Newsletters on Stratigraphy最新文献_第7页

Redox element record shows that environmental perturbations associated with the T-OAE were of longer duration than the carbon isotope record suggests – the Aubach section, SW Germany 氧化还原元素记录表明，与T-OAE相关的环境扰动持续时间比碳同位素记录显示的要长——德国西南部奥巴赫剖面

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-04-09 DOI: 10.1127/nos/2020/0630

I. W. Hougård, J. Bojesen‐Koefoed, Madeleine L. Vickers, C. Ullmann, C. Bjerrum, M. Rizzi, C. Korte

{"title":"Redox element record shows that environmental perturbations associated with the T-OAE were of longer duration than the carbon isotope record suggests – the Aubach section, SW Germany","authors":"I. W. Hougård, J. Bojesen‐Koefoed, Madeleine L. Vickers, C. Ullmann, C. Bjerrum, M. Rizzi, C. Korte","doi":"10.1127/nos/2020/0630","DOIUrl":"https://doi.org/10.1127/nos/2020/0630","url":null,"abstract":". The Early Jurassic Toarcian Oceanic Anoxic Event (T-OAE) with its associated carbon-isotope excursion (CIE) was possibly one of the most pronounced periods of widespread oxygen deficiency in the Mesozoic ocean. The event has been extensively studied in order to understand the processes triggering the environmental perturbations and the extreme oxygen depletion in many marine basins. However, comparatively little focus has been placed on the end of the positive CIE and the stratigraphic coherent end of anoxic-euxinic conditions. In the present study, we constrain the stratigraphic extent of anoxic-euxinic conditions and define the termination of the positive CIE in the Swabo-Franconian Basin covering the Lower Toarcian strata using carbon-isotope ratios, organic matter pyrolysis and redox-sensitive element concentrations of outcrop samples from the Aubach section. Bulk organic carbon-isotope values, corrected for changes in type of organic matter using the Hydrogen Index (HI), suggest that the amplitude of the negative CIE in organic matter is as little as 3.3–3.5 ‰, in contrast to 4.5 ‰ change in δ 13 C carb in the same section. Enrichment in redox-sensitive proxies (V/Al and DOP-T) and %TOC suggest that environmental perturbations associated with the T-OAE continued until the upper falciferum Zone in the Aubach section. This indicates that anoxic–euxinic conditions terminated in the same stratigraphic interval in which δ 13 C values return to steady, light values at ~–28 ‰ (termination of positive CIE). This synchronism in the return to normal marine conditions is also observed in the southern Paris Basin, but not in the Cleveland Basin.","PeriodicalId":49750,"journal":{"name":"Newsletters on Stratigraphy","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48645558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Calcareous nannofossil biostratigraphy across the Paleocene-Eocene Thermal Maximum 古新世-始新世热极大期的钙质纳米化石生物地层学

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-04-01 DOI: 10.1127/NOS/2021/0621

Alessandro Menini, E. Mattioli, Arnauld Vinçon-Laugier, G. Suan

引用次数: 2

Comments on “New insight on the age of the Aparein black shales in the Basque-Cantabrian Basin, northern Spain” Frau, Camille. 评《西班牙北部巴斯克-坎塔布连盆地Aparein黑色页岩时代的新认识》Frau, Camille。

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-04-01 DOI: 10.1127/NOS/2021/0668

P. A. Fernández‐Mendiola, J. García‐Mondéjar, H. Owen

引用次数: 1

Dinoflagellate cysts of the upper Campanian–basal Maastrichtian (Upper Cretaceous) of the Middle Vistula River section (central Poland): stratigraphic succession, correlation potential and taxonomy 波兰中部维斯瓦河中段(上白垩世)坎帕尼亚-基底马斯特里希特(上白垩世)的鞭毛藻囊肿:地层演替、对比潜力和分类

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-04-01 DOI: 10.1127/NOS/2021/0639

Mariusz Niechwedowicz, I. Walaszczyk

引用次数: 8

A revision and new data on the Jurassic ammonites from the Biluoco area, southern Qiangtang block (North Tibet) 羌塘地块南部毕洛柯地区侏罗系菊石的订正及新资料

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-03-10 DOI: 10.1127/NOS/2021/0648

Jiarun Yin

引用次数: 9

Middle Triassic carbon isotope fluctuations in the Mecsek Mountains, Hungary 匈牙利Mecsek山脉中三叠世碳同位素波动

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-02-17 DOI: 10.1127/NOS/2021/0627

W. Foster, G. Lukoczki, Krisztina Sebe, G. Price

引用次数: 0

Uranium-lead dates from Livian (middle Viséan) bentonites of the Namur-Dinant Basin, Belgium 来自比利时Namur-Dinant盆地Livian (vis<s:1>中期)膨润土的铀铅日期

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-01-15 DOI: 10.1127/NOS/2021/0622

Michael A. Pointon, D. Chew, M. Ovtcharova, B. Delcambre, G. Sevastopulo

引用次数: 4

A summary of upper Pennsylvanian regional substages defined in NW Spain – the chronostratigraphic legacy of Robert H. Wagner 在西班牙西北部定义的上宾夕法尼亚区域亚相的总结——Robert H.Wagner的年代地层遗产

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-01-15 DOI: 10.1127/NOS/2021/0616

J. A. Knight, C. Álvarez-Vázquez

引用次数: 9

Permian stratigraphy and palynology of the Lower Karoo Group in Mozambique – a 2020 perspective 莫桑比克下卡鲁群二叠纪地层学和孢粉学——2020年展望

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-01-12 DOI: 10.1127/NOS/2021/0618

G. Lopes, Z. Pereira, P. Fernandes, J. Marques, M. Mendes, A. Götz

{"title":"Permian stratigraphy and palynology of the Lower Karoo Group in Mozambique – a 2020 perspective","authors":"G. Lopes, Z. Pereira, P. Fernandes, J. Marques, M. Mendes, A. Götz","doi":"10.1127/NOS/2021/0618","DOIUrl":"https://doi.org/10.1127/NOS/2021/0618","url":null,"abstract":". In the past decade, the increase in the number of palynological works in Mozambique documents the significance of palynology in dating the late Palaeozoic basins in this region of southwestern Gondwana. The new information gained mainly from the study of the Moatize-Minjova Coal Basin is the basis for a better understanding of the regional biostratigraphy, as well as of palaeoenvironmental and palaeoclimatic conditions during the Permian. Here we provide a review on the Permian palynostratigraphy and its implications for lithostratigraphic correlation of Lower Karoo basins in Mozambique. The new biostrati-graphic information leads to the conclusion that an age update for the lithostratigraphic units established for the Lower Karoo in Mozambique (Vúzi, Moatize, and Matinde formations) is most needed. The Cisuralian palynological association in Mozambique is characterized by long-range taxa recorded since the middle Cisuralian (Sakmarian to Artinskian) ( Alisporites spp., Cannanoropollis spp., Horriditriletes spp., Laevi-gatosporites spp., Potonieisporites spp., Protohaploxypinus spp.). Several first occurrences are also recorded in the late Cisuralian (Kungurian) (e. g., Cirratriradites africanensis , Marsupipollenites triradiatus , and Vittatina spp.). The Guadalupian association is mainly characterized by taxa that extend their range since the Cisuralian (e. g., Alisporites spp., Cirratriradites africanensis , Guttulapollenites hannonicus , Horriditriletes ramosus , Kraeuselisporites enormis , Lueckisporites virkkiae , Limitisporites monstruosus , Marsupipollenites striatus , M. triradiatus , Pakhapites fusus , Platysaccus papilionis , Thymospora pseudothiessenii","PeriodicalId":49750,"journal":{"name":"Newsletters on Stratigraphy","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2021-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44123308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Early Jurassic carbon-isotope perturbations in a shallow-water succession from the Tethys Himalaya, southern hemisphere 南半球特提斯-喜马拉雅浅水演替中的早侏罗世碳同位素扰动

IF 2.2 3区地球科学

Newsletters on Stratigraphy Pub Date : 2021-01-12 DOI: 10.1127/NOS/2021/0650

Zhong Han, Xiumian Hu, M. BouDagher-Fadel, H. Jenkyns, M. Franceschi

引用次数: 8