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最近在鄂尔多斯盆地东缘石露头（二马营组T(e2)）发现一油气苗，通过对油苗的微观分子组成和碳同位素地球化学特征分析，认为该油苗的地球化学性质与在鄂尔多斯盆地迄今所发现的原油或凝析油差别较大，推测其油源岩为下古生界的碳酸盐岩，这一发现对鄂尔多斯盆地东缘油气勘探可能具有重要的意义。
Recently, a gas-oil seedling was discovered in Shuxuntou (Timai Formation T (e2)) in the eastern margin of Ordos Basin. According to the microscopic molecular composition and carbon isotope geochemical characteristics of oil sprouts, the geochemical characteristics of this oil seedling are considered to be similar to those in the Erdos Basin The crude oil or condensate oil found so far is quite different and it is presumed that the source rocks are carbonate rocks in the Lower Paleozoic. This finding may be of great significance to oil and gas exploration in the eastern margin of the Ordos Basin.