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首页> 外文期刊>Geosciences Journal >Tectonic Geomorphology of the North Anatolian Fault Zone in the Lake Sapanca Basin (eastern Marmara Region, Turkey)
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Tectonic Geomorphology of the North Anatolian Fault Zone in the Lake Sapanca Basin (eastern Marmara Region, Turkey)

机译：萨潘卡湖盆地（土耳其东部马尔马拉地区）北安纳托利亚断裂带的构造地貌

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摘要

In this study the spatial variations of the Plio-Quaternary tectonic activity and deformation of different fault segments of the North Anatolian Fault Zone (NAFZ) in the eastern Marmara region around Lake Sapanca, are assessed using geomorphic, morphometric and bathymetric approaches. Lake Sapanca is an E-W-trending structure located in the İzmit-Sapanca Corridor. This region is bounded to the north and to the south by the series of mountain ranges. Geomorphic and morphometric data provide evidence for variations between the two mountain front faults regarding levels of tectonic activity. These studies suggest a relatively high degree of tectonic activity along the Sapanca front in the south, in contrast with a low degree of tectonic activity along the E me front in the north of the study area. This pattern is also consistent with field evidence and seismic data of the study area. Bathymetric profiles of the lake show that the lake basin consists of different fault segments that slipped in the 1999 Kocaeli earthquake. All these data suggest that the İzmit-Sapanca Corridor is an asymmetric pull-apart basin associated with displacement along the NAFZ in the Late Pliocene. Lake Sapanca also occurs as a pull-apart basin created by the cross-basin fault of the asymmetric pull-apart basin in the Middle Pleistocene.
机译：在这项研究中，使用地貌，形态学和测深方法评估了萨潘卡湖东部马尔马拉地区北部安那托利亚断层带（NAFZ）不同上层第四纪构造活动和不同断层段的变形。萨潘卡湖是位于伊兹密特-萨潘卡走廊的E-W趋势结构。该区域被一系列山脉限制为北部和南部。地貌和形态计量学数据为两个山前断裂在构造活动水平方面的变化提供了证据。这些研究表明，沿着南部萨潘卡锋的构造活动程度相对较高，而研究区域北部沿着E me锋的构造活动程度较低。这种模式也与研究区域的现场证据和地震数据一致。该湖的测深剖面表明，该湖盆由不同的断层段组成，这些断层段在1999年的科贾埃利地震中滑动。所有这些数据表明，İzmit-Sapanca走廊是一个不对称的拉分盆地，与上新世晚期沿NAFZ的位移有关。萨潘卡湖也发生在中更新世非对称拉断盆地的跨盆断层所形成的拉断盆地中。

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