To determine the geometric pattern of the supercontinent cycle, a new 'orthoversion' model is suggested that matches the geologic evidence better than the traditional 'introversion' and ...
Department of Geology and Geophysics, Yale University, New Haven, Connecticut 06520-8109, USA * E-mail: [email protected]; [email protected] ... the Rodinia supercontinent completed its assembly through a mega-dextral transpressional shearing along the Tarimian orogen. This scenario has noteworthy parallels to the history of …
Supercontinent Rodinia. The earth's geodynamic system periodically pushes almost all continents together to form a single landmass – a supercontinent. The best known supercontinent is Pangaea (or Pangea) …
The supercontinent cycle (termed Sc) is one of the strongest paradigms in plate tectonics proposed by Wegener 1 in 1912 and has since been corroborated by many studies 2,3,4,5.The cycle ...
Adapted from: C.R. Scotese, The University of Texas at Arlington. Earth of the present day is made up of six or seven continents and four or five oceans, depending on whom you ask.But this wasn't always the case. Through the course of geologic time, the continents "drift" about on tectonic plates—large parts of Earth's crust that float on a heated plastic …
In geology, uplift refers to the vertical movement of the Earth's crust that results in an increase in elevation or height of the land surface. Tectonic activity, erosion, and sedimentation are among the geologic processes …
Pangea, supercontinent that incorporated almost all of Earth's landmasses in early geologic time. Fully assembled by the Early Permian Epoch (some 299 million to about 273 million years ago), it began to break apart about 200 million years ago, eventually forming the modern continents and the Atlantic and Indian oceans.
Rodinia was a supercontinent that existed during the Neoproterozoic era, approximately 1.1 to 0.75 billion years ago. It is believed to have been one of the earliest supercontinents in Earth's history, preceding the more well-known supercontinent Pangaea. The formation, breakup, and reassembly of Rodinia had a profound impact on the planet's geology, …
How could the formation of a supercontinent do this? A paper in Geology, published in 2018, suggests that the reason for this unconformity is massive erosion from Rodinian mountain ranges that formed as large masses of granitic rock from the underlying craton were exhumed, or uplifted and then eroded, about 680 to 850 million years ago. …
The first recognized supercontinent, known as Rodinia, formed about 1.3 billion years ago during the Neoproterozoic Era. Rodinia encompassed most of the Earth's landmasses and existed for an estimated 200-250 million years before it began to …
The supercontinent cycle plays a major role in how ... Pangaea, Rodinia and Columbia (Fig. 1). It is, therefore, now appropriate to use the term supercon- ... Institute of Geology and Geophysics,
Researchers piecing together the past are now picturing a new supercontinent, due in 250 million years. ... a great land known as Rodinia. Go back even further, about 1.4 billion years or more ...
The standard model for the origin of the Transantarctic Mountains postulates that during the Neoproterozoic Era a supercontinent existed called Rodinia which included what later became the East Antarctic craton. This supercontinent split …
Other articles where supercontinent cycle is discussed: plate tectonics: Supercontinent cycle: Although the Wilson cycle provided the means for recognizing the formation and destruction of ancient oceans, it did not provide a mechanism to explain why this occurred. In the early 1980s a controversial concept known as the supercontinent cycle was …
Using information from inside the rocks on Earth's surface, we have reconstructed the plate tectonics of the planet over the last 1.8 billion years. It is the first time Earth's geological record has been used like this, looking so far back in time. This has …
The supercontinent cycle of continental assembly and breakup has been linked to global-scale orogenesis, mantle convection patterns, and the evolution of climate, the environment, and life (Nance et al., 2014).Three supercontinents are proposed to have formed since 2 Ga: Pangea, Rodinia, and Columbia (Evans, 2013).Today, Earth is in between …
Paleomagnetism []—the study of the permanent magnetism in rocks, which provides the latitude and rotation for a continent—has been used to reconstruct the timing of the growth and dispersal of Rodinia.Early paleomagnetic studies were broadly supportive of the existence of a Rodinia supercontinent (6–8).But the quality of the data was …
Abstract New U‐Pb ages for detrital and igneous zircons constrain the depositional age and sedimentary provenance of the Beardmore Group, a siliciclastic succession that records transformation of the East Antarctic margin during Rodinia breakup and subsequent Gondwana amalgamation. We divide rocks previously mapped as the Beardmore Group …
During the Neoproterozoic, a supercontinent commonly referred to as Rodinia, supposedly formed at ca. 1100 Ma and broke apart at around 800–700 Ma. …
The challenges to reconstructing the history of Rodinia include inadequate high-quality geological, geochronological and palaeomagnetic data, multiple possible interpretations for each data set, and uncertainties in fundamental assumptions such as the application of modern-style plate tectonics to late-Precambrian time and that the …
There is a broad agreement that the amalgamation of Meso- to Neoproterozoic Rodinia was completed by the global-scale Grenvillian Orogeny or its age-equivalent collisional events at ∼1.0 Ga (Dalziel et al., 2000).However, in the current configuration of Rodinia (Fig. 1), most continental blocks welded by Grenville-aged …
Three principal configurations have been proposed for the position of the Yangtze Block in the Rodinia supercontinent. In the first, the Yangtze Block lies within assembled Rodinia, forming a link ...
Reference zircon AS-57 (1099 Ma) was analyzed after every six to seven. unknown grains. Ages were calculated with either ... Journal of Geology RODINIA SUPERCONTINENT BREAKUP 4 0 5. Grindley, G. W ...
The subsequent subduction–collision-generated granitoids can be used to infer the assembly of the Rodinia supercontinent (Yu et al., 2019). Stage 1 granitoids (957–844 Ma) within the EB show consistent geochemical features, characterized by enrichments in LREEs and LILEs and depletions in HFSEs.
The principal results of project 440 "Assembly and Breakup of Rodinia" of the International Geological Correlation Programme (IGCP) are reviewed in this work. A map of that supercontinent compiled using geological and paleomagnetic data describes global paleogeography 900 Ma ago. The assembly of Rodinia, which comprised most of …
Rodinia is a supercontinent believed to have existed in early Neoproterozoic time, consisting of Laurentia at its center surrounded by approximately 6-8 other cratons. Its …
In our preferred Rodinia model, the assembly process features the accretion or collision of continental blocks around the margin of Laurentia. Like the supercontinent …
DOI: 10.1016/j.precamres.2024.107432 Corpus ID: 270211449; A latest Mesoproterozoic arc–back-arc system in the southwestern Yangtze Block, South China: Implications for paleogeographic configuration of the Rodinia supercontinent
The configurations of the supercontinents of Gondwana and Pangea are relatively well constrained (Veevers, 2004), whereas those of older supercontinents are debated; competing models have been proposed (e.g., Li et al., 2008; Zhang et al., 2012; Zhao et al., 2002).This is particularly the case with the end-Mesoproterozoic …
An older supercontinent called Rodinia formed about 1 billion years ago and had North America at its center. The old parts of North America that were in the supercontinent are called Laurentia. The position of Laurentia is key to understanding where Rodinia was and how different continents were connected in the supercontinent.
a specific grouping of continents in their proposal. Subsequently, the term "Rodinia" has been used by various authors for a wide range of different configurations. McMenamin and McMenamin (1990) define Rodinia as resulting from a "major, one-billion-year-old episode of continental collision and supercontinent formation," and the name is used in
