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在将乐等幅1:5万区调中,发现石炭系碎屑岩不整合于震旦系老变质岩之上,与上覆船山组(C_(3C))灰岩呈整合过渡关系。碎屑岩由三个沉积旋回组成,其中采获(竹蜓)类Pseudostaffella和Montiparus,Triticites。时代分别为中、晚石炭世。以上发现说明本区缺失天瓦(山东)—林地组层位,中—上石炭统为连续沉积,闽西南地区亦然,淮南运动在福建可能不存在。石炭纪海浸自闽西南向东北方向推进,碎屑岩具明显的穿时性。据此可以认为;层控的马坑式铁矿也有穿时性,并预测分布于将乐、南平一带的中—上石炭统碎屑岩与上覆船山组灰岩的接融面附近,应是寻找马坑式铁矿的有利部位。
In the area of 1: 50000, the authors found that the Carboniferous clastic rocks are not integrated with the Sinian metamorphic rocks and are in an integrated and transitional relationship with the overlying Chuanshan Formation (C_ (3C)) limestone. Clastic rocks are composed of three sedimentary cycles, of which Pseudostaffella and Montiparus, Triticites are harvested. The times were Middle and Late Carboniferous. The above findings suggest that there is a lack of Tianwa (Shandong) -forested formations in this area, continuous deposition of the middle-upper Carboniferous, and the same in the southwestern Fujian Province. The Huainan movement may not exist in Fujian. Carboniferous sea immersion from southwestern Fujian to the northeast, clastic rocks with obvious wear time. Based on this, it can be concluded that the stratabound Makeng-type iron mines also have time-passing features and are predicted to be located near the joint interface of the Middle-Upper Carboniferous clastic rocks in Gansu and Nanping with the limestone in the overlying Funshan Formation It is a good place to look for MaKeng type iron ore.