Field Trip

During the field trip, we will visit the following geological sites (Fig. 1):

Fig. 1 Locations of the geological sties for the Field Symposium.

(1) the Kongling Complex, consisting of the Archean and Paleoproterozoic metamorphic rocks which are considered as the oldest basement of the Yangtze craton (Fig. 2A);

(2) the Shennongjia Group, ~1.2 Ga silisiclastic and carbonate strata (Fig. 2B);

(3) the newly recognized Miaowan Ophiolite complex (Fig. 2C) dated at ~1.1 Ga, which might be related to the Grenville-aged orogeny and thus to the assembly of Rodinia;

(4) the ~820 Ma Huangling Granitoids and the Xiaofeng composite dykes (Fig. 2D) which are under intensive debate as to whether they were related to a high-paleolatitudinal superplume or to a peri-Rodinia subduction zone;

(5) the Liantuo and Nantuo formations, presenting the pre-Cryogenian siliciclastic deposits and glacial diamictites, respectively (Fig. 2E);

(6) the Ediacaran–Paleozoic carbonate-shale sequence (Fig. 2F) that preserves the oldest multicellular animal fossils and many other well-studied fossil assemblages.

Fig. 2 Field photographs showing: (A) gneiss of the Kongling Complex; (B) stromatolitic carbonates of the Luanshigou Formation, Shennongjia Group; (C) ultramafic rocks of the Miaowan Ophiolite; (D) Xiaofeng Dykes intruding the Huangling Granitoids; (E) Nantuo tillite; (F) carbonate-shale sequence of the Ediacaran Doushantuo Formation.