The thickly-bedded conglomerates and conglomeratic sandstones developed in braided river delta are widely distributed, and are favorable oil and gas reservoirs.

• 从沉积物的岩性特征看，辫状河三角洲砾岩和含砾粗砂岩体具有分布较稳定、展布较广、储集物性较好的特点。