Carbonate Aquifers - Trace Fossils as Indicators of Sedimentary Environments - page 861

FIGURE 10 Ichnological and paleohydrogeological features of the Kainer Formation along the
wall of an abandoned quarry in Travis County, Texas. (A) Hydrostratigraphy, lithostratigraphy,
and carbonate textures of quarry-wall photomap. (B) Close-up view of inset (blue rectangle), show-
ing beds that have collapsed into a stratiform zone of ichnogenic macroporosity related to a
Thalassinoides -dominated ichnofabric developed in unit 2. (C) Serpentine, irregular boxwork of
Thalassinoides tunnel and shaft casts, and associated interburrow macroporosity in unit 2. (D) Reg-
ular maze of casts of Thalassinoides tunnels near the base of unit 2. (E) Sample (TXEA-1) with a
complexly arranged irregular boxwork of Thalassinoides casts from unit 2 (see Figs. 5 and 6 ;
Table 1 ). (F) Small paleo-cave filled with terra rossa clay in unit 2.