大陆造山带中的隆－滑构造──一种前造山期伸展构造形式

UPLIFT BEDDING -DELAMINATION STRUCTURE IN CONTINENTAL OROGEN ──a new model of pre-orogenic extensional tectonics

大陆造山带中局部隆起－分层滑脱构造系（简称隆－滑构造）是对造山带的深入研究后提出的一种新的构造形式。它是在前造山期伸展构造作用体制下形成的，其结构由内核、外壳及接合面三部分组成。由于它与后造山期形成的变质核杂岩构造有着形貌相似的特点，因而很容易误将其归属为变质核杂岩构造。由于隆－滑构造有其特定的形成时间和独特的组合样式及构造特征，在造山带构造变形演化序列中应占有重要的地位，因而，这类构造的识别和确立对造山带研究有重要意义。由于隆－滑构造形成后又受到造山期收缩作用的挤压改造，它的原始形象已不甚明确，但一般常可以在复背斜构造中首先发现前造山期隆－滑构造的存在。由于隆－滑构造的特殊性，它对于造山带的构造学、地层学、变质作用以及成矿作用等的研究都很有意义。

Based on the detailed study on orogenic belts, a new structual model,thelocal uplift bedding-delamination structural series(UBDSS),is proposed in this paper.The pre-orogenic extensional tectonics probably causes such structural type whichconsists of three parts:core,cover and contact plane,It is very different frommetamorphic core complex. Because the appearance is similar to metamorphic corecomplex, it is easily misregarded as metamorphic core complex. The uplift bedding-delamination structure is very important in the structural succession of orogenic beltbecause of its special forming stage and structural architecture. The identification anddetermination of UBDSS have important significance for the study of orogenic belt.UBDSS is normally superposed by shortening structures so that its primary appearnce isuncertain. However, the uplift bedding-delamination structure could be generallyobserved in the anticlinoria belts,The study of uplift bedding-delamination structure issignificant to the research of orogenic tectonics,stratigraphy,metamorphism anddetermination,and so on.