Cu-ID: https://cu-id.com/2277/v18e06 Redirecciones: 41 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/162 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/162 BibTeX: @article{-, title = {-}, author = {Geoinformativa}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e06}, year = {2025-08-18}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e06}, cu_id = {https://cu-id.com/2277/v18e06}, abstract = {-}, }
Cu-ID: https://cu-id.com/2277/v18e10 Redirecciones: 34 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/166 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/166 BibTeX: @article{Microscopic_study_of_hydrothermal_alteration_in_chromites_from_the_ophiolites_of_the_Havana-Matanzas_region._Cuba, title = {Microscopic study of hydrothermal alteration in chromites from the ophiolites of the Havana-Matanzas region. Cuba}, author = {Cobas Torres, René Yasmany and De La Nuez Colón, Deysy and Pacheco Sarlabous, María de las Nieves Santa Cruz and Torres La Rosa, Mercedes and Echevarría Hernández, Bienvenido T.}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e10}, year = {2025-10-20}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e10}, cu_id = {https://cu-id.com/2277/v18e10}, abstract = {This study characterizes the hydrothermal alteration processes that affected chromites in the ophiolitic units of the Havana-Matanzas region, using optical microscopy techniques such as petrography and mineragraphy. Samples of both chromitites and serpentinized ultramafic rocks with dispersed accessory chromite mineralization were analyzed. The analysis was based on fundamental criteria such as the determination of the optical constants of minerals under transmitted and reflected light, and the relationships between mineral grains. The main results of the work are as follows: the hydrothermal alteration of the analyzed chromites developed in two main phases, both under pressure and temperature conditions equivalent to the greenschist facies and with a low fluid-rock ratio. The first phase, associated with an increase in oxygen fugacity during advanced serpentinization, favored the precipitation of ferritchromite along the edges and fractures of chromite crystals. In the second phase, chromite reacted with the surrounding serpentine, losing Al and Mg, resulting in a residual metallurgical-grade chromite surrounded by a chloritic halo. The presence of uvarovite microcrystals indicates that the mineralizing fluids contained, in addition to Al and Cr, low concentrations of Ca. The results of the study highlight the close link between chromite alteration processes and its composition, which allows these alterations to be evaluated as potential mineralogical indicators applicable in analogous ophiolitic contexts.}, }
Cu-ID: https://cu-id.com/2277/v18e09 Redirecciones: 43 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/165 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/165 BibTeX: @article{Occurrence_of_alteration_processes_in_olivine-gabbros_from_Moa_(Holguín):_the_example_of_the_regolith_in_the_“Centeno”_area, title = {Occurrence of alteration processes in olivine-gabbros from Moa (Holguín): the example of the regolith in the “Centeno” area}, author = {Alonso Pérez, José Antonio and Lavaut Copa, Waldo Damián and Valdivia García, Giselle and Capote Marrero, Carbeny Ramiro and Milia González, Inés}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e09}, year = {2025-10-06}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e09}, cu_id = {https://cu-id.com/2277/v18e09}, abstract = {Results are presented regarding the progress of the weathering process that took place in the gabbro regolith from the "Centeno" sector in Moa (Holguín province), based on calculations of the mafic-ultramafic indices (UMIA) and lateritization (LLI), which allowed its classification as maximum intensity (grade VI). On the other hand, in the interval between 2.00 and 11.50 m depth, the different mineralogical neoformations that were identified in said regolith, through the use of instrumental techniques of chemical and mineralogical analysis available in the country, indicated the presence of kaolinitic clay minerals with a disordered structure at significant contents (61 - 64% m/m), a fact that made it possible to propose the subsequent use of the regolith as a source of Supplementary Cementitious Materials (SCM) for the production of Low Carbon Cement LC3. Another important result of the investigation was the identification of three metasomatic alteration products in the olivine gabbro of the sector in the deeper zones (13.50 - 16.70 m) of the regolith; bowlingite, iddingsite and rodingite, reported for the first time in the cumulative gabbro complex of the "Sagua - Moa - Baracoa" massif, the trioctahedral smectitic clay iron saponite, whose TG-D1TG thermograms resulted in terms of the magnitude of their respective endoeffects, similar to those of a locality in Hungary.}, }
Cu-ID: https://cu-id.com/2277/v18e08 Redirecciones: 41 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/164 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/164 BibTeX: @article{Presence_of_gold_and_silver_minerals_in_the_ores_and_concentrates_of_Cuba, title = {Presence of gold and silver minerals in the ores and concentrates of Cuba}, author = {López Kramer, Jesús Manuel and Alonso Pérez, José Antonio and Pérez Aragón, Ramón Omar}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e08}, year = {2025-09-22}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e08}, cu_id = {https://cu-id.com/2277/v18e08}, abstract = {The analysis of the partial results of interdisciplinary studies developed in specialized journals, data from other authors, as well as modern mineral research techniques, allowed us to provide new data on the substantial composition of the ores, the forms in which the gold and silver concentrating minerals are found, as well as their influence on the concentrates. The detailed study of the chemical composition of the ores and concentrates made it possible to establish the forms of existence in which the precious metals are found, especially the gold and silver concentrating minerals, with implications for metallurgical processing for the technological elaboration of their ores. The mineralogical classification for the standard deposits previously proposed is confirmed and the knowledge about the minerals that concentrate the valuable elements in them is expanded. They are classified as mineralogical types: Florencia AVC: auro-telluridic, Isla de la Juventud Delita Metamorphic Massif: auro-argentiferous-arsenopyrite- sulfoantimonite, Northern Ophiolitic Belt, Descanso- Nuevo Potosí: gold-quartz (or without quartz)-carbonates with arsenopyrite- pyrite. To determine the in primary gold deposits the forms of existence in which the precious metals are found is a valuable information for geological and technological research work are the principal objective of this research.}, }
Cu-ID: https://cu-id.com/2277/v18e07 Redirecciones: 38 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/163 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/163 BibTeX: @article{History_of_the_geological_development_of_Cuba_during_the_late_Cenozoic, title = {History of the geological development of Cuba during the late Cenozoic}, author = {Peñalver Hernández, Leandro Luis and Pajón Morejón, Jesús and Cabrera Castellanos, Miguel and Denis Valle, Roberto Alfonso}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e07}, year = {2025-09-08}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e07}, cu_id = {https://cu-id.com/2277/v18e07}, abstract = {This paper presents the geological development history of Cuba during the Late Cenozoic, beginning in the Late Miocene and covering the entire Quaternary. In the first stage, encompassing the Late Miocene and Pliocene, Cuba's total land area was larger than it is today. It is estimated that during this period there were almost no marine transgressions affecting the emerged territory. In a second stage, linked to the Quaternary, a series of glacio-eustatic transgressions and regressions of sea level are recognized, associated with the glaciations and interglacials recognized globally for this period. During this second stage, a radical change occurred in Cuba's climate, characterized by an initial, wetter phase and a subsequent, drier phase. The boundary between these two phases appears to coincide with the Brunhes/Matuyama paleomagnetic inversion, which occurred 780,000 years ago. The wetter phase is associated with the Early Pleistocene, and the drier phase with the Middle-Late Pleistocene. Several paleogeographic schemes for the Cuban territory are presented, linked to different transgressions, and the general characteristics that predominated in each case are described.}, }
Cu-ID: https://cu-id.com/2277/v18e05 Redirecciones: 25 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/159 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/159 BibTeX: @article{Fauna_of_vertebrates_quaternary_present_in_paleontological_and_archaeological_contexts_of_Cuba, title = {Fauna of vertebrates quaternary present in paleontological and archaeological contexts of Cuba}, author = {Arredondo Antúnez, Carlos}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e05}, year = {2025-03-10}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e05}, cu_id = {https://cu-id.com/2277/v18e05}, abstract = {As a result of this monographic study of the geology of the Cuban Quaternary, this paper presents a contribution to the specific knowledge of the Cuban vertebrate fauna that lived during the Quaternary. The objective was to characterize the composition of the vertebrate fauna, mostly terrestrial, found at duly identified paleontological and/or archaeological sites, which the author considers valid. Documentary research, a review of bone material in collections, and the author's experience were the fundamental elements in the preparation of this study. The paleobiogeographical evolution of the Caribbean region supports diverse analyses of the Cuban vertebrate fauna; rodents, sloths, and primates have Caribbean affinities in their evolution; soricomorphs have northern ancestors, and an avian fauna with migrations yet to be fully elucidated; mammals and birds are the groups that provide the most comprehensive osteological and biogeographical studies. The arrival of Aboriginal people in Cuba has left its mark on the diet they used as a resource, which is a subject of increasing archaeological study in our country. The Quaternary vertebrate fauna, recorded at paleontological and archaeological sites, included fish (chondrichthyans and osteichthyans), amphibians, reptiles, birds, and mammals. These last two groups are the most abundant in the record, coinciding with their abundance and diversity in the past. The Quaternary was undoubtedly an important period for our vertebrate fauna, primarily terrestrial, as processes of migration, vicariance, speciation, and even extinction occurred, linked to the geological and environmental processes of the moment.}, }
Cu-ID: https://cu-id.com/2277/v18e04 Redirecciones: 24 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/158 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/158 BibTeX: @article{The_igneous_activity_of_the_paleogene_in_cretaceous_terrains_of_eastern_central_Cuba_(Part_one), title = {The igneous activity of the paleogene in cretaceous terrains of eastern central Cuba (Part one)}, author = {Lugo-Primelles, René}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e04}, year = {2025-02-24}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e04}, cu_id = {https://cu-id.com/2277/v18e04}, abstract = {The conception of the existence of Paleogene igneous activity in central-eastern Cuba, which has been reflected for the first time on a map of the region, dates back to the execution and analysis of the results of the 1:100 000 scale geological survey and its accompanying searches in the southern part of the then-called Camagüey Anticlinorium in the Martí-Victoria de Las Tunas region, completed in 1976. This was due both to the observation and analysis of field data and to the production of information prior to the document cited above. The detailed review of the information was obtained from the 1964 book Geología de Cuba and other earlier and later materials, which emphasize that these considerations had already been previously analyzed by other geologists (including some foreign ones). The existence of Paleogene magmatism within the boundaries of the Ciego de Ávila-Camagüey-Las Tunas territory is highlighted, based on geological and paleontological studies, in addition to the results of radiometric and mineralization studies collected at that time. The study presented confirms the continued existence of magmatism, which, according to current data, extends to the Eocene–Ypresian (Bartonian). For this reason, the upper part of the history of the development of magmatism in Central Eastern Cuba must be rewritten.}, }
Cu-ID: https://cu-id.com/2277/v18e03 Redirecciones: 43 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/157 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/157 BibTeX: @article{Characterization_and_cartographic_representation_at_1/25_000_scale_of_the_upper_endorheic_part_of_the_almendares-vento_endorheic_part_of_the_almendares-vento_basin, title = {Characterization and cartographic representation at 1/25 000 scale of the upper endorheic part of the almendares-vento endorheic part of the almendares-vento basin}, author = {Alonso-Montero, Raydel}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e03}, year = {2025-02-03}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e03}, cu_id = {https://cu-id.com/2277/v18e03}, abstract = {The upper endorheic part of the Almendares-Vento basin is one of the most important hydrological and karst regions in Cuba, since it contains most of the main subway recharge routes to the Vento aquifer, the main source of drinking water supply to the Cuban capital. As part of the research projects that the Institute of Geology and Paleontology carries out in the different sub-basins of the Almendares river basin, the study of this upper endorheic sub-basin was carried out, introducing for the first time the geomorphological study and its cartographic representation for this sector at a detailed scale 1/25 000, which reviews from the chronomorphogenetic point of view the complex of types and forms of the relief of the territory, taking as a basis the survey of the old Havana provinces realized of Portela. Thus, it offers the classification of the surfaces by relief category, altitudinal floor, endogenous genesis of the orographic units; as well as the analysis of the active morphostructures of the original relief and the modified lithostructures, their forms of expression, the exogenous processes that gave rise to the present relief and the ages of the surfaces. This work is therefore a useful tool in the geoenvironmental study of the Almendares-Vento basin and specifically of its upper part, and it is expected to serve as a first step to extend this type of survey to the entire general hydrological unit, with a view to carrying out deeper and more advanced geomorphological and hydrological studies of the karst.}, }
Cu-ID: https://cu-id.com/2277/v18e02 Redirecciones: 38 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/155 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/155 BibTeX: @article{Geophysical-morphometric_interpretation_in_support_of_the_geological_mapping_of_sheet_3885-II,_Matanzas,_Cuba, title = {Geophysical-morphometric interpretation in support of the geological mapping of sheet 3885-II, Matanzas, Cuba}, author = {Pardo Echarte, Manuel E.}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e02}, year = {2025-01-15}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e02}, cu_id = {https://cu-id.com/2277/v18e02}, abstract = {As a rule, field geological observations supplemented by remote sensing information are insufficient for the purposes of subsurface geological mapping of a territory, particularly when its structural framework is very complex. In these cases, the assistance of geophysical-morphometric interpretation is essential. In this sense, it is known that potential fields help in the structural-tectonic deciphering of the territory and, to a lesser extent, in the lithological mapping of the different geological units present, with the inverse contribution of airborne gamma spectrometry. The objective of the research was to support the geological mapping of the area with an integrated geophysical-morphometric interpretation. The materials used were: gravimetric and aeromagnetic field grids at scales of 1:50 000 and airborne gamma spectrometry at scale of 1:100 000 of the Republic of Cuba; Digital Elevation Model (90x90 m) of the Republic of Cuba and Digital Geological Map at a scale of 1: 100 000 of the Republic of Cuba. The methods used were gravimetry; aeromagnetometry; non-conventional morphometry and aerial gamma spectrometry. As a result of the investigation, the subsurface geological structure (~ 500 m) of the territory was mapped from the integrated gravi-magnetic and morphometric interpretation. In addition, the surface lithological composition was established and mapped from the radioactive nature of the residual soils. Thus, the following are recognized: structural depressions, tectonic limits, a possible uplift of rocks of the North American Continental Margin, presence of volcanic + ophiolites with a depressed macro structure and the presence of rocks with potassium feldspar contents, clays, carbonates with phosphatization and serpentinites.}, }
Cu-ID: https://cu-id.com/2277/v18e01 Redirecciones: 24 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/154 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/154 BibTeX: @article{Analysis_of_the_rate_of_change_and_forecast_of_the_future_coast_in_Playa_las_Canas,_Pinar_del_Río, title = {Analysis of the rate of change and forecast of the future coast in Playa las Canas, Pinar del Río}, author = {Ross Cabrera, Hassan and Rodríguez Barrera, Rosangela}, journal = {Geoinformativa}, volume = {18}, number = {}, pages = {https://cu-id.com/2277/v18e01}, year = {2025-01-15}, publisher = { Instituto de Geología y Paleontología/Servicio Geológico de Cuba}, language = {spa}, url = {https://cu-id.com/2277/v18e01}, cu_id = {https://cu-id.com/2277/v18e01}, abstract = {The objective of this research was to forecast the future coastline in order to determine how much land will be gained or lost in 32 years. For this purpose, a multi-temporal study of the coastline between 1956 and 2021 was carried out, using satellite images and aerial photographs. Using QGIS software tools, the rate of variation of the coastline was determined by applying the Extreme Profile Rate of Change (EPR) method, which was determined by dividing the time span by the displacement of the coastline in that time, i.e. 65 years. For the projection of the coastline, the Simple Linear Regression (LRR) method was applied, thus obtaining a range of displacement of the line within 32 years. The results obtained showed the existence of a maximum erosion rate of -0.32 m/year, and a maximum accretion rate of 0.51 m/year, revealing a predominance of cumulative processes (accretion). The LRR method revealed a range of displacement from 1.84m to 18.27m with Standard Error of Estimate (LSE) values ranging from 1.17 to 7.7, with an exception at transect 13 of 12.13. A series of graphs and maps were also obtained that allow a better appreciation of future shoreline displacement both qualitatively and quantitatively.}, }
