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3D reconstruction of the Lapis Tiburtinus (Tivoli, Central Italy): The control of climatic and sea-level changes on travertine deposition
Basin Research ( IF 2.8 ) Pub Date : 2021-05-22 , DOI: 10.1111/bre.12576 Alessandro Mancini 1 , Giovanna Della Porta 1 , Rudy Swennen 2 , Enrico Capezzuoli 3
Basin Research ( IF 2.8 ) Pub Date : 2021-05-22 , DOI: 10.1111/bre.12576 Alessandro Mancini 1 , Giovanna Della Porta 1 , Rudy Swennen 2 , Enrico Capezzuoli 3
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3D modelling is a fundamental tool to visualize and understand the history of sedimentary basin filling and to reconstruct the geobody architecture. Spatial distribution of discontinuity surfaces and geobody characteristics provide valuable information on the factors controlling the sedimentary evolution of basins. Several Neogene-Quaternary basins of central-western Italy are controlled by extensional and strike-slip tectonics and characterized by travertine deposition, related to hydrothermal fluids rising up along discontinuities and fractured carbonate bedrocks. This study presents the 3D modelling results of the quarry area within the tectonically controlled Acque Albule Basin (Tivoli, Central Italy) that hosts the Pleistocene Lapis Tiburtinus travertine. The 3D reconstruction of the different surfaces bounding the travertine units shows a complex architecture composed of depressions, reliefs and channels as predominant morphological elements related to four different depositional environments (subaqueous, palustrine, slope and travertine channel). The reconstructed surface maps highlight the presence of laterally migrating, E–W-oriented lens-shaped geometries, with a drainage system persistent through time oriented towards the southern part of the study area in the direction of the Aniene River, bordering the Acque Albule Basin in the South. The Lapis Tiburtinus travertine developed in an area of 28 km2, accumulated in a system composed of sub-basins (approximately 1–2 km2 wide) with subaqueous conditions interconnected by a hydrographic network, controlled through time by fluctuations of the Aniene River base level. Based on the results obtained, base-level fluctuations of the Aniene River, related to glacio-eustatic sea-level oscillations of the last 115 kyrs associated with alternation of humid and arid climatic conditions, arise as the most important factor affecting the architecture of the travertine geobodies.
中文翻译：
Lapis Tiburtinus（意大利中部蒂沃利）的 3D 重建：石灰华沉积对气候和海平面变化的控制
3D 建模是可视化和了解沉积盆地充填历史以及重建地质体结构的基本工具。不连续面的空间分布和地质体特征为控制盆地沉积演化的因素提供了有价值的信息。意大利中西部的几个新近纪-第四纪盆地受伸展和走滑构造控制，以钙华沉积为特征，与沿不连续性和破裂的碳酸盐基岩上升的热液流体有关。本研究展示了受构造控制的 Acque Albule 盆地（意大利中部蒂沃利）内采石场区域的 3D 建模结果，该盆地拥有更新世Lapis Tiburtinus石灰华。围绕石灰华单元的不同表面的 3D 重建显示了由凹陷、浮雕和通道组成的复杂结构，这些结构是与四种不同沉积环境（水下、沼泽、斜坡和石灰华通道）相关的主要形态元素。重建的表面图突出了横向迁移的、东西向的透镜状几何形状的存在，排水系统随着时间的推移一直朝向研究区的南部，朝向阿涅内河的方向，与阿克阿尔布勒盆地接壤在南方。所述拉皮斯Tiburtinus在28公里的区域开发石灰华2，系统中的积累由分盆地（大约1-2公里的2宽）水下条件由水文网络互连，由阿涅内河基线的波动随时间控制。根据获得的结果，与潮湿和干旱气候条件交替相关的最后 115 kyrs 的冰川 - 海平面振荡相关的阿涅内河的基线波动是影响河流结构的最重要因素。石灰华地质体。
更新日期：2021-05-22
中文翻译：
Lapis Tiburtinus（意大利中部蒂沃利）的 3D 重建：石灰华沉积对气候和海平面变化的控制
3D 建模是可视化和了解沉积盆地充填历史以及重建地质体结构的基本工具。不连续面的空间分布和地质体特征为控制盆地沉积演化的因素提供了有价值的信息。意大利中西部的几个新近纪-第四纪盆地受伸展和走滑构造控制，以钙华沉积为特征，与沿不连续性和破裂的碳酸盐基岩上升的热液流体有关。本研究展示了受构造控制的 Acque Albule 盆地（意大利中部蒂沃利）内采石场区域的 3D 建模结果，该盆地拥有更新世Lapis Tiburtinus石灰华。围绕石灰华单元的不同表面的 3D 重建显示了由凹陷、浮雕和通道组成的复杂结构，这些结构是与四种不同沉积环境（水下、沼泽、斜坡和石灰华通道）相关的主要形态元素。重建的表面图突出了横向迁移的、东西向的透镜状几何形状的存在，排水系统随着时间的推移一直朝向研究区的南部，朝向阿涅内河的方向，与阿克阿尔布勒盆地接壤在南方。所述拉皮斯Tiburtinus在28公里的区域开发石灰华2，系统中的积累由分盆地（大约1-2公里的2宽）水下条件由水文网络互连，由阿涅内河基线的波动随时间控制。根据获得的结果，与潮湿和干旱气候条件交替相关的最后 115 kyrs 的冰川 - 海平面振荡相关的阿涅内河的基线波动是影响河流结构的最重要因素。石灰华地质体。
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