Huameishan Anticline located in the Humeishan area is composed of composite anticlines and its axis direction is northeast to southwest. The northwest wing is slightly steep with a dip angle of 50° while the southeast wing is relatively smooth with a dip angle of 40°. The core stratum is composed of striped limestone formed 480 million years ago (Early Ordovician) and the wing stratum is composed of striped limestone formed 500 million years ago (Late Cambrian).

Fold-structure

Fold-syncline