Structural features and oil-and-gas bearing of the Caribbean region

Oceanology ◽  
2017 ◽  
Vol 57 (5) ◽  
pp. 723-737
Author(s):  
A. Zabanbark ◽  
L. I. Lobkovsky
2021 ◽  
Author(s):  
Lorenzo Alvarez-Filip ◽  
F. González-Barrios ◽  
Esmeralda Pérez-Cervantes ◽  
Ana Molina-Hernandez ◽  
Nuria Estrada-Saldívar

Abstract Diseases are major drivers of the deterioration of coral reefs, linked to major declines in coral abundance, reef functionality, and reef-related ecosystems services1-3. An outbreak of a new disease is currently rampaging through the populations of the remaining reef-building corals across the Caribbean region. The outbreak was first reported in Florida in 2014 and reached the northern Mesoamerican reef by summer 2018, where it spread across the ~ 450-km reef system only in a few months4. Rapid infection was generalized across all sites and mortality rates ranged from 94% to < 10% among the 21 afflicted coral species. This single event further modified the coral communities across the region by increasing the relative dominance of weedy corals and reducing reef functionality, both in terms of functional diversity and calcium carbonate production. This emergent disease is likely to become the most lethal disturbance ever recorded in the Caribbean, and it will likely result in the onset of a new functional regime where key reef-building and complex branching acroporids (a genus apparently unaffected) will once again become conspicuous structural features in reef systems with yet even lower levels of physical functionality.


2021 ◽  
Author(s):  
Lenin Balza ◽  
Lina M. Díaz ◽  
Nicolás Gómez Parra ◽  
Osmel Manzano

The Latin America and the Caribbean region has benefited significantly from economic growth driven by the extractive sector. At the same time, the region has experienced high levels of conflicts related to this sector. This paper presents an overview of citizens' perceptions of the extractive industries in Bolivia, Colombia, Ecuador, Peru, and Venezuela. Using a representative sample for each country, we identify regional and country-specific determinants of the Social License to Operate (SLO). The SLO is an unwritten license of social approval accorded to extractive projects by citizens. In this paper, we investigate a generalized version of the SLO, capturing public sentiment toward the mining and the oil and gas sectors in general. While our findings confirm that perceptions vary across countries, we show that governance is the strongest predictor of trust between citizens and the extractive sector, which is consistent with the evidence in the literature. In addition, procedural justice, distributive justice, and nationalism play essential roles in shaping individuals' attitudes. These findings suggest that strengthening government institutions could contribute to the prevention of conflict around extractive industries.


Georesursy ◽  
2021 ◽  
Vol 23 (2) ◽  
pp. 158-169
Author(s):  
Margarita S. Tikhonova ◽  
Anton G. Kalmykov ◽  
Daria A. Ivanova ◽  
Olesia N. Vidishcheva ◽  
Inna O. Khomyachkova ◽  
...  

The article presents the results of hydrocarbon compounds extracted from open pores and blocked by resinous-asphaltene compounds pores in the Tutleim formation rocks (a stratigraphic analogue of the Bazhenov formation) and the underlying Jurassic deposits on the territory of the Kamennaya crest of the Krasnoleninsky arch investigation. The aim of the work was both to study the possible migration of hydrocarbons along the section and area and to assess the variability of the bitumen composition in rocks relative to the structural plan of the area of interest, along the section, as well as unconventional reservoirs. It is shown that the structural features and the assumed additional heating of the rocks lead to variety in the hydrocarbons composition not only in open, but also in blocked pores, both through the area of Tutleim formation distribution and in different intervals of one well. It was established that in the sediments organic matter, which may slightly differ in nature within the formation, can accumulate, and this leads to some differences in the generation, accumulation and migration of hydrocarbon compounds processes. It is shown that the process of migration of hydrocarbons from the underlying sediments also affects the bitumen composition in the rocks of the Tutleim formation.


Author(s):  
Lisa Williams

Scotland is gradually coming to terms with its involvement in slavery and colonialism as part of the British Empire. This article places the spotlight on the lives of African Caribbean people who were residents of Edinburgh during the eighteenth and nineteenth centuries. I discuss their varied experiences and contributions: from runaways and men fighting for their freedom in the Scottish courts to women working as servants in city households or marrying into Edinburgh high society. The nineteenth century saw activism among political radicals from abolitionists to anticolonialists; some of these figures studied and taught at Edinburgh University. Their stories reflect the Scottish capital’s many direct connections with the Caribbean region.


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