Apatite fission-track thermochronology of the Western Pontides (NW Turkey)
Apatite fission-track thermochronology of the Western Pontides (NW Turkey)
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西蓬蒂德斯（土耳其西北部）的磷灰石裂变径迹热年代学
DOI：
10.1017/s0016756811000525
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发表时间：
2011
影响因子：
2.3
通讯作者：
M. Zattin
中科院分区：
文献类型：
--
作者：
W. Cavazza;I. Federici;A. Okay;M. Zattin
摘要土耳其西北部西庞蒂兹的磷灰石裂变径迹分析结果表明，新生代的三个不连续的折返事件与主要的超区域构造事件有关。(1)古新世-始新世早期的折返反映了阿兹米尔-安卡拉洋的闭合。(2)始新世晚期-渐新世早期的剥露作用是沿着伊兹米尔-安卡拉缝合线的新构造活动的结果。(3)晚渐新世-早中新世的剥露记录了爱琴海北方伸展的开始。在形成西庞蒂德的两个火山岩（即伊斯坦布尔火山岩和萨卡里亚火山岩）之间的构造接触面以北和以南采集的样本记录了相同的冷却事件，表明这些火山岩在前新生代时期合并。
Abstract The results of apatite fission-track analyses of the Western Pontides of NW Turkey point to three discrete episodes of Cenozoic exhumation correlatable with major supraregional tectonic events. (1) Paleocene–early Eocene exhumation reflected the closure of the İzmir–Ankara ocean. (2) Late Eocene–earliest Oligocene exhumation was the result of renewed tectonic activity along the İzmir–Ankara suture. (3) Late Oligocene–early Miocene exhumation recorded the onset of northern Aegean extension. Samples collected north and south of the tectonic contact between the two terranes forming the Western Pontides (i.e. İstanbul and Sakarya terranes) record the same cooling events, suggesting that such terranes were amalgamated in pre-Cenozoic times.