page_title: Grantham Formation
hierarchical_section_title: Grantham Formation
caption_attribution_description: English: Sproxton South Quarry Late afternoon sun lighting the limestone rock face. The terraced workings are clearly visible on the shady side of the quarry. There was a layer of ice about one inch thick on the water: tested by throwing stones on it – it took quite a large stone to break the surface.
context_page_description: The Grantham Formation is a geological formation in England, which dates to the Middle Jurassic Aalenian age around 172 million years ago. It is composed of mudstones and sandstone, usually with abundant plant debris. It overlies the preceding Northampton Sand Formation and underlies the following Lincolnshire Limestone.
  It is found from the River Humber to the Kettering/Peterborough area.
context_section_description: The Grantham Formation is a geological formation in England, which dates to the Middle Jurassic Aalenian age around 172 million years ago. It is composed of mudstones and sandstone, usually with abundant plant debris. It overlies the preceding Northampton Sand Formation and underlies the following Lincolnshire Limestone.
  It is found from the River Humber to the Kettering/Peterborough area.
caption: Sproxton Quarry, a Reference Section for the Grantham Formation
exif: {"Image Make": "Canon", "Image Model": "Canon EOS DIGITAL REBEL XT", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS2 Macintosh", "Image DateTime": "2008:02:20 01:10:11", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "236", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "1062", "Thumbnail JPEGInterchangeFormatLength": "4256", "EXIF ExposureTime": "1/125", "EXIF FNumber": "11", "EXIF ExposureProgram": "Aperture Priority", "EXIF ISOSpeedRatings": "200", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2008:02:17 15:26:57", "EXIF DateTimeDigitized": "2008:02:17 15:26:57", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "228255/32768", "EXIF ApertureValue": "453435/65536", "EXIF ExposureBiasValue": "0", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "18", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "640", "EXIF ExifImageLength": "427", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "936", "EXIF FocalPlaneXResolution": "1728000/437", "EXIF FocalPlaneYResolution": "384000/97", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard"}