"glacial till" meaning in English

{
  "forms": [
    {
      "form": "glacial tills",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "glacial till (plural glacial tills)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Geology",
          "orig": "en:Geology",
          "parents": [
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2016 June 9, Alistair Steele, “Ottawa sinkhole struck in unstable 'rock valley' flagged by engineers”, in CBC News",
          "text": "The updated geotechnical data report submitted by Golder Associates to Capital Transit Partners, and then presented to the city, describes the valley as a natural trench in the bedrock filled with between 15 and 37 metres of loose fill, silty clay and \"glacial till,\" or broken, weathered rock.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "an unstructured geological deposit composed of boulders, clay, gravel, sand, and silt that is transported by glacial drift."
      ],
      "id": "en-glacial_till-en-noun-2e3qNNuB",
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "unstructured",
          "unstructured"
        ],
        [
          "geological",
          "geological"
        ],
        [
          "deposit",
          "deposit"
        ],
        [
          "composed",
          "composed"
        ],
        [
          "boulders",
          "boulders"
        ],
        [
          "clay",
          "clay"
        ],
        [
          "gravel",
          "gravel"
        ],
        [
          "sand",
          "sand"
        ],
        [
          "silt",
          "silt"
        ],
        [
          "transported",
          "transported"
        ],
        [
          "glacial drift",
          "glacial drift"
        ]
      ],
      "raw_glosses": [
        "(geology) an unstructured geological deposit composed of boulders, clay, gravel, sand, and silt that is transported by glacial drift."
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    }
  ],
  "word": "glacial till"
}

{
  "forms": [
    {
      "form": "glacial tills",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "glacial till (plural glacial tills)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "en:Geology"
      ],
      "examples": [
        {
          "ref": "2016 June 9, Alistair Steele, “Ottawa sinkhole struck in unstable 'rock valley' flagged by engineers”, in CBC News",
          "text": "The updated geotechnical data report submitted by Golder Associates to Capital Transit Partners, and then presented to the city, describes the valley as a natural trench in the bedrock filled with between 15 and 37 metres of loose fill, silty clay and \"glacial till,\" or broken, weathered rock.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "an unstructured geological deposit composed of boulders, clay, gravel, sand, and silt that is transported by glacial drift."
      ],
      "links": [
        [
          "geology",
          "geology"
        ],
        [
          "unstructured",
          "unstructured"
        ],
        [
          "geological",
          "geological"
        ],
        [
          "deposit",
          "deposit"
        ],
        [
          "composed",
          "composed"
        ],
        [
          "boulders",
          "boulders"
        ],
        [
          "clay",
          "clay"
        ],
        [
          "gravel",
          "gravel"
        ],
        [
          "sand",
          "sand"
        ],
        [
          "silt",
          "silt"
        ],
        [
          "transported",
          "transported"
        ],
        [
          "glacial drift",
          "glacial drift"
        ]
      ],
      "raw_glosses": [
        "(geology) an unstructured geological deposit composed of boulders, clay, gravel, sand, and silt that is transported by glacial drift."
      ],
      "topics": [
        "geography",
        "geology",
        "natural-sciences"
      ]
    }
  ],
  "word": "glacial till"
}