High-resolution geochemical records of black shale deposition in the tropical Cretaceous Atlantic Ocean (Demerara Rise, ODP Leg 207)

热带白垩纪大西洋黑色页岩沉积的高分辨率地球化学记录（德梅拉拉隆起，ODP 207 段）

• 批准号: 5411526
• 负责人: Professor Dr. Hans-Jürgen Brumsack
• 金额: --
• 依托单位: Institut für Chemie und Biologie des Meeres (ICBM)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5411526?language=en
• 关键词: resolution; geochemical; records; black; shale

... The following questions will be addressed by this proposal: 1) To what degree are specific trace metals found enriched in high-resolution black shale profiles from the C/T boundary and how do they vary in time in relation to the carbon isotope shift and correlative micropaleontological and organic geochemical proxies? 2) What are the paleoenvironmental and paleoceanographic consequences that may be deduced from high-resolution major and minor element patterns? 3) What is the most likely source for trace metal enrichments and are there any indications for a hydrothermal contribution? 4) Do major element patterns provide information on (cyclic?) varying weathering conditions in the source areas of terrigenous detrital material? 5) How do trace metal enrichments in C/T black shales from Demerara Rise compare with those from other settings and modern analogues of OC-rich sedimentation? 6) What is the significance of trace metal enrichments in C/T black shales in relation to global trace metal cycles and budgets?

..。这一提议将解决以下问题：1)在C/T边界的高分辨率黑色页岩剖面中发现的特定痕量金属的富集度是多少，它们在时间上是如何变化的，与碳同位素位移和相关的微古生物和有机地球化学指标有关？2)高分辨率的主元素和次要元素模式可能推断出的古环境和古海洋学后果是什么？3)痕量金属富集源是什么？是否有任何热液贡献的迹象？4)主元素模式是否提供了关于(旋回)的信息？陆源碎屑物质源区不同的风化条件？5)德梅拉拉隆起的C/T黑色页岩中的痕量金属富集量与其他环境和现代富含有机碳沉积的类似物相比如何？6)C/T黑色页岩中的痕量金属富集量对全球痕量金属循环和收支有何意义？