Journal of Nannoplankton Research最新文献_第10页

Quantification of a pretreatment procedure for organic-rich calcareous nannofossil samples. 富有机钙质纳米化石样品预处理过程的定量分析。

Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2224

J. L. Shamrock, J. Self‐Trail

引用次数: 1

Oligocene-Pliocene taxonomy and stratigraphy of the genus Sphenolithus in the circum North Atlantic Basin: Gulf of Mexico and ODP Leg 154. 北大西洋盆地环缘蝶石属的渐新世-上新世分类和地层学:墨西哥湾和ODP Leg 154。

Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2016

J. Bergen, E. de Kaenel, S. A. Blair, T. Boesiger, E. Browning

{"title":"Oligocene-Pliocene taxonomy and stratigraphy of the genus Sphenolithus in the circum North Atlantic Basin: Gulf of Mexico and ODP Leg 154.","authors":"J. Bergen, E. de Kaenel, S. A. Blair, T. Boesiger, E. Browning","doi":"10.58998/jnr2016","DOIUrl":"https://doi.org/10.58998/jnr2016","url":null,"abstract":"Sphenolithus is secondary only to the genusDiscoaster in Cenozoic nannofossil biostratigraphy, notably of primary importance for the Oligocene to Early Miocene. The research presented herein provides a framework for Oligocene to Middle Pliocene Sphenolithus, where gradations between individual taxa and their stratigraphic ranges are presented. Integration of schemes from BP, Amoco and Arco Vastar, to form a single composite Neogene calcareous nannofossil framework for the Gulf of Mexico basin, began around the turn of the century with focus on refining taxonomic concepts to solve stratigraphic discrepancies between the heritage schemes. Further study and bioevent calibration was accomplished through analyses of deep-water wells in the Gulf of Mexico along with research grounding the integrated framework to the “astronomical clock” of ODP Leg 154 back into the middle Early Oligocene at an average sample resolution of 21 kyr. Forty-two species are considered herein, in addition to the morphologically-similar Ilselithina fusa. Thirteen new species are introduced. Sphenolithus peartiae and Sphenolithus distentus are emended. Clarification of taxonomic concepts by the use of morphologic groups is supplemented with identification tables, drawings, and light photomicrographs. Iterative processes, in terms of size, are stressed.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128280178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 22

Distribution of NE Gulf of Mexico nannoplankton assemblages following the Macondo Well blowout: August–November 2011–2013. 2011年8月- 2013年11月，墨西哥湾东北部Macondo油井井喷后的纳米浮游生物群落分布。

Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2071

J. Cruz, S. Wise, W. Parker, J. Young

{"title":"Distribution of NE Gulf of Mexico nannoplankton assemblages following the Macondo Well blowout: August–November 2011–2013.","authors":"J. Cruz, S. Wise, W. Parker, J. Young","doi":"10.58998/jnr2071","DOIUrl":"https://doi.org/10.58998/jnr2071","url":null,"abstract":"The biodiversity and biomass of coccolithophore species observed in the NE Gulf of Mexico during August through November of 2011 to 2013 were quite dynamic. Following the Macondo Well blowout in 2010, analyses were carried out on samples taken during the subsequent three years. The photic zone was sampled at 28 sites, along four transects across the continental shelf and slope, in order to observe ecological patterns in the calcareous nannoplankton assemblages. The number of observed species increased from station to station, moving from shallow continental shelf waters into deep water. This was related to a two-layered water configuration, observed during August to November. In moving into the deeper waters, the salinity, temperature and amount of light penetration began to change, which was useful for tracing the thermocline and distinguishing the two layers. Once the depth exceeded 75m, a new assemblage of deeper photic-zone dwellers could be observed. Therefore, two separate nannoplankton assemblages were distinguished, an upper one from the mixed layer, from the surface to 75m depth, and a lower one below the thermocline, from 75m to the lower limits of the photic zone, which for the Gulf of Mexico is 200m. A comparison of site biodiversity and biomass across the stations during the study period also showed an increase in both cell density and number of species observed for each successive year sampled. The lowest cells/L and species diversity were observed in 2011, with increasing numbers in 2012, and the highest recorded in 2013.","PeriodicalId":186533,"journal":{"name":"Journal of Nannoplankton Research","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131927099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First observation of Navilithus altivelum in the Gulf of Mexico. 在墨西哥湾首次观察到海百合。

Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2070

Jarrett Cruz, S. Wise, J. Young

引用次数: 2

Jurassic–Cretaceous boundary interval in the Ropice section from the perspective of biostratigraphy, stable isotopes and palaeomagnetism. 从生物地层学、稳定同位素和古地磁的角度探讨罗皮斯剖面侏罗系-白垩系边界段。

Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/jnr2239

A. Svobodová, L. Švábenická, D. Reháková, M. Bubík, L. Vaňková, M. Košťák, P. Skupien, T. Elbra, P. Pruner

引用次数: 0

INA Newsletter - Special edition Vienna Meeting Abstracts. 国际航空协会通讯-维也纳会议摘要特别版。

Journal of Nannoplankton Research Pub Date : 1900-01-01 DOI: 10.58998/nina2310

S. V. van Heck