Workshop on the Continental Margins: Evolution of Passive Continental Margins and Active Marginal Processes

美国国家科学院（NAS）海洋研究委员会（OSB） 将于1988年底召开大陆边缘问题研讨会， 主动和被动大陆边缘的构造和演化。 研讨会将分为两部分。 第一个将侧重于 被动大陆边缘的演变。 研讨会的这一部分 将考虑岩石圈断裂力学;岩浆过程- 与大陆裂谷和被动边缘有关的层序;层序和 裂谷和被动边缘的形态;以及 被动利润 第二部分将集中在积极的边缘过程，并将解决 会聚板块边缘力学与活动板块边缘演化 地壳和地幔 会聚型板块边缘力学的研究将 考虑位移、地震活动性和收敛边界处的变形， aries;转换断层力学;俯冲力学;几何学 以及增生楔的变形。 对进化的研究- 主动板块边缘将考虑开始聚合;构造 洋内岛弧和弧后盆地的演化;增生 地形;以及俯冲物质的命运。 80名科学家将参加研讨会， 一组联邦机构。 讲习班的讨论将包括： 在一份“会议记录”报告中进行了总结，该报告将广泛分发给 赞助机构和科学界。

The Ocean Studies Board (OSB) of the National Academy of Sciences (NAS) will convene a Workshop on Continental Margins in late 1988 to compare the tectonics and evolution of active and passive continental margins. The workshop will be divided into two parts. The first will focus on evolution of passive continental margins. This section of the workshop will consider mechanics of rifting of the lithosphere; magmatic proces- ses associated with continental rifts and passive margins; sequences and morphology of rifts and passive margins; and sedimentary deposition at passive margins. The second part will focus on active marginal processes and will address convergent plate margin mechanics and evolution of active plate margin crust and mantle. The study of convergent plate margin mechanics will consider displacements, seismicity, and deformation at convergent bound- aries; mechanics of transform faults; subduction mechanics; and geometry and deformation of accretionary wedges. The study of evolution of ac- tive plate margins will consider initiation of convergence; tectonic evolution of intra-oceanic island arcs and back-arc basins; accreted terrains; and fates of subducted materials. Eighty scientists will participate in the workshop with support from a group of Federal agencies. The deliberations of the workshop will be summarized in a "Proceedings" report which will be widely ditributed to the sponsoring agencies and the scientific community.