{ "currentVersion": 10.81, "id": 21, "name": "Precambrian", "type": "Feature Layer", "description": "Great Ice sheets have covered parts of Ontario several times, most recently during the Quaternary Period. This most recent glaciation has played a major role in shaping and creating the physical landscape of Ontario. The deposits and effects of these glaciations are widespread with till being the most common deposit left by the Laurentide Ice Sheet. Three main end members of till were produced, sandy tills from the erosion of Precambrian rocks; silty tills derived from the erosion of carbonate rocks and clayey tills deposited in front of the glacier in local or regional area of ponding. Considerable volumes of melt water were generated by, and discharged from, the glaciers that once occupied Ontario. Large amounts of glacial debris were transported by the meltwater and deposited as stratified sediments under the glacier and along the ice margin (glaciofluvial ice-contact deposits), and beyond the ice margin in rivers and streams (glaciofluvial outwash deposits), lakes (glaciolacustrine and lucustrine deposits ) and seas (glaciomarine and marine deposits). The Quaternary Geology Data Set is a digital interpretation of this Surficial Geology for the Province of Ontario, illustrating the general distribution of the various types of Quaternary sediments and the major landforms associated with them. Glacial tills, fluvial, lacustrine and organic deposits are illustrated as 30 distinct structured geological units illustrating the Quaternary stratigraphy of Ontario. Also shown are landform deposits such as drumlins, moraines, eskers, sand dunes, and glacial related escarpments.\nThis data set serves to provide a detailed overview of Quaternary geology in Ontario available to the environmental, construction and development community as well as government geoscientists, urban and regional planners and academic researchers. Also, the dataset will be of value to secondary school teachers, and members of the media and general public who have an interest in Ontario's glacial and surficial geological history. \n<> Ontario Geological Survey. 1997.  Quaternary geology, seamless coverage of the province of Ontario: Ontario Geological Survey, Data Set 14\n <> The Government of Ontario makes no representation or warranty that the contents contained in this program is current, complete and accurate. \n--//-- De grandes nappes glaciaires ont recouvert des parties de l'Ontario à plusieurs reprises, plus récemment au cours de la période quaternaire. Cette dernière glaciation a joué un rôle majeur dans le façonnement et la création du paysage physique de l'Ontario. Les dépôts et les effets de ces glaciations sont très répandus, le till étant le dépôt le plus courant laissé par l'inlandsis laurentidien. Trois principaux types de tills ont été produits : les tills sableux issus de l'érosion des roches précambriennes, les tills silteux dérivés de l'érosion des roches carbonatées et les tills argileux déposés à l'avant du glacier dans des zones locales ou régionales d'accumulation d'eau. Des volumes considérables d'eau de fonte ont été générés et évacués par les glaciers qui occupaient autrefois l'Ontario. De grandes quantités de débris glaciaires ont été transportés par les eaux de fonte et se sont déposés sous forme de sédiments stratifiés sous le glacier et le long de la marge glaciaire (dépôts glacio-fluviaux en contact avec la glace), et au-delà de la marge glaciaire dans les rivières et les ruisseaux (dépôts fluvioglaciaires), les lacs (dépôts glacio-lacustres et lucustres) et les mers (dépôts glaciomarins et marins). Le jeu de données sur la géologie du Quaternaire est une interprétation numérique de cette géologie de surface pour la province de l'Ontario, illustrant la distribution générale des différents types de sédiments du Quaternaire et les principales formes de relief qui leur sont associées. Les tills glaciaires, les dépôts fluviaux, lacustres et organiques sont illustrés sous forme de 30 unités géologiques structurées distinctes illustrant la stratigraphie quaternaire de l'Ontario. On y trouve également des dépôts de relief tels que des drumlins, des moraines, des eskers, des dunes de sable et des escarpements d'origine glaciaire.\nCe jeu de données fournit un aperçu détaillé de la géologie du Quaternaire en Ontario aux spécialistes de l'environnement, de la construction et du développement, ainsi qu'aux géoscientifiques du gouvernement, aux planificateurs urbains et régionaux et aux chercheurs universitaires. Il sera également utile aux enseignants du secondaire, aux médias et au grand public qui s'intéressent à l'histoire géologique glaciaire et superficielle de l'Ontario.\n <> Veuillez noter: la base de données est disponible en anglais seulement.\nOntario Geological Survey. 1997. Quaternary geology, seamless coverage of the province of Ontario: Ontario Geological Survey, Data Set 14\n <> Le gouvernement de l'Ontario ne fait aucune déclaration ni ne garantit que le contenu contenu dans ce programme est à jour, complet et exact. 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Sauf indication contraire,© imprimeur du Roi pour l'Ontario, 1997. Reproduit avec autorisation", "parentLayer": { "id": 17, "name": "OGS-EDS014 (1997) : Surficial Geology" }, "subLayers": [], "minScale": 0, "maxScale": 0, "drawingInfo": { "renderer": { "type": "uniqueValue", "field1": "NUMBER_", "field2": null, "field3": null, "defaultSymbol": null, "defaultLabel": null, "uniqueValueInfos": [ { "symbol": { "type": "esriSFS", "style": "esriSFSSolid", "color": [ 239, 193, 202, 255 ], "outline": { "type": "esriSLS", "style": "esriSLSSolid", "color": [ 0, 0, 0, 0 ], "width": 0.1 } }, "value": "1", "label": "1: Bedrock: undifferentiated igneous and metamorphic rock, exposed at surface or covered by a discontinuous, thin layer of drift", "description": "" } ], "fieldDelimiter": "," }, "transparency": 50, "labelingInfo": null }, "defaultVisibility": true, "extent": { "xmin": -8499864.9185, "ymin": 5615488.756899998, "xmax": -8376410.8621, "ymax": 5705935.2579, "spatialReference": { "wkid": 102100, "latestWkid": 3857 } }, "hasAttachments": false, "htmlPopupType": "esriServerHTMLPopupTypeAsHTMLText", "displayField": "UNIT_NAME", "typeIdField": null, "subtypeFieldName": null, "subtypeField": null, "defaultSubtypeCode": null, "fields": [ { "name": "OBJECTID", "type": "esriFieldTypeOID", "alias": "OBJECTID", "domain": null }, { "name": "NUMBER_", "type": "esriFieldTypeDouble", "alias": "NUMBER_", "domain": null }, { "name": "AGE", "type": "esriFieldTypeString", "alias": "AGE", "length": 30, "domain": null }, { "name": "UNIT_NAME", "type": "esriFieldTypeString", "alias": "Deposit Type", "length": 40, "domain": null }, { "name": "LOBE", "type": "esriFieldTypeString", "alias": "LOBE", "length": 40, "domain": null }, { "name": "MATERIAL", "type": "esriFieldTypeString", "alias": "Material Descriptions", "length": 170, "domain": null }, { "name": "PROJECTID", "type": "esriFieldTypeString", "alias": "Project ID", "length": 50, "domain": null }, { "name": "REFERENCE", "type": "esriFieldTypeString", "alias": "Reference", "length": 500, "domain": null }, { "name": "REF_FR", "type": "esriFieldTypeString", "alias": "Référence", "length": 500, "domain": null }, { "name": "DISCLAIMER", "type": "esriFieldTypeString", "alias": "Disclaimer", "length": 500, "domain": null }, { "name": "AVERTIS", "type": "esriFieldTypeString", "alias": "Avertissement", "length": 500, "domain": null }, { "name": "COPYRIGHT", "type": "esriFieldTypeString", "alias": "Copyright", "length": 400, "domain": null }, { "name": "DDAUTEUR", "type": "esriFieldTypeString", "alias": "Droit d'Auteur", "length": 400, "domain": null }, { "name": "TYPEDEPOT", "type": "esriFieldTypeString", "alias": "Type de dépôts", "length": 50, "domain": null }, { "name": "AGE_FR", "type": "esriFieldTypeString", "alias": "AGE_FR", "length": 50, "domain": null }, { "name": "DESCMAT", "type": "esriFieldTypeString", "alias": "Descriptions des matériaux", "length": 500, "domain": null }, { "name": "PUBLINK", "type": "esriFieldTypeString", "alias": "Publication Link", "length": 200, "domain": null }, { "name": "LIENPUB", "type": "esriFieldTypeString", "alias": "Lien de publication", "length": 200, "domain": null }, { "name": "SHAPE", "type": "esriFieldTypeGeometry", "alias": "SHAPE", "domain": null }, { "name": "SHAPE_Length", "type": "esriFieldTypeDouble", "alias": "SHAPE_Length", "domain": null }, { "name": "SHAPE_Area", "type": "esriFieldTypeDouble", "alias": "SHAPE_Area", "domain": null } ], "geometryField": { "name": "SHAPE", "type": "esriFieldTypeGeometry", "alias": "SHAPE" }, "indexes": [ { "name": "FDO_OBJECTID", "fields": "OBJECTID", "isAscending": true, "isUnique": true, "description": "" }, { "name": "FDO_SHAPE", "fields": "SHAPE", "isAscending": true, "isUnique": false, "description": "" } ], "subtypes": [], "relationships": [], "canModifyLayer": true, "canScaleSymbols": false, "hasLabels": false, "capabilities": "Map,Query,Data", "maxRecordCount": 1000, "supportsStatistics": true, "supportsAdvancedQueries": true, "supportedQueryFormats": "JSON, geoJSON", "isDataVersioned": false, "ownershipBasedAccessControlForFeatures": {"allowOthersToQuery": true}, "useStandardizedQueries": true, "advancedQueryCapabilities": { "useStandardizedQueries": true, "supportsStatistics": true, "supportsHavingClause": true, "supportsCountDistinct": true, "supportsOrderBy": true, "supportsDistinct": true, "supportsPagination": true, "supportsTrueCurve": true, "supportsReturningQueryExtent": true, "supportsQueryWithDistance": true, "supportsSqlExpression": true }, "supportsDatumTransformation": true, "supportsCoordinatesQuantization": true }