为了厘清晚二叠世浅海氧化还原变化与生物复苏之间的关系，揭示海洋缺氧与同期气候—构造事件的深层联系，对上扬子北缘上寺剖面晚二叠世吴家坪期进行研究，共采集样品38件，其中来自吴家坪组的样品为23件，来自大隆组下部的样品为15件。将所有样品分为两个部分，分别用于（1）碳氧同位素分析和（2）碳酸盐岩主微量元素分析。
", "ds_source": "测试一起、方法和过程：1. 碳氧同位素分析在南京宏创勘探技术服务公司完成。具体实验流程是将碳酸盐粉末装入12 mL圆底硼硅酸盐容器中，置于72℃恒温样品盘与无水磷酸反应，以氦气为载体将萃取的CO2送入稳定同位素质谱仪，单个样品累计吹扫 10 次。2. 碳酸盐岩的微量元素地球化学分析在广州澳实矿物实验室完成。将 0.05g 样品粉末用 1 M 乙酸在30℃的超声波水浴中溶解30分钟，然后将溶液在室温下放置12h。将溶液离心并清洗3次，将残余物烘干并称重以计算溶解百分比。随后将上清液在120℃下蒸发至接近干燥，并重新溶解在0.2M HNO3中。
", "ds_process_way": "选取上扬子北缘具高分辨率时间框架约束的上寺剖面吴家坪阶地层作为研究对象，开展了沉积学和沉积地球化学研究，重建了晚二叠世吴家坪期海洋氧化还原环境。
", "ds_quality": "碳氧同位素测试使用四种国标（GBW04405、GBW04406、GBW04416 和 GBW04417）对样品进行校准。执行VPDB标准，δ13Ccarb的标准偏差优于 0.01‰。微量元素分析在 American PE 5300V 上进行。分析过 程 采 用 国 家 标 准 GBW07314、GBW07315、GBW07316 和 美 国 地 质 调 查 局 玄 武 岩 标 准 物 质6BHVO-2作质量监控，大部分元素结果相对误差小于5%。
", "ds_acq_start_time": "2022-03-20 00:00:00", "ds_acq_end_time": "2022-06-20 00:00:00", "ds_acq_place": "四川省广元市", "ds_acq_lon_east": 105.45, "ds_acq_lat_south": 32.31666666666667, "ds_acq_lon_west": 105.45, "ds_acq_lat_north": 32.31666666666667, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 30289, "ds_files_count": 3, "ds_format": ".xlsx", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "66d86954-2a48-490d-8401-378c2fa16c7b.jpg", "ds_thumb_from": 0, "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": "lihongxing@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.5034" ], "quality_level": 3, "publish_time": "2024-12-19 14:55:06", "last_updated": "2025-04-29 14:56:48", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.GEOCHEM.DB6688.2024", "i18n": { "en": { "title": "Reconstruction of Ocean Redox Environment During the Late Permian Wuchiapingian, Northern Margin of Upper Yangtze", "ds_format": ".xlsx", "ds_source": "Testing together, methods and processes: 1 The carbon and oxygen isotope analysis was completed at Nanjing Hongchuang Exploration Technology Service Company. The specific experimental procedure is to fill the carbonate powder into a 12 mL round bottom borosilicate container, place it in a 72 ℃ constant temperature sample plate, and react it with anhydrous phosphoric acid. The extracted CO2is sent to a stable isotope mass spectrometer using helium gas as the carrier, and each sample is purged a total of 10 times. The geochemical analysis of trace elements in carbonate rocks was completed at the Guangzhou Ausilicon Mineral Laboratory. Dissolve 0.05g of sample powder in 1 M acetic acid in an ultrasonic water bath at 30 ℃ for 30 minutes, then leave the solution at room temperature for 12 hours. Centrifuge and wash the solution three times, dry the residue, and weigh to calculate the dissolution percentage. Subsequently, the supernatant was evaporated to near dryness at 120 ℃ and dissolved again in 0.2M HNO3.
", "ds_quality": "The carbon and oxygen isotope testing uses four national standards (GBW04405, GBW04406, GBW04416, and GBW04417) to calibrate the samples. According to the VPDB standard, the standard deviation of δ13Ccarbis better than 0.01 ‰. Trace element analysis was conducted on American PE 5300V. The analysis process adopts national standards GBW07314, GBW07315, GBW07316, and the US Geological Survey basalt standard material 6BHVO-2 for quality monitoring. The relative error of most element results is less than 5%.
", "ds_ref_way": "", "ds_abstract": "In order to clarify the relationship between shallow sea redox changes and biological recovery in the Late Permian, and to reveal the deep connection between oceanic hypoxia and contemporaneous climate tectonic events, a study was conducted on the Wujiaping period of the Shangsi section on the northern edge of the Yangtze River in the Late Permian. A total of 38 samples were collected, including 23 samples from the Wujiaping Formation and 15 samples from the lower part of the Dalong Formation. Divide all samples into two parts for (1) carbon oxygen isotope analysis and (2) analysis of major and trace elements in carbonate rocks.
", "ds_time_res": "", "ds_acq_place": "Guangyuan City, Sichuan Province", "ds_space_res": "", "ds_projection": "", "ds_process_way": "We selected the Wujiaping Formation in the Shangsi section of the northern margin of the Yangtze River with high-resolution time frame constraints as the research object, conducted sedimentological and sedimentary geochemical studies, and reconstructed the marine redox environment during the Late Permian Wujiaping period.
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "https://creativecommons.org/licenses/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": [ "晚二叠世", "Ce异常", "海洋缺氧", "生物复苏", "上扬子" ], "ds_subject_tags": [ "沉积学" ], "ds_class_tags": [], "ds_locus_tags": [ "四川省广元市" ], "ds_time_tags": [ 2022 ], "ds_contributors": [ { "true_name": "雍茹男", "email": "yongrunan@stu.cdut.edu.cn", "work_for": "成都理工大学沉积地质研究院", "country": "中国" }, { "true_name": "孙诗", "email": "sstopwin@163.com", "work_for": "成都理工大学油气藏地质及开发工程全国重点实验室", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "雍茹男", "email": "yongrunan@stu.cdut.edu.cn", "work_for": "成都理工大学沉积地质研究院", "country": "中国" }, { "true_name": "孙诗", "email": "sstopwin@163.com", "work_for": "成都理工大学油气藏地质及开发工程全国重点实验室", "country": "中国" } ], "ds_managers": [ { "true_name": "雍茹男", "email": "yongrunan@stu.cdut.edu.cn", "work_for": "成都理工大学沉积地质研究院", "country": "中国" }, { "true_name": "孙诗", "email": "sstopwin@163.com", "work_for": "成都理工大学油气藏地质及开发工程全国重点实验室", "country": "中国" } ], "category": "地球化学" }