DBpedia – Linked Data Fragments

Matches in DBpedia 2015-10 for { ?s ?p "Big Rock (also known as either Okotoks Erratic or, by the Blackfoot Indians, as Okotok) is a 16,500-tonne (18,200-ton) boulder that is about the size of a two-story house and lies on the otherwise flat, relatively featureless, surface of the Canadian Prairies in Alberta. It is part of the 580 miles (930 km) long Foothills Erratics Train of typically angular boulders of distinctive quartzite and pebbly quartzite.This massive angular boulder, which is broken into two main pieces, measures about 135 feet (41 m) by 60 feet (18 m) and is 30 feet (9.1 m) high. It consists of thick-bedded, micaceous, feldspathic quartzite that is light grey, pink, to purplish. Besides having been extensively fractured by frost action, it is unweathered. Big Rock lies about 5 miles (8.0 km) west of the town of Okotoks, Alberta, Canada 11 miles (18 km) south of Calgary) in the SE. 1/4 of Sec. 21, Township 20, Range 1, West 5th Meridian.Big Rock is a glacial erratic that is part of a 580 miles (930 km) long, narrow (0.62 miles (1.00 km) 13.7 miles (22.0 km) wide), linear scatter of thousands of distinctive quartzite and pebbly quartzite glacial erratics between 1 foot (0.30 m) and 135 feet (41 m) in length. This linear scatter of distinctive quartzite glacial erratics is known as the Foothills Erratics Train. The Foothills Erratics Train extends along the eastern flanks of the Rocky Mountains of Alberta and northern Montana to the International Border. The boulders and smaller gravel, which comprises the Foothills Erratics Train, consist of Lower Cambrian shallow marine quartzite and conglomeratic quarzite, which occurs only within the Gog Group and is found in the Athabasca River Valley of central western Alberta. Big Rock is the largest erratic within the Foothills Erratics Train. Lying on prairie to the east of the Rocky Mountains and like all the larger erratics, it is visible for a considerable distance across the prairie and likely served as a prominent landmark for Indigenous people.Although sometimes claimed to be the largest glacial erratic in the world, Big Rock is not. For example, one large glacial erratic in Germany measures 2 miles (3.2 km) by 4 miles (6.4 km) in dimensions and is 30 feet (9.1 m) thick. Near Cooking Lake, Alberta, one of several large glacial erratics, which is called the Cooking Lake (Number 6) megablock, covers an area of at least 4 sq mi (10 km2), has a length of 2.5 miles (4.0 km) and is about 33 feet (10 m) thick. Pollen studies indicate that the Lower Cretaceous sedimentary strata that comprise this glacial erratic were transported a minimum distance of about 160 miles (260 km)."@en }

• Big_Rock_(glacial_erratic) abstract "Big Rock (also known as either Okotoks Erratic or, by the Blackfoot Indians, as Okotok) is a 16,500-tonne (18,200-ton) boulder that is about the size of a two-story house and lies on the otherwise flat, relatively featureless, surface of the Canadian Prairies in Alberta. It is part of the 580 miles (930 km) long Foothills Erratics Train of typically angular boulders of distinctive quartzite and pebbly quartzite.This massive angular boulder, which is broken into two main pieces, measures about 135 feet (41 m) by 60 feet (18 m) and is 30 feet (9.1 m) high. It consists of thick-bedded, micaceous, feldspathic quartzite that is light grey, pink, to purplish. Besides having been extensively fractured by frost action, it is unweathered. Big Rock lies about 5 miles (8.0 km) west of the town of Okotoks, Alberta, Canada 11 miles (18 km) south of Calgary) in the SE. 1/4 of Sec. 21, Township 20, Range 1, West 5th Meridian.Big Rock is a glacial erratic that is part of a 580 miles (930 km) long, narrow (0.62 miles (1.00 km) 13.7 miles (22.0 km) wide), linear scatter of thousands of distinctive quartzite and pebbly quartzite glacial erratics between 1 foot (0.30 m) and 135 feet (41 m) in length. This linear scatter of distinctive quartzite glacial erratics is known as the Foothills Erratics Train. The Foothills Erratics Train extends along the eastern flanks of the Rocky Mountains of Alberta and northern Montana to the International Border. The boulders and smaller gravel, which comprises the Foothills Erratics Train, consist of Lower Cambrian shallow marine quartzite and conglomeratic quarzite, which occurs only within the Gog Group and is found in the Athabasca River Valley of central western Alberta. Big Rock is the largest erratic within the Foothills Erratics Train. Lying on prairie to the east of the Rocky Mountains and like all the larger erratics, it is visible for a considerable distance across the prairie and likely served as a prominent landmark for Indigenous people.Although sometimes claimed to be the largest glacial erratic in the world, Big Rock is not. For example, one large glacial erratic in Germany measures 2 miles (3.2 km) by 4 miles (6.4 km) in dimensions and is 30 feet (9.1 m) thick. Near Cooking Lake, Alberta, one of several large glacial erratics, which is called the Cooking Lake (Number 6) megablock, covers an area of at least 4 sq mi (10 km2), has a length of 2.5 miles (4.0 km) and is about 33 feet (10 m) thick. Pollen studies indicate that the Lower Cretaceous sedimentary strata that comprise this glacial erratic were transported a minimum distance of about 160 miles (260 km).".