EVOLUTION OF ZAGROS SUTURE ZONE, SOUTHERN IRAN
EVOLUTION OF ZAGROS SUTURE ZONE, SOUTHERN IRAN
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DOI：
10.1130/0016-7606(1974)85
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发表时间：
1974-01-01
影响因子：
4.9
通讯作者：
MCQUILLA.H
中科院分区：
文献类型：
--
作者：
HAYNES, SJ;MCQUILLA.H
根据板块构造理论，提出了伊朗南部扎格罗斯山系的演化模式。位于阿拉伯板块和波斯板块之间的缝合带包括扎格罗斯山脉。缝合带可分为5段，每一段都反映了与阿拉伯和波斯大陆块体碰撞阶段相关的各种岩性和构造环境。阿拉伯板块俯冲到波斯板块稳定块体之下所形成的海沟一直持续到中白垩世晚期。这是放射虫燧石沉积和相关的浊积岩和岩屑的网站。海沟西南部上白垩纪沉积物的急剧相变和海沟北部破碎带的剧烈构造运动暗示着海洋地壳片的断裂和向上冲断运动，这些运动现在表现为海沟带中的超镁铁质岩带。第三纪期间阿拉伯板块随后向北运动，导致毗邻海沟区的叠瓦带发生逆冲断层和过度褶皱，西南方向的简单褶皱带发生更平缓的褶皱。
In the light of plate tectonic theory, a model for the evolution of the Zagros mountain system in southern Iran is proposed. A suture zone, which lies between the Arabian and Persian plates, comprises the Zagros mountain range. The suture zone is divisible into five segments, each of which reflects the various lithologic and tectonic environments associated with stages in the collision of the Arabian and Persian continental masses.A trench resulting from the subduction of the Arabian plate beneath the stable block of the Persian plate persisted until late mid-Cretaceous time. This was the site of radiolarian chert deposition and associated turbidites and olistoliths. Sharp facies changes in Upper Cretaceous sediments immediately southwest of the trench and severe tectonism in the crush zone to the north of the trench are suggestive of movements which involved the rupture and upward thrusting of slices of oceanic crust now manifest as a belt of ultramafic rocks in the trench zone. Subsequent northward movement of the Arabian plate during Tertiary time resulted in thrust faulting and overfolding in the imbricated belt adjoining the trench zone and more gentle folding in the simply folded belt to the southwest.