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Marinoan glaciation

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1542: 389: 408: 454:-rich layers in the top 1 km (0.62 mi) of the 7 km (4.3 mi) Neoproterozoic strata of the northeastern Svalbard archipelago represent the first and final phases of the Marinoan glaciation. In Uruguay, evidence of the Marinoan glaciation is known from dropstones, diamictites, rhythmites, clast layers, and varve-like deposits. 356:. There were three (or possibly four) significant ice ages during the late Neoproterozoic. These periods of nearly complete glaciation of Earth are often referred to as "Snowball Earth", where it is hypothesized that at times the planet was covered by ice 1–2 km (0.62–1.24 mi) thick. Of these glaciations, the 379:
The melting of the Snowball Earth is associated with greenhouse warming due to the accumulation of high levels of carbon dioxide in the atmosphere. Deglaciation likely started in the mid-latitudes, as in the tropics, the intense hydrological cycle replenished snow rapidly. As the mid-latitudes became
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The term Marinoan glaciation was later applied globally to any glaciogenic formations assumed (directly or indirectly) to correlate with Mawson's original Elatina glaciation in South Australia. Recently, there has been a move to return to the term Elatina glaciation in South Australia because of
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A recent estimate of the timing and duration of Proterozoic glacial periods. Note that great uncertainty surrounds the dating of pre-Gaskiers glaciations. The status of the Kaigas is not clear; its dating is very tentative and many researchers do not recognise it as a glaciation. An earlier and
326:) where he found the evidence. However, the term Marinoan glaciation came into common usage because it was the glaciation that occurred during the Marinoan Epoch, as distinct from the earlier glaciation during the Sturtian Epoch (the time period of deposition of the older Sturtian Series). 879:
Wen, Bin; Evans, David A. D.; Li, Yong-Xiang; Wang, Zhengrong; Liu, Chao (2015-12-01). "Newly discovered Neoproterozoic diamictite and cap carbonate (DCC) couplet in Tarim Craton, NW China: Stratigraphy, geochemistry, and paleoenvironment".
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was the most significant, whereas the Marinoan was a shorter, but still worldwide glaciation. Other Cryogenian glaciations were probably small and not global as compared to the Marinoan or Sturtian glaciations.
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The Earth may not have been fully covered in ice, as some computer simulations show an extreme slowdown of the hydrological cycle that inhibited new glacial formation before the Earth was fully ice-covered.
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Williams, G.E.; Gostin, V.A.; McKirdy, D.M.; Preiss, W.V. (2008). "The Elatina glaciation, late Cryogenian (Marinoan Epoch), South Australia: Sedimentary facies and palaeoenvironments".
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Rooney, Alan D.; Strauss, Justin V.; Brandon, Alan D.; Macdonald, Francis A. (2015). "A Cryogenian chronology: Two long-lasting synchronous Neoproterozoic glaciations".
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in modern terminology. Mawson recognised a glacial episode within the Marinoan Epoch which he referred to as the Elatina glaciation after the 'Elatina Tillite' (now
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Ma, Xiaochen; Wang, Jiasheng; Wang, Zhou; Algeo, Thomas J.; Chen, Can; Cen, Yue; Yin, Qing-Zhu; Huang, Chang; Xu, Liyuan; Huang, Chao; Chen, Dahe (March 2023).
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uncertainties regarding global correlation and because an Ediacaran glacial episode (Gaskiers) also occurs within the wide-ranging Marinoan Epoch.
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Kennedy, M.; Mrofka, D.; von Der Borch, C. (2008). "Snowball Earth termination by destabilization of equatorial permafrost methane clathrate".
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Even though much evidence has been lost through geological changes, field investigations show evidence of the Marinoan glaciation in China,
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Pierrehumbert, R.T. (2004). "High levels of atmospheric carbon dioxide necessary for the termination of global glaciation".
318:. The corresponding time period, referred to as the Marinoan Epoch, spanned from the middle Cryogenian to the top of the 692:
Sun, Ruiyang; Shen, Jun; Grasby, Stephen E.; Zhang, Jiawei; Chen, Jianshu; Yang, Chuang; Yin, Runsheng (December 2022).
1324: 1290: 442:. Glacial deposits in South Australia are approximately the same age (about 630 Ma), confirmed by similar stable 653:"Geochronological constraints on Cryogenian ice ages: Zircon Usingle bondPb ages from a shelf section in South China" 1060:"Climate forcings and the initiation of low-latitude ice sheets during the Neoproterozoic Varanger glacial interval" 1064: 694:"CO2 buildup drove global warming, the Marinoan deglaciation, and the genesis of the Ediacaran cap carbonates" 1759: 1676: 400: 1154:
De Vrese, Philipp; Stacke, Tobias; Rugenstein, Jeremy Caves; Goodman, Jason; Brovkin, Victor (14 May 2021).
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Emerging evidence suggests that the Earth underwent a number of glaciations during the Neoproterozoic
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ice free, dust was blown from them into other regions, lowering albedo and speeding up deglaciation.
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extended and contracted in a series of rhythmic pulses, possibly reaching as far as the equator.
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Mawson, D. (1949). "A third occurrence of glaciation evidenced in the Adelaide System".
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Allen, Philip A.; Etienne, James L. (2008). "Sedimentary challenge to Snowball Earth".
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During the Marinoan glaciation, characteristic glacial deposits indicate that
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Geodynamic controls on glaciation in Earth history, in Earth's Glacial Record
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Pazos, Pablo J.; Sánchez-Bettucci, Leda; Tofalo, Ofelia R. (January 2003).
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rocks of the Adelaide area and encompassed all strata from the top of the
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Mawson, D.; Sprigg, R.C. (1950). "Subdivision of the Adelaide System".
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Eyles, Nicholas; Young, Grant (1994). Deynoux, M.; Miller, J.M.G.;
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Smith, A.G. (2009). "Neoproterozoic timescales and stratigraphy".
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According to Eyles and Young, the Marinoan is a second episode of
1831: 1796: 1706: 1514: 1333: 369: 263: 1199:"The Marinoan glaciation (Neoproterozoic) in northeast Svalbard" 1038:"Global Glaciation Snowballed Into Giant Change in Carbon Cycle" 1153: 447: 435: 128: 407: 254:. The end of the glaciation was caused by volcanic release of 612: 365: 298:. The term Marinoan Series was first used in a 1950 paper by 273: 1302: 748:
Shields, G. A. (2008). "Palaeoclimate: Marinoan meltdown".
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Period of worldwide glaciation during the Cryogenian period
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suffered one of the most severe ice ages in its history.
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Transactions of the Royal Society of South Australia
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Pocatello Formation, a 'Snowball Earth'—type deposit
1100: 1058:Chandler, Mark A.; Sohl, Linda E. (1 August 2000). 18: 1281:. Cambridge: Cambridge University Press. pp.  1275:; Eyles, N.; Fairchild, I.J.; Young, G.M. (eds.). 691: 651: 1758: 1094: 450:), and other unusual sedimentary structures. Two 1854: 608: 606: 518:Geological Society, London, Special Publications 179: 1807:Earth's surface entirely or nearly frozen over 989: 987: 649: 557: 555: 878: 1744: 1318: 1014: 603: 262:and may have been hastened by the release of 1197:Halverson GP, Maloof AC, Hoffman PF (2004). 1057: 984: 910: 834: 832: 552: 333: 1751: 1737: 1325: 1311: 1270: 857: 446:, mineral deposits (including sedimentary 1225: 1181: 1085: 851: 829: 274:Origin of name and history of terminology 509: 406: 387: 747: 438:minerals, which could be dated through 403:, South Australia. A$ 1 coin for scale. 1855: 1786:Tropical temperatures may reach poles 1777:Hypothetical runaway greenhouse state 1161:Communications Earth & Environment 213: 1732: 1306: 1264: 515: 426:archipelago and South Australia. In 178: 216:longer possible snowball phase, the 21: 13: 14: 1894: 1540: 1236:10.1111/j.1365-2117.2004.00234.x 1190: 1147: 1065:Journal of Geophysical Research 1051: 1030: 1008: 947: 941:10.1016/j.precamres.2007.12.001 904:10.1016/j.precamres.2015.10.006 872: 720:10.1016/j.precamres.2022.106891 672:10.1016/j.gloplacha.2023.104071 23:Neoproterozoic Snowball Periods 776: 741: 685: 643: 231:, sometimes also known as the 1: 1760:Greenhouse and Icehouse Earth 1677:Greenhouse and icehouse Earth 841:Australian Journal of Science 590:10.1016/S1342-937X(05)70644-4 502: 278:The name is derived from the 1332: 392:Elatina Fm diamictite below 235:, was a period of worldwide 7: 659:Global and Planetary Change 480: 383: 286:(Adelaide Rift Complex) in 214: 125: 10: 1899: 1374:Penultimate Glacial Period 1183:10.1038/s43247-021-00160-4 1040:. ScienceDaily. 2010-05-02 997:. ScienceDaily. 2004-04-22 337: 1801: 1795:Global climate during an 1789: 1780: 1771: 1766: 1715: 1664: 1645: 1626: 1599: 1574: 1549: 1538: 1509: 1354: 1340: 334:Cryogenian Snowball Earth 31:−1000 — 28: 1565:Late Paleozoic icehouse 169:(millions of years ago) 121:−550 — 111:−600 — 101:−650 — 91:−700 — 81:−750 — 71:−800 — 61:−850 — 51:−900 — 41:−950 — 1719:Timeline of glaciation 1586:(579.88 to 579.63 Mya) 1015:Dave Lawrence (2003). 419: 404: 290:and is taken from the 1682:Great Oxidation Event 492:Adelaide Rift Complex 410: 391: 338:Further information: 1567:(360 Mya to 260 Mya) 1561:(460 Mya to 430 Mya) 1383:Last Glacial Maximum 1087:10.1029/2000JD900221 1072:(D16): 20737–20756. 920:Precambrian Research 883:Precambrian Research 699:Precambrian Research 467:Adelaide Geosyncline 461:glaciation (680–690 284:Adelaide Geosyncline 220:, is not shown here. 1702:Milankovitch cycles 1379:Last Glacial Period 1218:2004BasR...16..297H 1174:2021ComEE...2...91D 1125:10.1038/nature02640 1117:2004Natur.429..646P 1078:2000JGR...10520737C 970:2008NatGe...1..817A 933:2008PreR..163..307W 896:2015PreR..271..278W 807:10.1038/nature06961 799:2008Natur.453..642K 762:2008NatGe...1..351S 712:2022PreR..38306891S 629:2015Geo....43..459R 582:2003GondR...6...65P 530:2009GSLSP.326...27S 497:Huronian glaciation 487:Sturtian glaciation 465:) occurring in the 358:Sturtian glaciation 314:to the base of the 282:terminology of the 258:and dissolution of 233:Varanger glaciation 229:Marinoan glaciation 218:Huronian glaciation 1615:(717 to 660 Mya); 1592:(547 to 541.5 Mya) 420: 405: 401:Flinders Ranges NP 312:Brighton Limestone 1878:Extinction events 1850: 1849: 1845: 1844: 1726: 1725: 1657:(2.9 to 2.78 Gya) 1536: 1535: 957:Nature Geoscience 750:Nature Geoscience 569:Gondwana Research 324:Elatina Formation 306:to subdivide the 225: 224: 209: 208: 170: 1890: 1883:1950s neologisms 1782:Greenhouse Earth 1769: 1768: 1753: 1746: 1739: 1730: 1729: 1638:(2.4 to 2.1 Gya) 1628:Paleoproterozoic 1619:(650 to 635 Mya) 1544: 1352: 1351: 1327: 1320: 1313: 1304: 1303: 1297: 1296: 1268: 1262: 1261: 1259: 1258: 1252: 1246:. 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Index

Tonian
Cryogenian
Ediacaran
Sturtian
Gaskiers
Neoproterozoic
Huronian glaciation
glaciation
Ma
Cryogenian
period
Snowball Earth
carbon dioxide
gas hydrates
methane
permafrost
stratigraphic
Adelaide Geosyncline
South Australia
Adelaide
Marino
Douglas Mawson
Reg Sprigg
Neoproterozoic
Brighton Limestone
Cambrian
Ediacaran
Elatina Formation
Cryogenian
Snowball Earth

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