Marine Micropaleontology
Papers 1776
1 page of 178 pages (1,776 results)
#1Pooja Ghadi (Goa University)
#2Abhilash Nair (Esso)H-Index: 1
Last. Thamban Meloth (Esso)
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Abstract Antarctic sea ice plays a vital role in global climate via its impact on ocean circulation, biological productivity and CO2 partitioning between the ocean and the atmosphere. However, very little is known about its past history, especially in the southwestern Indian sector of the Southern Ocean (SO). We here provide new quantitative records of winter sea-ice concentration (WSIC) and duration (WSID), sea-surface temperatures (SST) and productivity in sediment core SK 200/33 (55°S – 45°E)...
#1David K. Watkins (NU: University of Nebraska–Lincoln)H-Index: 20
#2Rodrigo do Monte Guerra (Universidade do Vale do Rio dos Sinos)H-Index: 5
Abstract International Ocean Discovery Program drilling in the Great Australian Bight (Site U1512) provides a record of Turonian to Santonian hemipelagic sedimentation deposited in an elongate epicontinental basin that opened westward to the Southern Ocean during the peak and the early decline of the Cretaceous hot greenhouse. Despite its relatively high paleolatitude (at about 60°S), the biostratigraphy of calcareous nannofossils from this succession is directly correlative to low-latitude zona...
#1Luis Carvalho (UFSC: Universidade Federal de Santa Catarina)H-Index: 8
#2Gerson Fauth (Universidade do Vale do Rio dos Sinos)H-Index: 9
Last. A. von Wangenheim (UFSC: Universidade Federal de Santa Catarina)H-Index: 7
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Abstract Computational analysis applicability to paleontological images ranges from the study of the evolution of animals, plants and microorganisms to the habitat simulation of living beings from a specific epoch. It can also be applied in several niches, e.g. oil exploration, where several factors can be analyzed in order to minimize costs related to oil extraction. One specific factor is the characterization of the environment to be explored. This analysis can occur in several ways: use of pr...
#1Ismail Adejare Ladigbolu (ZJU: Zhejiang University)H-Index: 1
#2Hongliang Li (Ontario Ministry of Natural Resources)H-Index: 1
Last. Jianfang Chen (ZJU: Zhejiang University)
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Abstract The East Asian monsoon system influences the local oceanographic and climatic conditions of South China Sea (SCS), making the habitat depths of planktonic foraminifera (PF) specific for this region.The previous paleo-ocean reconstructions of SCS have been based on calcification habitat depths derived from other oceans, which may have affected the accuracy of interpretations. In this study, the calcification depths of Globigerinoides ruber, Globigerinoides sacculifer, and Neogloboquadrin...
#1Min Meng (Xida: Guangxi University)
#2Kefu Yu (Xida: Guangxi University)
Last. Guoquan Qin (Xida: Guangxi University)
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Abstract The key to the utility of foraminifers as paleo-environmental indicators for coral reefs is the knowledge of modern assemblages in relation to environmental conditions. This study examined 44 surface-sediment samples from three small islands in Yongle Atoll, with the purpose of investigating the relationship between foraminiferal distribution and environmental characterization. In samples, 192 foraminiferal species belonging to 74 genera were identified, among which the hyaline foramini...
#1Youjia Zou (Shanghai Maritime University)
#2Xiangying Xi (WUT: Wuhan University of Technology)
Abstract The Younger Dryas event is one of the most abrupt climate changes observed in Northern Hemisphere paleoclimatic records. The possible driver, despite being proposed by a number of authors, is still under vigorous debate with no scientific consensus. Most studies investigated the AMOC, with its shutdown being responsible for a reduction of heat and salt in the North Atlantic. However, by reanalyzing and comparing the paleoclimatic records from the northern and southern sites of the Brazi...
#1Amanda Gerotto (USP: University of São Paulo)
#2Rubens Cesar Lopes Figueira (USP: University of São Paulo)H-Index: 22
Last. Renata Hanae Nagai (UFPR: Federal University of Paraná)H-Index: 11
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Abstract Here, we examined changes in carbonate preservation in a deep-sea record (Hole U1431D, 4240 m water depth) retrieved from the South China Sea (SCS) during the International Ocean Discovery Program (IODP) Expedition 349. To evaluate these changes, we applied a micropaleontological and geochemical multiproxy approach including, planktonic foraminifera (PF) total abundance, fragmentation (FI%) and dissolution (FDX) indexes, and total organic carbon (TOC). The results of this study showed t...
#1Jonathan P. Warnock (IUP: Indiana University of Pennsylvania)H-Index: 5
#2Rachel E. Krueger (IUP: Indiana University of Pennsylvania)
Abstract The processes affecting diatom dissolution and upper water column silica recycling are understood in modern environments. However, few studies have been undertaken to understand which processes have the greatest impact on diatom preservation in sedimentary archives. Furthermore, variability in diatom dissolution in the upper water column of past oceans is rarely quantified. Here we present a record of diatom dissolution, a proxy for upper water column silica recycling, from the Pliocene...
#1Tiia Luostarinen (UH: University of Helsinki)
#2Sofia Ribeiro (Geological Survey of Denmark and Greenland)H-Index: 16
Last. Maija Heikkilä (UH: University of Helsinki)H-Index: 16
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Abstract We recorded diatom species succession over one full year (May 2017–May 2018) using automated sediment traps installed in two contrasting Greenlandic fjords: the seasonally ice-covered Young Sound in high-arctic Northeast Greenland and the nearly sea-ice free Godthabsfjord in subarctic Southwest Greenland. The traps were positioned at differing water depths (37 m in Young Sound vs. 300 m in Godthabsfjord). Distinct differences between the study sites were observed in both sediment and di...
#1M. Mojtahid (University of Angers)
Last. P. De Deckker (ANU: Australian National University)H-Index: 49
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Abstract We present fossil benthic foraminiferal assemblage data from marine sediment core SS02/06-GC2 located in the abyssal plain of the Murray Canyon Group (offshore South Australia). The sedimentological characteristics indicate the presence of turbidite deposits showing classical Bouma-like sequences, dated between ~40 and 12 cal ka BP. These results confirm the previous interpretation of the observed large deep-water holes in the abyssal area where the core was sampled as being gouged by s...
Top fields of study
Benthic zone