南方型含油气域——纪念翁文波《世界油田的分布规律》发表50周年

On Austral-Style Petroliferous Domain

南方型含油气域是在翁文波当年建立的南方体系基础上划分的。根据板块分布,把南方体系分成了澳洲(即印度-澳洲)、非洲(即非洲-阿拉伯)和南美3个含油气域。它们在中生代以前,曾经和南极洲在一起,组成庞大的冈瓦纳大陆。只是在中生代至新生代间分裂开来,既形成了印度洋和南大西洋,又参与太平洋的形成,还促使特提斯洋关闭。在陆核之上及周边的古生界带、中生界带和新生界带,有相当部分的重合。其中波斯湾盆地最为典型,古生界、中生界和新生界次第重合。形成了内克拉通、前陆及褶皱带、活动大陆边缘、离散大陆边缘和内裂谷等5种盆地类型。含油层位有较高的速率。在波斯湾盆地,油气藏(田)形成过程中有明显的再次运移过程,即有复式石油系统。

The classification of austral-style petroleum domain is based on previous austral system established by Dr. Weng Wen-bo. The austral system was divided into three petroliferous domains as Australia （India-Australia）, Africa （Africa-Arabia） and South America in terms of global plate distribution. It was the three domains that ever made up of Gondwana land together with Antarctica before Mesozoic era, and were then separated from Gondwana land during Mesozoic to Cenozoic, forming Indian Ocean and South Atlantic Ocean as well as Pacific Ocean, along with Tethys closure. Hence, the Paleozoic, Mesozoic and Cenozoic zones over continental nucleus and its circumferences were of both individual feature and sizable superposition. The most typical Persian Gulf basin is characterized by the superposition with these zones one after another. Five types of basins such as intracratonic basin, foreland basin and fold belt, movable continental margin, divergent continental margin and impactogen basin then occurred and the higher deposition velocity of oil zones appear on their sedimentary curves. Oil-gas pools or fields found in Persian Gulf basin possess obvious remigration processes known as a complex petroleum system.