The Maling area in the Ordos Basin is characterized by delta front deposits. The principal oil-bearing layer. Chang 8 Member (the 8th member of the Triassic Yanchang Formation). manifests low-to-ultra-low porosity and permeability due to the interplay of depositional. https://www.spidertattooz.com/Jacques-Marie-Mage-Picabia-Beige-2/