Miocene sea-level change and carbon cycling: New Jersey shallow shelf Expedition 313

中新世海平面变化和碳循环：新泽西浅陆架探险 313

• 批准号: NE/F001428/1
• 负责人: Stephen Hesselbo
• 金额: $ 6.31万
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FF001428%2F1
• 关键词: Miocene; sea; level; change; carbon

The Early/Middle Miocene, 24-14 million years ago, represents an important phase in the development of the present 'ice house' world. Specifically the Earth's climate system oscillated between relatively cool and relatively warm states until Antarctic glaciation was firmly established in the later half of the Middle Miocene. On the basis of geochemical data obtained from deep ocean sediments, these climatic oscillations were characterized by sea-level changes and changes in patterns of carbon burial that acted in concert, with inferred increases in carbon burial during sea-level lowstands. Drilling to take place in Miocene shallow marine sediments (IODP Expedition 313) gives an opportunity to assess whether the evidence from the oceanic record is borne out by analysis of these nearshore sedimentary successions, which would be expected (on this old stable continental margin) to respond very sensitively to changes in global sea-level. Recent work on older geological intervals has demonstrated the potential of terrestrial organic matter as an archive of the carbon-isotope composition of atmospheric carbon-dioxide, which acts as a monitor of burial and release of carbon from sedimentary reservoirs. The proposed work is aimed at providing quantitative information from Miocene woody organic matter showing how the Earth's carbon cycle responded to glacially driven changes in global sea level and attendant changes in continental climate. In addition to testing the synchrony between carbon cycle and sea-level changes inferred from deep oceanic sediments, the proposed work will test the limits of application of this new method, and provide data that will allow further investigation of the linkages between environmental changes on land and those occurring in the oceans.

早/中中新世，2400万至1400万年前，代表了当今“冰屋”世界发展的一个重要阶段。具体来说，地球的气候系统在相对凉爽和相对温暖的状态之间振荡，直到南极冰川在中中新世后半期牢固建立。根据从深海沉积物获得的地球化学数据，这些气候振荡的特点是海平面变化和碳埋藏模式的变化，这些变化是一致的，推测在海平面低水位期间碳埋藏增加。在中新世浅海沉积物中进行的钻探（IODP第313次考察）提供了一个机会，以评估来自海洋记录的证据是否通过对这些近岸沉积序列的分析得到证实，这些沉积序列（在这一古老的稳定大陆边缘）预计对全球海平面的变化非常敏感。最近关于较老地质间隔的工作表明，陆地有机物有潜力成为大气二氧化碳碳同位素组成的档案，可作为沉积储层埋藏和释放碳的监测器。拟议的工作旨在提供中新世木质有机物的定量信息，说明地球的碳循环如何对冰川驱动的全球海平面变化和随之而来的大陆气候变化作出反应。除了测试从深海沉积物推断的碳循环和海平面变化之间的同步性外，拟议的工作将测试这一新方法的应用范围，并提供数据，以便进一步调查陆地环境变化与海洋环境变化之间的联系。

项目成果

Vegetation and climate development on the North American Atlantic Coastal Plain from 33 to 13 million years ago (IODP Expedition 313)

33至1300万年前北美大西洋沿岸平原的植被和气候发展（IODP Expedition 313）

• DOI: 10.5194/cpd-9-6551-2013
• 发表时间: 2013
• 作者: Kotthoff U

Sedimentology, stratigraphic context, and implications of Miocene intrashelf bottomset deposits, offshore New Jersey

• DOI: 10.1130/ges01530.1
• 发表时间: 2017-12
• 期刊: Geosphere
• 影响因子: 2.5
• 作者: D. Hodgson;J. Browning;K. Miller;S. Hesselbo;M. Poyatos‐Moré;G. Mountain;J. Proust

Sea-level control of New Jersey margin architecture: Palynological evidence from Integrated Ocean Drilling Program Expedition 313

• DOI: 10.1130/ges00853.1
• 发表时间: 2013-12
• 期刊: Geosphere
• 影响因子: 2.5
• 作者: F. McCarthy;M. Katz;U. Kotthoff;J. Browning;K. Miller;Ryan Zanatta;Ross H. Williams;Matea Drljepan;S. Hesselbo;C. Bjerrum;G. Mountain

Facies architecture of Miocene subaqueous clinothems of the New Jersey passive margin: Results from IODP-ICDP Expedition 313

• DOI: 10.1130/ges01545.1
• 发表时间: 2018-04
• 期刊: Geosphere
• 影响因子: 2.5
• 作者: J. Proust;H. Pouderoux;H. Ando;S. Hesselbo;D. Hodgson;J. Lofi;M. Rabineau;P. Sugarman