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.

塞诺曼阶/图兰阶 (C/T) 边界层段在全球范围内以黑色页岩沉积 (OAE 2) 为特征，已研究了 20 多年。目前，我们为 OOP Leg 207 的 OAE 2 编译了高分辨率 5l3Corg 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，高分辨率古温度和碳同位素记录却受到地层控制不佳的影响。因此，我们寻找一个地点，使我们能够建立 OAE 2 的地层参考部分，包括来自微型古生物学、宏观古生物学和稳定同位素的数据。这将通过在德国文斯托夫对 OAE 2 的独特和扩展系列进行核心化来实现。文斯托夫地段是世界上面积最大、交通最方便的中塞诺曼阶至早期图兰阶地层之一，含有厚厚的黑色页岩。来自附近采石场的丰富且完好保存的宏观和微观化石将使我们能够开发出 C/T 边界区间的高分辨率化学和生物地层学，这将成为国际标准。 207 段孔和文斯托夫剖面的高分辨率同位素地层对比也将使我们能够了解在 207 段观测到的古海洋变化的精确时间。