major fold

major fold

[′mā·jər ′fōld]
(geology)
A large-scale fold with which minor folds are usually associated.
References in periodicals archive ?
The acquired gold mines located in three major fold belts of the PRC consist of Chifeng in Inner Mongolia (Chifeng), Ailao Shan in Yunan (Mojiang) and Xiaoqinling in Henan (Kangshan & Luanling) which have proven quality gold reserves, enjoy substantially lower costs of production compared with the average costs borne by other local and multinational gold mining companies.
The site features one major fold in the land, and the holes on the par 72 layout have been thoughtfully knitted around this feature, which will come into your thoughts on more than one occasion.