Description of facies of the Suretka Formation near Siquirres and his relation with depositional environments
Descripción de facies de la Formación Suretka en los alrededores de Siquirres y su relación con ambientes de depositación
| dc.creator | Vargas, Asdrúbal | |
| dc.creator | Salazar, Jorge | |
| dc.creator | Barrantes, Manuel | |
| dc.date | 2017-09-05 | |
| dc.date.accessioned | 2023-08-03T19:10:40Z | |
| dc.date.available | 2023-08-03T19:10:40Z | |
| dc.identifier | https://revistas.ucr.ac.cr/index.php/geologica/article/view/30149 | |
| dc.identifier | 10.15517/rgac.v0i57.30149 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7905521 | |
| dc.description | In this work is presented a description of sedimentary facies identified for the Suretka Formation near the town of Siquirres, Limón. The description was carry out with the inspections of underground excavations, outcrops in creeks, shafts, and boreholes during the construction stage of the Reventazón Hydroelectric power plant. It was identified three sedimentary facies: conglomerate facies, sandstone lenses with fine to very fine conglomerate and tuff lenses facies. The conglomerate facies is characterized by igneous blocks sumerged in a loam sandy matrix. In general can be found in this facies metric to decametric bedding with bad gradation. By the other side facies of sandstone lenses and fine conglomerates are described as strata of the centimeter order with presence of both parallel and cross laminations in sandstone lenses and reverse and normal gradations in fine conglomerate lenses. The facies analysis allows the identification of an environment of subareal deposition associated with alluvial fans. For the facies of conglomerates, a proximal alluvial fan environment is established and for the facies of lenses of sandstones and intercalations of fine to very fine conglomerates a environment of medium alluvial fan with meandering sedimentary processes like longitudinal or point bars. | en-US |
| dc.description | Se presenta la descripción de facies de la Formación Suretka en los alrededores de la localidad de Siquirres, Limón. Dicha descripción se realizó por medio de la inspección de quebradas, taludes, obras subterráneas y perforaciones realizadas durante la construcción de la planta hidroeléctrica Reventazón. Se identificaron tres facies sedimentarias: facies de conglomerados, facies de lentes de areniscas e intercalaciones de conglomerados finos-muy finos y facies de lentes de toba. Las facies de conglomerado se caracteriza por la presencia de bloques de origen ígneo inmersos en una matriz limo arenosa. Por lo general se presentan estratos métricos hasta decamétricos mal gradados. Por el contrario las facies de lentes de areniscas y conglomerados finos se describen como estratos del orden centimétrico con presencia de laminaciones tanto paralela como cruzada en los lentes de arenisca y gradaciones inversas y normales en los lentes de conglomerado fino. El análisis de las facies permite identificar un ambiente de depositación subáereo asociado a abanicos aluviales.Para las facies de conglomerados se establece un ambiente de abanico aluvial proximal y para las facies de lentes de areniscas e intercalaciones de conglomerados finos-muy finos un ambiente de abanico aluvial medio con procesos sedimentarios meándricos tipo barras longitudinales o de punto. | es-ES |
| dc.format | application/pdf | |
| dc.language | spa | |
| dc.publisher | Universidad de Costa Rica | es-ES |
| dc.relation | https://revistas.ucr.ac.cr/index.php/geologica/article/view/30149/30408 | |
| dc.rights | Derechos de autor 2017 Revista Geológica de América Central | es-ES |
| dc.source | Revista geológica de América central; Vol. 57 (2017) | en-US |
| dc.source | Revista geológica de América central; Vol. 57 (2017) | es-ES |
| dc.source | 2215-261X | |
| dc.source | 0256-7024 | |
| dc.subject | conglomerade | en-US |
| dc.subject | sedimentary structure | en-US |
| dc.subject | sedimentation environment | en-US |
| dc.subject | lamination | en-US |
| dc.subject | sandy lenses | en-US |
| dc.subject | facies | es-ES |
| dc.subject | conglomerado | es-ES |
| dc.subject | Formación Suretka | es-ES |
| dc.subject | cuenca Limón Sur | es-ES |
| dc.subject | Plioceno | es-ES |
| dc.title | Description of facies of the Suretka Formation near Siquirres and his relation with depositional environments | en-US |
| dc.title | Descripción de facies de la Formación Suretka en los alrededores de Siquirres y su relación con ambientes de depositación | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | Article | es-ES |