为确定渤海辽东湾海域内的石英砂岩地层从属，以及该套石英砂岩的物源特征和地质意义，对辽东湾的BD4-1a井2482 m附近所取得石英砂岩样品进行分析和研究。所取样品编号分别为2482-1、2482-2、2482-3、2482-4和2482-5，对五件样品进行了全岩地球化学分析，同时对2482-3号样品进行了锆石U-Pb测年，获得135颗锆石年龄。
", "ds_source": "数据源：元素组成数据来自以下文献：\n[1]赵子霖，周雪威，李夔洲，郭涛，彭靖松，侯明才．辽东湾海域新元古界长 龙山组石英砂岩物源特征及其地质意义[J/OL]．沉积学报. https://doi.org/10.14027/j.issn.1000-0550.2022.093\n测试仪器、方法和过程：\n
（1） 全岩地球化学：\n全岩主量、微量元素分析在武汉上谱分析科技有限责任公司完成。全岩主量元素测试采用仪器为日本理学PrimusⅡ X射线荧光光谱仪（XRF），将样品在105 ℃烘干后称取~1.0 g计算烧失量；使用无水Li2B4O7为助熔剂，NH4NO3为氧化剂制成玻璃片进行XRF测试。全岩微量元素测试采用电感耦合等离子体质谱仪Agilent 7700e ICP-MS分析完成，将称取的50 mg样品粉末放在Teflon溶样弹中，依次加入HF和 HNO3后置于烘箱中在~190 ℃加热24 h以上，使样品全溶；使用1 mL内标In（浓度为1×10-6）再次处理；最后将溶液转入聚乙烯料瓶中，并用2%HNO3稀释至100 g后进行ICP-MS测试。\n
（2） 锆石U-Pb年龄：\n锆石的挑选、制靶和CL照相在南京宏创地质勘查技术服务有限公司完成。首先在载玻片上粘贴双面胶，将分选好的锆石颗轻轻抖落至低倍显微镜下，用极细的钩子将颗粒整齐有序的粘贴在双面胶上（沉积岩一般粘贴150~200个颗粒，火成岩粘贴50~100个颗粒），将直径1cm×1cm的圆形空心管粘贴在载玻片上并保持所粘贴的颗粒在最中心，用配置好的环氧树脂灌注，并在恒温箱里放置两天。凝固后对锆石靶进行粗磨、细磨、抛光。随后对表面喷碳后拍摄阴极发光（CL）显微图，在普通显微镜下采集反射光、透射光图像。采集完图像后利用绘图软件对其进行拼接，将制作好的三种图像放在一起进行对比选择出较好的测点位置。\nU-Pb定年在油气藏地质及开发工程国家重点实验室（成都理工大学）完成，实验设备为美国应用光谱公司Resolution LR 193nm激光剥蚀系统和美国安捷伦7900质谱仪。此次分析中，激光能量密度为3.5 J/cm2，束斑直径29 µm，频率8 Hz，剥蚀45 s；以标准锆石91500为外标，校正仪器质量歧视和元素分馏；以标准锆石PLE为盲标，检验数据质量；使用NIST SRM610为外标、Si为内标，标定锆石微量元素含量。\n
对分析数据的离线处理采用软件ICPMSDataCal完成。利用Isoplot/Ex_ver3对锆石样品的U-Pb年龄谐和图绘制和年龄加权平均计算。
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", "ds_acq_start_time": "2016-05-01 00:00:00", "ds_acq_end_time": "2016-08-01 00:00:00", "ds_acq_place": "渤海辽东湾地区 BD4-1a井2482m附近", "ds_acq_lon_east": 120.66666666666667, "ds_acq_lat_south": 39.669444444444444, "ds_acq_lon_west": 120.51666666666667, "ds_acq_lat_north": 39.73277777777778, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "open-access", "ds_total_size": 119847, "ds_files_count": 2, "ds_format": "数据集储存为.docx格式", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "c946009e-90d3-4b5e-b204-9cbb51e5a164.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.30" ], "quality_level": 3, "publish_time": "2022-11-21 15:39:58", "last_updated": "2025-04-29 15:30:48", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.geochem.db2545.2022", "i18n": { "en": { "title": "Source Characteristics and Geological Significance of Quartz Sandstone of Neoproterozoic Changlongshan Formation in Liaodong Bay Sea Area", "ds_format": "docx", "ds_source": "Data source: Element composition data comes from the following literature:\n[1] Zhao Zilin, Zhou Xuewei, Li Kuizhou, Guo Tao, Peng Jingsong, Hou Mingcai. Source characteristics and geological significance of quartz sandstone in the Changlongshan Formation of the Neoproterozoic in the Liaodong Bay area [J/OL]. Journal of Sedimentology https://doi.org/10.14027/j.issn.1000-0550.2022.093\nTesting instruments, methods, and processes:\n(1) Whole rock geochemistry\nThe main and trace element analysis of the entire rock was completed by Wuhan Shangpu Analysis Technology Co., Ltd. The main elements of the entire rock were tested using a Japanese physics Primus II X-ray fluorescence spectrometer (XRF), and the sample was dried at 105 ℃ before weighing~1.0 g to calculate the loss on ignition; Glass sheets were made using anhydrous Li2B4O7 as the flux and NH4NO3 as the oxidant for XRF testing. The trace element testing of the entire rock was completed using an inductively coupled plasma mass spectrometer Agilent 7700e ICP-MS analysis. A weighed 50 mg sample powder was placed in a Teflon dissolution bomb, followed by the addition of HF and HNO3. The sample was then heated in an oven at~190 ℃ for more than 24 hours to achieve complete dissolution; Use 1 mL of internal standard In (concentration 1 × 10-6) Re processing; Finally, transfer the solution into a polyethylene bottle and dilute it to 100 g with 2% HNO3 before conducting ICP-MS testing.\n(2) Zircon U-Pb age\nThe selection, target making, and CL photography of zircons were completed at Nanjing Hongchuang Geological Exploration Technology Service Co., Ltd. Firstly, stick double-sided adhesive tape onto the glass slide, gently shake off the sorted zircon particles to a low magnification microscope, and use a very fine hook to neatly and orderly stick the particles onto the double-sided adhesive tape (sedimentary rocks generally stick 150-200 particles, igneous rocks stick 50-100 particles), with a diameter of 1cm × A 1cm circular hollow tube is pasted onto a glass slide and the particles are kept at the center. The prepared epoxy resin is poured and placed in a constant temperature oven for two days. After solidification, the zircon target is roughly ground, finely ground, and polished. Subsequently, a cathodoluminescence (CL) micrograph was taken after carbon spraying on the surface, and images of reflected and transmitted light were collected under a regular microscope. After collecting the images, use drawing software to concatenate them, and compare the three types of images together to select a better measurement point position.\nU-Pb dating was completed in the State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering (Chengdu University of Technology), and the experimental equipment was the Resolution LR 193nm laser ablation system of American Applied Spectrum Company and Agilent 7900 mass spectrometer. In this analysis, the laser energy density was 3.5 J/cm2, the beam spot diameter was 29 µ m, the frequency was 8 Hz, and the erosion lasted for 45 seconds; Using standard zircon 91500 as the external standard to correct instrument quality discrimination and elemental fractionation; Using standard zircon PLE as a blind standard to test data quality; Use NIST SRM610 as the external standard and Si as the internal standard to calibrate the trace element content of zircon.\nThe offline processing of analytical data is completed using software ICPMSDataCal. Utilizing Isoplot/Ex_ Plot the U-Pb age harmony map and calculate the age weighted average of zircon samples using ver3
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", "ds_ref_way": "", "ds_abstract": "To determine the stratigraphic affiliation of quartz sandstone in the Liaodong Bay area of the Bohai Sea, as well as the source characteristics and geological significance of this set of quartz sandstone, quartz sandstone samples obtained near 2482 meters of the BD4-1a well in Liaodong Bay were analyzed and studied. The samples were numbered 2482-1, 2482-2, 2482-3, 2482-4, and 2482-5, respectively. Whole rock geochemical analysis was conducted on five samples, and zircon U-Pb dating was conducted on sample 2482-3, obtaining 135 zircon ages
", "ds_time_res": "", "ds_acq_place": "Near 2482m of BD4-1a well in the Liaodong Bay area of Bohai Sea", "ds_space_res": "", "ds_projection": "", "ds_process_way": "None
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "辽东湾海域", "新元古界长龙山组", "石英砂岩", "地球化学", "碎屑锆石U-Pb年龄" ], "ds_subject_tags": [ "地球化学" ], "ds_class_tags": [], "ds_locus_tags": [ "天津市" ], "ds_time_tags": [ 2021 ], "ds_contributors": [ { "true_name": "赵子霖", "email": "zzlzzlzzl1225@163.com", "work_for": "成都理工大学", "country": "中国" }, { "true_name": "李夔洲", "email": "likuiz@cdut.edu.cn", "work_for": "成都理工大学", "country": "中国" }, { "true_name": "侯明才", "email": "houmc@cdut.edu.cn", "work_for": "成都理工大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "赵子霖", "email": "zzlzzlzzl1225@163.com", "work_for": "成都理工大学", "country": "中国" } ], "ds_managers": [ { "true_name": "赵子霖", "email": "zzlzzlzzl1225@163.com", "work_for": "成都理工大学", "country": "中国" } ], "category": "地球化学" }