Multiscale Erosion Surfaces of the Organic-Rich Barnett Shale, Fort Worth Basin, USA

Figure 10

(a) Core photo shows an event-scale erosion surface with sharp nature (dashed line) between laminated black shale and an overlying dark laminated gray shale bed. (b) Thin section photo shows siliceous noncalcareous mudstone facies below the event-scale erosion surface in (a). (c) Thin section photo shows siliceous calcareous mudstone facies above the event-scale erosion surface in (a).

(a)

(b)

(c)