The Wunstorf drilling project: Coring a global stratigraphic reference section of OAE 2 for the correlation with ODP Leg 207 records

Wunstorf 钻探项目：对 OAE 2 的全球地层参考部分进行取芯，以便与 ODP Leg 207 记录进行关联

• 批准号: 18386515
• 负责人: Professor Dr. Jochen Erbacher
• 金额: --
• 依托单位: Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2007-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/18386515?language=en
• 关键词: Wunstorf; drilling; project; Coring; global

The Cenomanian / Turanian (C / T) boundary interval, which is globally characterised by the deposition of black shales (OAE 2), has been studied for more than 20 years. Currently we compile a high-resolution 5l3Corg dataset for the OAE 2 of OOP Leg 207 in order to correlate these black shales to records elsewhere. The high resolution palaeotemperature and carbon isotope records suffer, however, from a poor stratigraphic control. We therefore look for a site which allows us to establish a stratigraphic reference section of the OAE 2, including data from micropalaeontology, macropalaeontology and stable isotopes. This will be achieved by coring a unique and expanded succession of the OAE 2 at Wunstorf, Germany. The Wunstorf section comprises one of the world s most expanded, accessible middle Cenomanian to early Turanian successions with thick black shales. Abundant and welt preserved macro- and microfossils, known from the near by quarry, will enable us to develop a high resolution chemo- and biostratigraphy for the C / T boundary interval which will serve as an international standard. A high-resolution isotope-stratigraphic correlation of Leg 207 holes and the Wunstorf section will also enable us to understand the precise timing of the observed paleoceanographic changes at Leg 207.

Cenomanian / Turanian（C / T）边界间隔，其全球特征是黑色页岩（OAE 2）的沉积，已经研究了20多年。目前，我们为OOP Leg 207的OAE 2编制了一个高分辨率的5l 3Corg数据集，以便将这些黑色页岩与其他地方的记录相关联。然而，高分辨率的古温度和碳同位素记录受到地层控制差的影响。因此，我们寻找一个网站，使我们能够建立一个地层参考部分的OAE 2，包括数据从微体古生物学，宏观古生物学和稳定同位素。这将通过在德国温斯托夫对OAE 2的独特和扩展继承进行取芯来实现。文斯托夫剖面是世界上最大的、最容易进入的森诺曼中期到图兰早期的连续地层之一，具有厚厚的黑色页岩。从附近的采石场了解到的大量保存完好的宏化石和微体化石，将使我们能够为C / T边界层段建立一个高分辨率的化学和生物地层学，这将成为国际标准。一个高分辨率的同位素地层对比腿207孔和文斯托夫节也将使我们能够了解在腿207所观察到的古海洋学变化的精确时间。