Mississippian Bowland Shale dataset: from Hind Clough, Marl Hill 4 (MHD4) and Cominco S9 (Craven Basin, UK). Iron Speciation, total organic carbon and selected major and trace element geochemical data.

This dataset was acquired as part of a NERC-funded Doctoral Training Partnership (DTP) PhD Studentship at the University of Leicester and British Geological Survey between 2014-2018 [grant no. NE/L002493/1] (see also Emmings, 2018 unpublished PhD thesis). This research was conducted within the Central England NERC Training Alliance (CENTA) consortium. This dataset accompanies a manuscript titled "Late Palaeozoic Phytoplankton Blackout: A 100 Myr Record of Enhanced Primary Productivity". Co-authors and co-workers were: Joseph F. Emmings (University of Leicester, British Geological Survey); Sarah J. Davies (University of Leicester); Simon W. Poulton (University of Leeds); Michael H. Stephenson (British Geological Survey); Gawen R. T. Jenkin (University of Leicester); Christopher H. Vane (British Geological Survey); Melanie J. Leng (British Geological Survey, University of Nottingham) and Vicky Moss-Hayes (British Geological Survey). Nick Riley (Carboniferous Ltd) is thanked for sharing biostratigraphic expertise and assistance. Nick Marsh and Tom Knott are thanked for providing assistance during geochemical analyses. This dataset contains the following data (in Microsoft Excel format). 1) Fe species abundance data measured at the University of Leeds using the sequential extraction method of Poulton and Canfield (2005) and pyrite S extraction method of Canfield et al., (1986); 2) Total Fe, Si, Mn and Al major element concentrations (measured using x-ray fluorescence at the University of Leicester; XRF); 3) Total organic carbon (TOC) and inorganic C (MINC) data measured via Rock-Eval pyrolysis at the British Geological Survey; 4) Cu, Mo and U trace element concentration data (measured via XRF at the University of Leicester) and enrichment factors relative to Post-Archaean Average Shale (PAAS; Taylor and McLennan, 1985). Analyses were coupled on 99 sample powders from three positions in the Craven Basin and spanning ammonoid biozones P2c-d to E1c1. See also http://dx.doi.org/10.5285/9ceadcad-a93c-4bab-8ca1-07b0de2c5ed0 for additional sedimentological and geochemical data from Hind Clough, MHD4 and Cominco S9. These data were also interpreted together with 20 drill-core samples previously acquired from Hind Clough (‘HC01’ prefix). See http://dx.doi.org/10.5285/c39a32b2-1a30-4426-8389-2fae21ec60ad for further information regarding this drill-core dataset. References: Emmings, J. 2018. Controls on UK Lower Namurian Shale Gas Prospectivity: Understanding the Spatial and Temporal Distribution of Organic Matter in Siliciclastic Mudstones. Unpublished PhD Thesis. University of Leicester. Poulton, S. W. & Canfield, D. E. 2005. Development of a sequential extraction procedure for iron: implications for iron partitioning in continentally derived particulates. Chemical Geology 214, 209-221, doi:http://dx.doi.org/10.1016/j.chemgeo.2004.09.003. Canfield D., Raiswell R., Westrich J., Reaves CM, Berner RA. 1986. The use of chromium reduction in the analysis of reduced inorganic sulfur in sediments and shales. Chemical Geology, 54(1): 149-155. Taylor S, McLennan S. 1985. The Continental Crust: Its Composition and Evolution. Blackwell Scientific: London.

本数据集于2014-2018年间依托莱斯特大学与英国地质调查局（British Geological Survey）实施的、由英国自然环境研究理事会（NERC，Natural Environment Research Council）资助的博士生培训合作项目（Doctoral Training Partnership，DTP）博士生奖学金项目获取，资助编号为NE/L002493/1（详见未发表博士论文Emmings, 2018）。本研究隶属于英格兰中部NERC培训联盟（CENTA）联合体。
本数据集与一篇题为《晚古生代浮游植物崩溃：1亿年尺度的初级生产力增强记录》的研究稿件配套发布。共同作者及合作者包括：Joseph F. Emmings（莱斯特大学、英国地质调查局）、Sarah J. Davies（莱斯特大学）、Simon W. Poulton（利兹大学）、Michael H. Stephenson（英国地质调查局）、Gawen R. T. Jenkin（莱斯特大学）、Christopher H. Vane（英国地质调查局）、Melanie J. Leng（英国地质调查局、诺丁汉大学）以及Vicky Moss-Hayes（英国地质调查局）。感谢Nick Riley（Carboniferous Ltd）分享生物地层学专业知识并提供协助，感谢Nick Marsh与Tom Knott在地球化学分析过程中提供协助。
本数据集包含以下格式为Microsoft Excel的数据集：1) 采用Poulton与Canfield（2005）提出的铁连续提取法及Canfield等人（1986）的黄铁矿硫提取法，于利兹大学测得的铁物种丰度数据；2) 于莱斯特大学采用X射线荧光光谱法（X-ray fluorescence，XRF）测得的全铁、硅、锰及铝常量元素浓度数据；3) 于英国地质调查局采用Rock-Eval热解分析法测得的总有机碳（Total Organic Carbon，TOC）与无机碳（Inorganic Carbon，MINC）数据；4) 于莱斯特大学采用XRF测得的铜、钼、铀微量元素浓度数据，以及相对于太古代后平均页岩（Post-Archaean Average Shale，PAAS；Taylor与McLennan, 1985）的富集因子。
本次分析共涵盖采自克拉文盆地（Craven Basin）3个采样点位的99份样品粉末，样品覆盖菊石生物带P2c-d至E1c1。详见https://dx.doi.org/10.5285/9ceadcad-a93c-4bab-8ca1-07b0de2c5ed0，该链接包含来自Hind Clough、MHD4及Cominco S9的额外沉积学与地球化学数据。本次研究同时结合了此前从Hind Clough获取的20份岩心样品（样品前缀为‘HC01’）。有关该岩心数据集的更多详细信息详见https://dx.doi.org/10.5285/c39a32b2-1a30-4426-8389-2fae21ec60ad。
参考文献：
Emmings, J. 2018. Controls on UK Lower Namurian Shale Gas Prospectivity: Understanding the Spatial and Temporal Distribution of Organic Matter in Siliciclastic Mudstones. Unpublished PhD Thesis. University of Leicester.
Poulton, S. W. & Canfield, D. E. 2005. Development of a sequential extraction procedure for iron: implications for iron partitioning in continentally derived particulates. Chemical Geology 214, 209-221, doi:https://dx.doi.org/10.1016/j.chemgeo.2004.09.003.
Canfield D., Raiswell R., Westrich J., Reaves CM, Berner RA. 1986. The use of chromium reduction in the analysis of reduced inorganic sulfur in sediments and shales. Chemical Geology, 54(1): 149-155.
Taylor S, McLennan S. 1985. The Continental Crust: Its Composition and Evolution. Blackwell Scientific: London.