Scratching the surface: Footprint of a late Carboniferous ice sheet
Scratching the surface: Footprint of a late Carboniferous ice sheet
复制标题
浅析表面：晚石炭世冰盖的足迹
作者：
D. L. Heron;P. Dietrich;M. Busfield;C. Kettler;S. Bermanschläger;B. Grasemann
利用实地观察结合无人驾驶飞行器的航空图像，绘制了南非晚石炭世德维卡群之下的第一张冰川不整合地图。横向关系表明，Oorlogskloof的冰川不整合，其中凹槽、沟槽和条纹被犁入疏松的沙子，形成了一个三个阶段的过程，描绘了冰下侵蚀轨迹的周期性转移。由周期性分离的冰盖在可能的潮水环境中形成的不整合。这一模型不同于早先的观点，即这些构造仅仅记录了海侵过程中冰缘的渐进式升降，它们为300 Ma冰下环境的复杂时间发展提供了独特的见解。
Field observations in conjunction with aerial images from an unmanned aerial vehicle were used to create the first map of a glacial unconformity underlying the late Carboniferous Dwyka Group of South Africa. Crosscutting relationships reveal that the glacial unconformity at Oorlogskloof, in which flutes, grooves, and striae were ploughed into unconsolidated sand, formed in a three-phased process charting a periodic shift in the locus of subglacial erosion. The unconformity formed by a periodically decoupled ice sheet in a probable tidewater setting. This model contrasts with earlier views that the structures simply record progressive ice-margin liftoff during transgression, and they provide unique insight into the complex temporal development of a 300 Ma subglacial environment.
影响因子：
12.1
作者：
J. Craddock;R. W. Ojakangas;D. Malone;A. Konstantinou;A. Mory;W. Bauer;R. Thomas;S. C. Affinati;K. Pauls;Udo Zimmerman;G. Botha;Anthony Rochas-Campos;P. R. Santos;E. Tohver;C. Riccomini;Joe R Martin;J. Redfern;M. Horstwood;G. Gehrels
通讯作者：
J. Craddock;R. W. Ojakangas;D. Malone;A. Konstantinou;A. Mory;W. Bauer;R. Thomas;S. C. Affinati;K. Pauls;Udo Zimmerman;G. Botha;Anthony Rochas-Campos;P. R. Santos;E. Tohver;C. Riccomini;Joe R Martin;J. Redfern;M. Horstwood;G. Gehrels
DOI：
10.1130/abs/2017am-304461
发表时间：
2019-10
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
N. Griffis;I. Montañez;Nicholas D. Fedorchuk;J. Isbell;R. Mundil;F. Vesely;Luiz Weinshultz;R. Iannuzzi;E. Gulbranson;A. Taboada;Alejandra Pagani;M. Sanborn;M. Huyskens;J. Wimpenny;B. Linol;Q. Yin
通讯作者：
N. Griffis;I. Montañez;Nicholas D. Fedorchuk;J. Isbell;R. Mundil;F. Vesely;Luiz Weinshultz;R. Iannuzzi;E. Gulbranson;A. Taboada;Alejandra Pagani;M. Sanborn;M. Huyskens;J. Wimpenny;B. Linol;Q. Yin