File:Fachada de esquisto y gneis Ollo de sapo.001 - Geolodía Monfero 2024.jpg
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[edit]DescriptionFachada de esquisto y gneis Ollo de sapo.001 - Geolodía Monfero 2024.jpg |
Español: Fachada de una casa, hecha de esquisto y gneis de la formación Ollo de Sapo. Son rocas metamórficas; en el caso de este gneis, de origen magmática (es decir, un ortogneis). Este se formó a partir de materiales ácidos expulsados por un conjunto de volcanes submarinos (de hace 475 millones de años) que se extendieron desde el norte de Galicia hasta la Sierra de Guadarrama. El nombre era conocido por los habitantes de la zona, y fue citado por Hernández Sampelayo en 1922. Isidro Parga Pondal indicó en 1964 que el nombre era debido a los porfiroclastos (cristales) azulados de cuarzo comunes en los porfiroides de bajo grado (una de las facies de la formación); también incluye grandes porfiroblastos de feldespato, que debido a su tamaño, a veces sobresalen de la matriz debido a la erosión de esta.
Foto realizada durante el Geolodía 2024 en Rioseco, Monfero (A Coruña, Galicia, España).
Galego: Fachada dunha casa, feita de xisto e gneis da formación Ollo de Sapo. Son rochas metamórficas; no caso de este gneis, de orixe magmática (é dicir, un ortogneis). Este formouse a partir de materiais ácidos expulsados por un conxunto de volcáns submariños (de hai 475 millóns de anos) que se extenderon desde o norte de Galicia ata a Serra de Guadarrama. O nome era coñecido polos habitantes da zona, e foi citado por Hernández Sampelayo en 1922. Isidro Parga Pondal indicou en 1964 que o nome era debido aos porfiroclastos (cristais) azulados de cuarzo comúns nos porfiroides de baixo grao (unha das facies da formación); tamén inclúe grandes porfiroblastos de feldespato, que debido ao seu tamaño, ás veces sobresaen da matriz debido á erosión de esta.
Foto realizada durante o Xeolodía 2024 en Rioseco, Monfero (A Coruña, Galicia, España). |
Date | |
Source | Own work |
Author | Fernando Losada Rodríguez |
Camera location | 43° 18′ 53.14″ N, 8° 01′ 03.68″ W | View this and other nearby images on: OpenStreetMap | 43.314762; -8.017690 |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 08:53, 21 May 2024 | 4,000 × 2,250 (4.89 MB) | Drow male (talk | contribs) | Uploaded own work with UploadWizard |
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This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera model | moto g(60) |
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Camera manufacturer | motorola |
Date and time of data generation | 18:38, 11 May 2024 |
Exposure time | 1/100 sec (0.01) |
F-number | f/1.9 |
ISO speed rating | 200 |
Lens focal length | 6.03 mm |
Vertical resolution | 72 dpi |
Horizontal resolution | 72 dpi |
Width | 4,000 px |
Height | 2,250 px |
Y and C positioning | Centered |
Orientation | Normal |
File change date and time | 18:38, 11 May 2024 |
Exif version | 2.2 |
APEX aperture | 1.85 |
Scene type | 0 |
APEX exposure bias | 0 |
Exposure Program | Not defined |
Color space | sRGB |
Maximum land aperture | 1.85 APEX (f/1.9) |
APEX brightness | 0 |
Supported Flashpix version | 1 |
DateTimeOriginal subseconds | 404082 |
White balance | Auto white balance |
Exposure mode | Auto exposure |
Flash | Flash did not fire, auto mode |
DateTime subseconds | 404082 |
Meaning of each component |
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Focal length in 35 mm film | 0 mm |
DateTimeDigitized subseconds | 404082 |
Digital zoom ratio | 1 |
Date and time of digitizing | 18:38, 11 May 2024 |
APEX shutter speed | 6.643 |
Metering mode | Average |
Scene capture type | Standard |
Light source | D65 |
Sensing method | 0 |