• The Precambrian ( /priˈkæmbri.ən, -ˈkeɪm-/ pree-KAM-bree-ən, -⁠KAYM-; or Pre-Cambrian, sometimes abbreviated pC, or Cryptozoic) is the earliest part of...
    33 KB (3,531 words) - 22:52, 12 September 2024
  • "Precambrian rabbits" or "fossil rabbits in the Precambrian" are reported to have been among responses given by the biologist J. B. S. Haldane when asked...
    15 KB (1,725 words) - 10:47, 9 July 2024
  • Precambrian is the third studio album by German post-metal band The Ocean, released on 5 November 2007 through Metal Blade Records. It features several...
    9 KB (750 words) - 06:55, 1 February 2024
  • Thumbnail for Canadian Shield
    the Laurentian Plateau, is a geologic shield, a large area of exposed Precambrian igneous and high-grade metamorphic rocks. It forms the North American...
    21 KB (2,256 words) - 14:02, 10 September 2024
  • Precambrian Research is a peer-reviewed scientific journal covering the geology of the Earth and its planetary neighbors. It is published by Elsevier...
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  • giant impacts that help to increase its overall size. c. 4,533 Ma – The Precambrian (to c. 539 Ma), now termed a "supereon" but formerly an era, is split...
    64 KB (7,669 words) - 16:04, 11 August 2024
  • Thumbnail for Shield (geology)
    A shield is a large area of exposed Precambrian crystalline igneous and high-grade metamorphic rocks that form tectonically stable areas. These rocks...
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  • the known Cambrian lagerstätten are rare and difficult to date, while Precambrian lagerstätten have yet to be studied in detail. The sparseness of the...
    134 KB (15,430 words) - 19:06, 17 August 2024
  • Thumbnail for Banded iron formation
    Banded iron formation (category Precambrian)
    for several hundred kilometers. Almost all of these formations are of Precambrian age and are thought to record the oxygenation of the Earth's oceans....
    67 KB (7,112 words) - 23:53, 3 September 2024
  • Hadean (redirect from Early Precambrian)
    rocks – Includes rocks over 4 billion years old from the Hadean Eon Precambrian – History of Earth 4600–539 million years ago Timeline of natural history...
    30 KB (3,228 words) - 03:53, 16 September 2024
  • and Blanco counties, Texas. It consists of an island-like exposure of Precambrian igneous and metamorphic rocks surrounded by outcrops of Paleozoic and...
    26 KB (3,263 words) - 11:12, 15 September 2024
  • Thumbnail for Geology of the Rocky Mountains
    before the mountains were raised by tectonic forces. The oldest rock is Precambrian Wyoming craton that forms the core of the North American continent. The...
    18 KB (2,187 words) - 02:51, 14 September 2024
  • Thumbnail for Supercontinent
    continents", which leaves room for interpretation and is easier to apply to Precambrian times. To separate supercontinents from other groupings, a limit has...
    32 KB (3,806 words) - 06:37, 4 May 2024
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    (2002). "The Significance of Iron-Formation in the Precambrian Stratigraphic Record". Precambrian Sedimentary Environments. pp. 33–66. doi:10.1002/9781444304312...
    85 KB (9,541 words) - 00:28, 7 September 2024
  • Thumbnail for Precambrian body plans
    Until the late 1950s, the Precambrian was not believed to have hosted multicellular organisms. However, with radiometric dating techniques, it has been...
    36 KB (4,539 words) - 02:53, 25 December 2023
  • Thumbnail for Rocky Mountains
    The oldest rock is Precambrian metamorphic rock that forms the core of the North American continent. There is also Precambrian sedimentary argillite...
    55 KB (5,485 words) - 13:11, 14 September 2024
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    however, was a "fixist" and, erroneously, explained the presence of Precambrian and Paleozoic metamorphic rocks on the New Siberian, Wrangel, and De...
    13 KB (1,321 words) - 16:03, 17 May 2024
  • Thumbnail for Paleoclimatology
    temperatures. The Precambrian took place between the time when Earth first formed 4.6 billion years (Ga) ago, and 542 million years ago. The Precambrian can be split...
    52 KB (6,004 words) - 12:41, 14 June 2024
  • Thumbnail for Proterozoic
    Proterozoic (category Precambrian geochronology)
    and followed by the Phanerozoic, and is the most recent part of the Precambrian "supereon". The Proterozoic is subdivided into three geologic eras (from...
    23 KB (2,379 words) - 18:30, 4 September 2024
  • Thumbnail for Bigfoot
    Bigfoot (/ˈbɪɡfʊt/), also commonly referred to as Sasquatch (/ˈsæskwætʃ, ˈsæskwɒtʃ/), is a large and hairy human-like mythical creature said to inhabit...
    194 KB (17,719 words) - 02:17, 17 September 2024
  • M. A. (1976). "New Records of Fossils in the Valdaian Group of the Precambrian on the Syuz'ma River" (PDF). Izvestiya Akademii Nauk SSR. Seriya Geologicheskaya...
    82 KB (4,938 words) - 03:48, 10 August 2024
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    Great Falls is on the fall line of the Potomac River, and its rocks date to the late Precambrian....
    299 KB (26,579 words) - 15:41, 17 September 2024
  • Thumbnail for Nastapoka arc
    Hudson Bay, Beals proposes that the Nastapoka arc is possibly part of a Precambrian extraterrestrial meteorite impact structure that is comparable in size...
    10 KB (1,230 words) - 19:03, 13 September 2024
  • Thumbnail for Continent
    North America South America Zealandia Due to lacking the presence of Precambrian cratonic rocks, Zealandia's status as a geological continent has been...
    90 KB (8,790 words) - 07:04, 13 September 2024
  • Thumbnail for Stromatolite
    branching types. Stromatolites occur widely in the fossil record of the Precambrian but are rare today. Very few Archean stromatolites contain fossilized...
    40 KB (3,939 words) - 03:54, 26 June 2024
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    from a single common ancestor that lived 650 million years ago in the Precambrian. 25 of these are novel core gene groups, found only in animals; of those...
    127 KB (11,347 words) - 05:23, 8 September 2024
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    bryophytes. However, fossils of organisms with a flattened thallus in Precambrian rocks suggest that multicellular freshwater eukaryotes existed over 1000...
    95 KB (8,057 words) - 06:07, 5 September 2024
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    Walker, J. C. (1 January 1987). "A constant daylength during the Precambrian era?". Precambrian Research. 37 (2): 95–105. Bibcode:1987PreR...37...95Z. CiteSeerX 10...
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  • Thumbnail for List of tectonic plates
    Block – Part of the Congo craton of central Africa (Zambia) Congo Craton – Precambrian craton that with four others makes up the modern continent of Africa...
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    has been extended to between 2.3 and 3.5 billion years. Most of these Precambrian fossils are microscopic bacteria or microfossils. However, macroscopic...
    111 KB (11,445 words) - 22:28, 3 September 2024