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  2. Trap rock - Wikipedia

    en.wikipedia.org/wiki/Trap_rock

    Trap is also used to refer to flood (plateau) basalts, such as the Deccan Traps and Siberian Traps. [2] The erosion of trap rock created by the stacking of successive lava flows often creates a distinct stairstep landscape from which the term trap was derived from the Swedish word trappa, which means "stairs". [1] The slow cooling of magma ...

  3. Geology of Ontario - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Ontario

    The geology of Ontario is the study of rock formations in the most populated province in Canada- it is home to some of the oldest rock on Earth. The geology in Ontario consists of ancient Precambrian igneous and metamorphic rock which sits under younger, sedimentary rocks and soils. Around 61% of Ontario is covered by the Canadian Shield. The ...

  4. Traprock - Wikipedia

    en.wikipedia.org/wiki/Traprock

    Traprock or trap rock may refer to: Trap rock, form of igneous rock exhibiting polygonal vertical fractures; Traprock Important Bird Area, Queensland, Australia; Trap Rock River, Michigan, USA; Walter E. Traprock, pseudonym of American architect and author George Shepard Chappell

  5. Pocumtuck Range - Wikipedia

    en.wikipedia.org/wiki/Pocumtuck_Range

    Purple=trap rock; brown and blue-grey=arkose sandstone; beige (righthand only)=conglomerate. Red arrows indicate extent of range. South Sugarloaf Mountain, arkose, is located just below the lower arrow. The Pocumtuck Range is composed of Sugarloaf arkose, a weather resistant sedimentary rock capped in places by a thin ridge of volcanic trap ...

  6. Ouimet Canyon - Wikipedia

    en.wikipedia.org/wiki/Ouimet_Canyon

    Ouimet Canyon is a large gorge in the municipality of Dorion, Thunder Bay District in northwestern Ontario, Canada, [1] about 60 kilometres (37 mi) northeast of the city of Thunder Bay. The gorge is 100 metres (330 ft) deep, 150 metres (490 ft) wide and 2,000 metres (2.0 km; 1.2 mi) long, protected as part of Ouimet Canyon Provincial Park .

  7. Onondaga Limestone - Wikipedia

    en.wikipedia.org/wiki/Onondaga_Limestone

    Location of the Onondaga limestone outcrop in New York State, USA and Ontario, Canada The Onondaga Limestone is a group of hard limestones and dolomites of Devonian age that forms geographic features in some areas in which it outcrops ; in others, especially its Southern Ontario portion, the formation can be less prominent as a local surface ...

  8. Sudbury Basin - Wikipedia

    en.wikipedia.org/wiki/Sudbury_Basin

    Onaping Fallback Breccia, polished slab, 15 by 23 cm (6 by 9 in) The Sudbury basin formed as a result of an impact into the Nuna supercontinent from a large impactor body approximately 10–15 km (6.2–9.3 mi) in diameter that occurred 1.849 billion years ago [2] in the Paleoproterozoic era.

  9. Petroglyphs Provincial Park - Wikipedia

    en.wikipedia.org/wiki/Petroglyphs_Provincial_Park

    The rock site itself is a sacred place. And today is a place of pilgrimage for local Anishinaabe people. The deep crevices in the rock are believed to lead to the spirit world, as there is an underground trickle of water that runs beneath the rock which produces sounds interpreted by Indigenous people as those of the Spirits speaking to them.