The study area comprises the NE–SW trending Burdur Basin situated at the tectonically active northeastern part of the Fethiye–Burdur Fault Zone (FBFZ), SW Turkey. The basin demonstrates a half graben geometry hosting lacustrine sedimentary deposits from the Late Miocene onward and is bounded by normal faults on its southern side namely the Burdur Fault Zone. In this study, gravity anomalies over the Burdur sedimentary basin were inverted for the first time in terms of mapping its basement relief. The algorithm used for inverting the gravity anomalies provides accuracy depth estimates by incorporating an exponential increase in density with depth at its inversion procedure. Thus the obtained depth configuration yields also a major improvement on the results of depth content of the sedimentary infill reported previously by other studies that used a constant density contrast in their interpretation. Along the east of Burdur Fault from south to north, the basement depth to the southern end of Burdur Basin is ca 1.8 km and gets shallower to ca 0.6 km towards the north around the Burdur city. The deepest section of the basin is ca 3.2 km to the western side of the Burdur Fault close the southern end of the Burdur Lake. Towards north, out of the depression area of the Burdur Basin, the sedimentary infill is about in range of 0.4–1.2 km. The lateral limits of the basin structure have also been outlined by a recent edge detection method based on the logistic function of the total horizontal gradient (LTHG). The LTHG map related to the Burdur Basin shows maximal amplitudes trending NE–SW as two major lines that clearly delineates the segments of the Burdur Fault Zone to the S-SE of Burdur Lake. The inverted basin depth model by a cross-section perpendicular to the regional strike of the basin represents two-step depositional area of the sedimentary fills confirming a geometry of a half graben structure.

中文翻译：

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土耳其西南部Burdur沉积盆地上空的重力反演

研究区域包括位于土耳其西南部费特希耶－布尔杜尔断裂带（FBFZ）东北部构造活动东北部的东北－西南走向的布尔杜尔盆地。该盆地表现出半grab陷的几何形状，从中新世晚期起就沉积了湖相沉积沉积物，并在其南部一侧的正常断层（即Burdur断层带）界定了边界。在这项研究中，从Budur沉积盆地上的重力异常首次绘制了其基底起伏图。用于将重力异常反演的算法通过在反演过程中结合深度随深度的指数增长来提供准确的深度估计。因此，所获得的深度构型也对先前由在解释中使用恒定密度对比的其他研究先前报道的沉积填充物的深度含量结果产生了重大改进。沿着Burdur断层的东部，从南到北，到Burdur盆地南端的地下室深度约为1.8公里，向Burdur市北部的北部则浅至0.6公里。盆地最深的部分距Burdur断层的西侧约3.2公里，靠近Burdur湖的南端。向北，在布尔杜尔盆地的depression陷区之外，沉积物充填范围约为0.4-1.2 km。基于总水平梯度（LTHG）的对数函数，最近的边缘检测方法也概述了盆地结构的侧向极限。与Burdur盆地有关的LTHG图显示出NE-SW趋势的最大振幅，这是两条主要线，清楚地描绘了Burdur断层带至Burdur湖的S-SE。垂直于盆地区域走向的横截面的倒置盆地深度模型代表了沉积充填物的两步沉积区域，证实了半grab陷结构的几何形状。