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Gondwana (/ ɡ ɒ n d ˈ w ɑː n ə /) [1] was a large landmass, sometimes referred to as a supercontinent.The remnants of Gondwana make up around two-thirds of today's continental area, including South America, Africa, Antarctica, Australia, Zealandia, Arabia, and the Indian subcontinent.
The Moroccan Anti-Atlas range in West Gondwana was, in contrast, characterised by evaporites, evidence of desiccation, and had thrombolites. Avalonia and Gondwana must therefore have been located far from each other during this period. The two did, however, share a geological history from later in the early Cambrian until the mid-Orodovician. [8]
The geological fault zone resulting from the continental collision is known as the Iapetus Suture, named after the ocean it replaced. The closure of Iapetus involved a complex and protracted collisional history of numerous continental fragments , volcanic arcs and back-arc basins that were accreted to Laurentia and Avalonia between the Early ...
In the Neoproterozoic most of the Earth's landmasses were united in the Rodinia supercontinent.The majority of its bulk consisted of the landmass of Gondwana. [Note 1] Near the end of the Neoproterozoic, during the breakup of this supercontinent, Laurentia [Note 2] and Baltica [Note 3] rifted from the western (Amazonian craton) and northern (African) margins of Gondwana respectively.
The South Polar region of the Cretaceous comprised the continent of East Gondwana–modern day Australia, Zealandia, and Antarctica–a product of the break-up of Gondwana in the Cretaceous Period. The southern region, during this time, was much warmer than it is today, ranging from perhaps 4–8 °C (39–46 °F) in the latest Cretaceous ...
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Here’s everything you need to know about riding rail bikes through the historic Gold Country region. ... Rhodes said he used to run Sutter Gold Mine Tours that would specialize in Gold Country ...
After Gondwana broke up there seemed to be NW-SE extension which affected the graben structure found in the Prince Charles Mountains (PCM) and the diversity found around the Moho. [3] [10] There is a general consensus that the Napier Complex could be a nucleus during the amalgamation of East-West Gondwanaland. The Rayner Complex is thought to ...
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