辽宁义县-北票盆地深部地壳构造及油气远景———兼论珍稀动物产生与大面积物种死亡之谜

摘要/Abstract

摘要： 辽西地区丰富的热河生物化石群，尤其是带羽毛的恐龙及珍稀鸟类的发现，各种类动物大面积死亡而其化石又完整地被保存下来，引起地学界极大关注。通过对穿越盆地的东乌珠穆沁旗(海城(东沟地学断面的综合研究，发现义县(北票盆地的深部中地壳有一低速层(v_p=5.8~6.0km/s)。结合Pd同位素急变带分布，认为义县-北票盆地深部有大型油气田。在此基础上>还揭示了辽西地区珍稀化石形成及生物大面积死亡之谜。

关键词: 义县-北票盆地, 珍稀化石, 物种灭绝, 地学断面, 中地壳, 低速层, 同位素急变带, 油气远景

Abstract: It causes domestic geoscientists' great concern that the abundant biological fossil group of Rehe in western Liaoning was found, especially the dinosaur with feather and rare birds were discovered, with various animals' large-area death but keeping remains intact. The comprehensive study of Dongwuzhumuqinqi- Haicheng-Donggou cross-section indicates that there exists a low-velocity layer (v_p=5.8-6.0km/s) in deep middle-crust of Yixian-Beipiao basin. According to the distribution of Pb isotope discontinuity zone, it is considered that large-sized oil-gas field exists in the deep of this basin. Also, this paper reveals the mystery of concurrent formation of the rare bio-fossils and large- area death of the species.

Key words: Yixian-Beipiao basin, Yixian formation, rare fossil, species extinction, cross section, middle crust, low-velocity layer, isotope discontinuity zone, petroleum potential

中图分类号:

TE111.1

张景廉. 辽宁义县-北票盆地深部地壳构造及油气远景———兼论珍稀动物产生与大面积物种死亡之谜[J]. 新疆石油地质, 2005, 26(4): 445-449.

ZHANG Jing-lian. Deep Crust Structure and Petroleum Potential in Yixian-Beipiao Basin, Liaoning Province一And concurrently produced the mystery with large-area species death in terms of rare animal[J]. Xinjiang Petroleum Geology, 2005, 26(4): 445-449.

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