The Relationship between Fluid Flow, Structures, and Depositional Architecture in Sedimentary Rocks: An Example-Based Overview

Figure 7

Not all fractures act as conduits for fluid flow, and hence iron oxide precipitates do not surround all fractures. Along-strike variability of the fractures may cause along-strike variability in the distribution of iron oxide precipitates. Examples from (a) Hokianga, New Zealand and (b) the footwall of the Moab Fault in Arches National Park. White arrows point to the areas of fractures associated with iron oxide precipitates, while the red arrows point towards some of the fractures which do not promote formation of iron oxide precipitates.

(a)

(b)