The Ross orogeny was a mountain building event in Antarctica in the early Paleozoic. The ancestral (also termed proto-) Trans-Antarctic Mountains were uplifted earlier by the Beardmore orogeny but had eroded as a broad epicratonic sea flooded much of Antarctica in the Cambrian. Shallow water sedimentary rocks, platform carbonates and deepwater turbidites from this period are found in the mountain range. The Ross orogeny was one of the most extensive orogenic events in Antarctica, causing widespread plutonism and metamorphism. Bimodal magmatism and extension mark the beginnings of the orogeny, while during the later phase sedimentary rocks at the continental margin were deformed, metamorphosed and intruded with granite batholiths. Interpretations of rock forms in Antarctica during the 1980s suggested a westward-dipping subduction zone may have formed along the paleo-Pacific Ocean shoreline of East Antarctica. This is inferred from a large number of I-type and S-type granitoids which are similar to large circum-Pacific batholiths.[1]
During the Late Cambrian to Early Ordovician, 450-520 Ma, Cambrian sediments within the Transantarctic Mountains were uplifted, folded, metamorphosed, and intruded by granitoid batholiths. Evidence of this origin may be found in the Shackleton Range, the Pensacola Mountains, Thiel Mountains, Horlick Mountains, and the Queen Maud Mountains.[2][3]
^Anderson, John B. (1999). "Antarctic Marine Geology". Cambridge University Press. p. 32-33. ISBN 9780521593175.
^Laird, Malcolm (1991). Tingey, Robert (ed.). The Late Proterozoic-Middle Palaeozoic rocks of Antarctica, in The Geology of Antarctica. Oxford: Clarendon Press. pp. 97–99, 104, 108. ISBN 0198544677.
^Buggisch, Werner; Webers, Gerald; Repetski, John; Glenister, Linda (1992). Webers, Gerald; Craddock, Campbell; Splettstoesser, John (eds.). Cambrian conodonts from the Springer Peak and Minaret Formations, Ellsworth Mountains, West Antarctica, in Geology and Paleontology of the Ellsworth Mountains, West Antarctica. Boulder: Geological Society of America. p. 169. ISBN 0813711703.
The Rossorogeny was a mountain building event in Antarctica in the early Paleozoic. The ancestral (also termed proto-) Trans-Antarctic Mountains were...
(2000–1700 Ma) Late Ruker orogeny, also known as the Nimrod orogeny – (1000±150 Ma) Beardmore orogeny – (633–620 Ma) Rossorogeny – Paleozoic mountain building...
adakitic granitoids. This period of mountain building is referred to as the RossOrogeny. The Royal Society Range contains over 50 basaltic vents, ranging in...
chordates. Petermann Orogeny on the Australian continent tapers off (550–535 Ma). RossOrogeny in Antarctica. Delamerian Orogeny (c. 514–490 Ma) on Australian...
metasedimentary Skelton Group in the Late Cambrian-Early Ordovician during the Rossorogeny. The basement complex is overlain by the Jurassic Beacon Supergroup,...
Precambrian to lower Paleozoic in age, deformed in many places during the RossOrogeny in the Cambrian. These miogeosyncline metasedimentary rocks are partly...
This Late Precambrian event occurred between 660 and 580 Ma. Rossorogeny List of orogenies Geology of Antarctica Anderson, John B. (1999). "Antarctic Marine...
The Caledonian orogeny was a mountain-building cycle recorded in the northern parts of the British Isles, the Scandinavian Caledonides, Svalbard, eastern...
Land Geology of the Antarctic Peninsula Gondwanide orogeny List of volcanoes in Antarctica Rossorogeny SWEAT (hypothesis) Tectonic evolution of the Transantarctic...
The Antler orogeny was a tectonic event that began in the early Late Devonian with widespread effects continuing into the Mississippian and early Pennsylvanian...
Orogeny (/ɒˈrɒdʒəni/) is a mountain-building process that takes place at a convergent plate margin when plate motion compresses the margin. An orogenic...
orogenic events, including as the Rossorogeny in Antarctica, the Saldana orogeny in South Africa, and the Delamerian orogeny in Australia, took place along...
Bulletin 35, 105 - 112. Federico L., Capponi G. and CRISPINI L. - 2006- The Rossorogeny of the Transantarctic Mountains: a northern Victoria Land perspective...
Mountains in the mid-Cambrian, an event that has been ascribed to the Rossorogeny. It has recently been proposed that during middle to late Cambrian times...
texture. The Tyennan Orogeny corresponds with the first phase of the Delamerian Orogeny in South Australia and the RossOrogeny in North Victoria Land...
volcanic rocks of LaGorce and Wyatt formations were deposited prior to the Rossorogeny. 85°56′S 133°15′W / 85.933°S 133.250°W / -85.933; -133.250. A rock...
South Africa, and India, and along the Transantarctic Mountains (RossOrogeny). The Ross Orogen comprises a deformed sequence of Neoproterozoic to Cambrian...
the Earth or intruded at shallow depth during the active phase of the RossOrogeny. The bedrock underlying the northwest tip of Metavolcanic Mountain is...
deep as 35 kilometres (22 mi), but were probably uplifted before the Rossorogeny 500 million years ago. Additional sedimentation occurred after this,...
Formation. The formation postdates the Beardmore Orogeny of the Neoproterozoic, and was deformed by the RossOrogeny. The formation has provided fossils of trilobites...
Andrew (2006). "The Timing and Duration of the Delamerian Orogeny: Correlation with the Ross Orogen and Implications for Gondwana Assembly". The Journal...
major orogenies were involved. They include the Northern Superior Orogeny (2720 Ma), the Uchian Orogeny (2720–2700 Ma), the Central Superior Orogeny (2700...
sedimentary rocks involved in the Neoproterozoic to early Paleozoic Rossorogeny. Elsewhere in the Transantarctic Mountains, these metamorphic rocks and...
and metamorphosed in the RossOrogeny of the early Paleozoic. The area was uplifted and eroded into a peneplain after the Ross Orogony, and was covered...
the orogeny is constrained by the emplacement of the Wernecke Breccias, which are not deformed and have been dated to 1.59 Ga. The Racklan Orogeny is characterised...
Variscan-Alleghanian-Ouachita orogeny. Today their remains stretch over 10,000 km from the Gulf of Mexico in the west to Turkey in the east. The orogeny was caused by...
Early Silurian Benambran Orogeny (also led to the formation of the Wagga-Omeo Zone). The Middle Devonian Tabberabberan Orogeny affected the entire LFB...
Thrust Belt represents the forefront of the ancient Silurian-era Caledonian orogeny. Venues for music and the performing arts in Ullapool include the Macphail...
supercontinent that formed at the end of the Precambrian during the Pan-African orogeny (650–500 Ma), during the Cryogenian period and broke apart 560 Ma with...
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