Cu-ID: https://cu-id.com/2277/2222-6621 Redirecciones: 204 URL: https://rgi.edicionescervantes.com/index.php/rgi/ OAI: Error al obtener el ID del artículo. BibTeX: Error al realizar la solicitud OAI.
Cu-ID: https://cu-id.com/2277/v17e01 Redirecciones: 120 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/6 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/6 BibTeX: @article{Reddish-violaceous_limestone_with_gastropods_within_the_cretaceous_vulcanites_at_Sierra_de_Najasa,_south_of_Camaguey,_Eastern-Central_Cuba, title = {Reddish-violaceous limestone with gastropods within the cretaceous vulcanites at Sierra de Najasa, south of Camaguey, Eastern-Central Cuba}, author = {Rojas Consuegra, Reinaldo and Piñero Pérez, Enrique C. and Pérez Peña, María Victoria and Blanco Bustamante, Silvia and Hernández León, José}, journal = {Geoinformativa}, volume = {17}, number = {}, pages = {https://cu-id.com/2277/v17e01}, year = {2024-09-16}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v17e01}, cu_id = {https://cu-id.com/2277/v17e01}, abstract = {Red, reddish-gray to violet, sandy and fossiliferous limestones were studied, related to the sequences of the Cretaceous volcanic arc complex in the town of San Agustín, Sierra de Najasa region, province of Camagüey. The area in question is relatively little studied. The objective of the work is to present the detailed characterization of the fossiliferous rocks collected, and to draw attention to these detrital, calcareous and siliciclastic facies, associated with the sedimentary basins developed during the evolution of the Cretaceous volcanic arc complex. The review, sampling of outcrops, identification of textures and microfossils under the microscope, allowed for a more in-depth analysis of the association found, particularly rich in gastropods. The microfossil association, mainly foraminifera, identified in the sandy red-violet limestone (bioclastic grainstone - sandy intraclastic), indicates an age from early Cretaceous Albian to late Cretaceous Cenomanian. However, the presence of acteonellid gastropods is comparable to similar facies known from the Piragua Formation (K2t-cp), a locality where it unconformably covers the Camujiro Formation (K2cm-co). However, the diversity and abundance of gastropods (turritelids, nerineids, naticids and others) suggests a possibly younger deposit, perhaps, of Santonian(?) to Campanian age. The presence of bitumen in styloliths, in a gapy texture, processes of pyritization and oxidation by weathering, which induced the notable red color in these lithologies, denotes a possible migration of hydrocarbon fluids through faults, from some parent rock located in the depth, in this region of the Cuban Southern Oil Province.}, }
Cu-ID: https://cu-id.com/2277/v17e02 Redirecciones: 127 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/133 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/133 BibTeX: @article{Assessments_on_the_progress_of_weathering_in_the_gabbro_regolith_of_the_"Cayo_Guam"_sector_in_Moa_(Holguin_province), title = {Assessments on the progress of weathering in the gabbro regolith of the "Cayo Guam" sector in Moa (Holguin province)}, author = {Alonso Pérez, José Antonio and Lavaut Copa, Waldo Damián and Valdivia García, Giselle and Torres La Rosa, Mercedes and Milia González, Inés and Capote Marrero, Carbeny Ramiro and Cazañas Díaz, Xiomara and Alonso Rodríguez, Rafael Antonio}, journal = {Geoinformativa}, volume = {17}, number = {}, pages = {https://cu-id.com/2277/v17e02}, year = {2024-02-18}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v17e02}, cu_id = {https://cu-id.com/2277/v17e02}, abstract = {Results of chemical and mineral composition in the gabbro regolite sampled in an area of the "Cayo Guam" sector of the Moa region are presented, with the objective of determining the intensity, classification of the weathering process and determination of the thickness of useful clay mineral in the regolite, respectively. As research methods, the following indexes were used: chemical alteration index (CIA) and mafic-ultramafic index (UMIA), which allowed classifying this weathering event as of extreme intensity (grade VI; UMIA = 41.09 - 94.07%; CIA = 56.43 - 96.56%). The mineral composition of the regolith was also determined using three variants of Thermogravimetric Analysis, showing the presence of mixtures of kaolinitic clays of disordered structure and halloysite, minerals that can be seen from the deepest levels of the regolith, classifying it as simple sialitic (kaolinitic), a process that culminated with lateritization-alitization and simultaneous formation of alkali blocks of gibbsite composition that are finally observed in the superficial zone of the profile (IOL: 79. 21 - 79.78%). The results obtained are considered similar to those obtained by other researchers in the region itself, and therefore indicate that the regolith of the investigated sector, given the useful thickness of the kaolinitic layer (0.5 - 16.30 m), presents good potential for its use as a source of supplementary cementitious materials and in the manufacture of refractory elements for red ceramics.}, }
Cu-ID: https://cu-id.com/2277/v17e03 Redirecciones: 103 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/134 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/134 BibTeX: @article{Caona_and_Guanín._How_gold_became_part_of_our_culture, title = {Caona and Guanín. How gold became part of our culture}, author = {López Kramer, Jesús Manuel and Izquierdo Díaz, Gerardo}, journal = {Geoinformativa}, volume = {17}, number = {}, pages = {https://cu-id.com/2277/v17e03}, year = {2024-01-22}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v17e03}, cu_id = {https://cu-id.com/2277/v17e03}, abstract = {It is known that the human groups that populated the Antillean arc did not master the casting techniques necessary to produce pieces or alloys with gold, since they were societies that were passing through the Stone Age. There is also no archaeological data on the existence of primary furnaces where such a process could be carried out, so it is inferred that the possible origin of guanin and some very simple pieces seen among the island tainos, have been obtained from the simple processing of minerals. natives of their environment, and the most elaborate ones, from contact with groups of continental societies, who did know the rudiments of metal work. National investigations that relate different sciences such as the present one are not frequent. The compilation and analysis of partial results of interdisciplinary studies developed by their authors, publications in specialized journals and data from other authors provide a more holistic vision of geological research and the archaeological record related to the topic of gold, which intentionally blurs the borders between the natural and exact sciences and the social and humanistic sciences. It is concluded that in Cuba there are spatial and geological relationships between the presence of minerals such as gold, guanin (copper gold), native copper and other metals with the regions where there were indigenous population settlements in which these metals have been found with the rocks and sediments from the Northern Ophiolitic Association.}, }
Cu-ID: https://cu-id.com/2277/v17e04 Redirecciones: 118 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/135 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/135 BibTeX: @article{The_epithermal-porphyritic_system_of_Au-Cu_San_Nicolás_-_El_Pilar_-_Gaspar,_Ciego_de_Ávila,_Cuba, title = {The epithermal-porphyritic system of Au-Cu San Nicolás - El Pilar - Gaspar, Ciego de Ávila, Cuba}, author = {Lugo-Primelles, René}, journal = {Geoinformativa}, volume = {17}, number = {}, pages = {https://cu-id.com/2277/v17e04}, year = {2024-02-05}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v17e04}, cu_id = {https://cu-id.com/2277/v17e04}, abstract = {With the present article we have considered to demonstrate the telescopic character of the low sulphidation epithermal-porphyry type of the San Nicolás-El Pilar-Gaspar gold and copper mineralized system, considered until now as of high sulphidation epithermal, originally known as a result of the 1988 work on terrestrial verification of aeromagnetic and geochemical anomalies in the Gaspar sector, Ciego de Ávila Province. In addition to these, there are three other research stages, between 1995-1998, 2002-2003 and a current one from 2022 to the present. The objective of the study is based on the updating of current real knowledge and the generalization of the results obtained to conclude on the type of expected deposits. The descriptive method of scientific research has been applied, which is based on the review, analysis, synthesis and generalization of the available geological information, on the establishment of geological, geochemical, geophysical conditions and mineral alterations and metallic mineralization. The level of knowledge reached, allows to establish the presence of a group of porphyry intrusions that show an epithermal - porphyry telescopic assembly, where the epithermal facies is of the low sulphidation type interpreted as of gold - copper bonanza type. This system potentially extends for 9-10 Km in a NW-SE direction, and depths of 500-800 m to the porphyry, in the vicinity of outcrops partially covered for younger sediments, with hypabyssal - subintrusives acidic to intermediate bodies, embedded in volcano-sedimentary sequences of the Caobilla Fm, from the Upper Cretaceous Coniacian - Campanian.}, }
Cu-ID: https://cu-id.com/2277/v17e07 Redirecciones: 103 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/138 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/138 BibTeX: @article{Cold_corals._Review_of_traditional_concepts_about_these_organisms, title = {Cold corals. Review of traditional concepts about these organisms}, author = {Cabrera Castellanos, Miguel}, journal = {Geoinformativa}, volume = {17}, number = {}, pages = {https://cu-id.com/2277/v17e07}, year = {2024-01-22}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v17e07}, cu_id = {https://cu-id.com/2277/v17e07}, abstract = {According to updated scientific information, coral formations are not only found in tropical shallow waters, but also in cold waters of different depths and latitudes. The objective of this work is to deal with the specific conditions in which they develop, according to the results of published reports and their discovery in the Cuban exclusive economic zone (EEZ) in the Gulf of Mexico. They are found in an aphotic environment, at atmospheric pressure up to more than 5 t/cm2, low oxygenation and temperatures up to about 0˚C. Other conditions may be gas emanations, exploited by corals for their nutrition and the construction of a hard substrate for their settlement, through the oxidation of methane thanks to their symbiosis with chemosynthetic bacteria. They inhabit almost all the seas and oceans of the world. In the Cuban EEZ they were discovered at a depth of more than 1500 m, with evidence of gas emanations. The importance from the geological point of view of cold corals lies in: 1) their relationship with gas emanations, being an indication for the prospection of gas hydrates, with volumes of methane gas, estimated between 2.1 x 1016 and 4 x 1016 m3, almost twice the total world commercial methane (2.5 x 1014 m3 ) and carbon equivalent to all known deposits of fossil fuels and 2) they break with the rule of associating the presence of corals, exclusively, with requirements for their development typical of tropical neritic seas.}, }
Cu-ID: https://cu-id.com/2277/v17e08 Redirecciones: 120 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/139 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/139 BibTeX: @article{Falcon_Paleogenic_Formation._Review_and_redescription_proposal, title = {Falcon Paleogenic Formation. Review and redescription proposal}, author = {Pérez Aragón, Ramón Omar}, journal = {Geoinformativa}, volume = {17}, number = {}, pages = {https://cu-id.com/2277/v17e08}, year = {2024-05-11}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v17e08}, cu_id = {https://cu-id.com/2277/v17e08}, abstract = {The lithostratigraphic unit called the Falcon formation was described for the first time by the American geologist Paul Truitt, in an unpublished geological report from 1954, resulting from research led by Brönnimann and Pardo. It was redefined by Popov, during the survey of Central Cuba at a scale of 1: 250,000, carried out in 1978. It was validated and incorporated into the Stratigraphic Lexicon of Cuba from the first versions. The review of this Paleogene unit, to update the lexicon, revealed several insufficiencies in its description, fundamentally, the incomplete state of some of the fields described, deficiencies noted in all the published versions and carried over to the one currently in force. The consultation of archival geological materials was carried out, especially the report of the conditional geological survey at a scale of 1: 50,000, Las Villas II or Jíbaro-Báez carried out in 1989 by a Cuban-Bulgarian Brigade, led by Vasiliev, with the objective of completing and improve the quality of information. Despite not constituting a new stratigraphic work per se, the review of archival materials provided data that allows a more complete description, which led to a proposal to redefine the Falcon formation to be submitted to the criteria of the Paleogene Commission. of the Stratigraphic Lexicon of Cuba for approval.}, }
Cu-ID: https://cu-id.com/2277/v17e05 Redirecciones: 97 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/136 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/136 BibTeX: @article{Critical_raw_matters,_deposits_models_and_mineral_systems, title = {Critical raw matters, deposits models and mineral systems}, author = {Torres Zafra, Jorge Luis and Cazañas Díaz, Xiomara}, journal = {Geoinformativa}, volume = {17}, number = {}, pages = {https://cu-id.com/2277/v17e05}, year = {2024-01-22}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v17e05}, cu_id = {https://cu-id.com/2277/v17e05}, abstract = {Critical raw materials, or critical minerals, constitute a set of raw materials of increasing importance for the economy and society on a global scale. They are obtained from the subsoil as a result of geological exploration and mining. Therefore, it is important to show the link between them, the types of mineral deposits where they are found and the mineral systems of which the latter are part. Finally, the objective is to present the main mineral systems that carry critical raw materials in Cuba and their spatial distribution in the national territory. As a result of the bibliographic search, systematization and generalization of the information collected on critical raw materials, a generalized list of them and some basic facts related to the concept of critical raw materials are presented. The relationship between the geology of critical minerals and the supply chain is exposed, and how they are distributed by mineral deposit models and mineral systems on a global scale is shown. In this context, the main mineral systems carrying them in Cuba are exposed, as well as their location within the country. It is concluded that the distribution of geological resources (evaluated and potential to be discovered) of critical raw materials in Cuba are concentrated in four mineral systems. Of them, the most promising, due to the magnitude of its richness in ore resources, is the supergene mineral system, carrier of Ni, Co, Sc, Cr, EGP and ETR.}, }
Cu-ID: https://cu-id.com/2277/v17e06 Redirecciones: 113 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/140 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/140 BibTeX: @article{Petrophysical_characterization_of_tertiary_sequences_in_western_Cuba, title = {Petrophysical characterization of tertiary sequences in western Cuba}, author = {Rodríguez Martínez, Norma}, journal = {Geoinformativa}, volume = {17}, number = {}, pages = {https://cu-id.com/2277/v17e06}, year = {2024-02-02}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v17e06}, cu_id = {https://cu-id.com/2277/v17e06}, abstract = {The definition of new potential areas where to apply secondary recovery methods based on the results in layer M (Boca de Jaruco reservoir), imposed the need to reanalyze the mentioned territory. The research had as objective the petrophysical characterization by cores of the Tertiary sediments in the study region (Pinar del Río, Artemisa, Havana, Mayabeque and Matanzas). The petrophysical determinations of carbonate content, porosity and maximum probable saturation of hydrocarbons were analyzed, as well as the superficial manifestations and in wells up to 1000m in the north of these provinces. The large amount of hydrocarbon occurrences was evidenced in the Tertiary sequences, although occurrences in Cretaceous and older rocks were also reported. The degree of petrophysical study by cores from the wells drilled in this region, where we have parameter determinations, is significantly limited. A total of 284 cores from 157 wells were analyzed and porosity and hydrocarbon saturation maps were constructed considering the carbonatosity of the samples. The best values in carbonates were observed: for porosity in the wells of Mayabeque province and in the Cantel-Camarioca wells of Matanzas province, for maximum probable oil saturation (Sp=1-Sar) in Pinar del Rio and Matanzas (east of Varadero reservoir), average values in Pinar del Rio (Puerto Esperanza) and in Matanzas (near Camarioca reservoir). In the non-carbonate rocks, a more regular but not very representative distribution was observed.}, }
Cu-ID: https://cu-id.com/2277/v14n1e31 Redirecciones: 88 URL: https://rgi.edicionescervantes.com/index.php/rgi/article/view/31 OAI: https://rgi.edicionescervantes.com/index.php/rgi/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/31 BibTeX: @article{SUMMARIES_OF_COMPANY_PROJECTS_APPROVED_AT_THE_CCT_IGP/SGC, title = {SUMMARIES OF COMPANY PROJECTS APPROVED AT THE CCT IGP/SGC}, author = {Karell Arrechea , Dinorah Natividad}, journal = {Geoinformativa}, volume = {14}, number = {1}, pages = {73-78}, year = {2021-06-03}, publisher = {Instituto de Geología y Paleontología}, language = {spa}, url = {https://cu-id.com/2277/v14n1e31}, cu_id = {https://cu-id.com/2277/v14n1e31}, abstract = {}, }
