Morphology and Depositional Processes of a Carbonate-Filled Canyon in the Carboniferous KT-II Formation of the Eastern Precaspian Basin, Kazakhstan: Insight from 3D Seismic Data

Figure 5

(a–d) Seismic profiles of the head segment (a, b), middle segment (c), and lower segment (d) (green dotted lines in Figure 4) of the canyon, showing the morphological features of the canyon in different segments. The head segment is the narrowest, the middle segment is the widest, and the lower segment is the deepest. See the text in Section 4.1 for detailed descriptions. The relationship between reverse faults and the canyon is shown. (e) Seismic profiles along the canyon thalweg (red line in Figure 4), showing that the canyon is generally a gentle ramp. Two knickpoints with abrupt morphologic changes subdivide the canyon into three segments. (f) Vertical seismic profile (red dotted line in Figure 4) across the study area, showing the distribution of canyons and carbonate platforms.

(a)

(b)

(c)

(d)

(e)

(f)