image of carbonate clasts within a phyllosilicate matrix. Inset shows calcite clasts wrapped by a continuous phyllosilicates film. (e–f) FE-SEM images of nanostructures of natural phyllosilicates from the phyllosilicate-bearing layers characterized by clumped and chained nanospherules and nanotubes.
